diff options
Diffstat (limited to 'arch/arm64/kernel')
77 files changed, 415 insertions, 805 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c index 803f0494dd3e..2804330c95dc 100644 --- a/arch/arm64/kernel/acpi.c +++ b/arch/arm64/kernel/acpi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARM64 Specific Low-Level ACPI Boot Support * @@ -7,10 +8,6 @@ * Author: Hanjun Guo <hanjun.guo@linaro.org> * Author: Tomasz Nowicki <tomasz.nowicki@linaro.org> * Author: Naresh Bhat <naresh.bhat@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) "ACPI: " fmt diff --git a/arch/arm64/kernel/acpi_parking_protocol.c b/arch/arm64/kernel/acpi_parking_protocol.c index 98a20e58758b..e7c941d8340d 100644 --- a/arch/arm64/kernel/acpi_parking_protocol.c +++ b/arch/arm64/kernel/acpi_parking_protocol.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARM64 ACPI Parking Protocol implementation * * Authors: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> * Mark Salter <msalter@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> #include <linux/mm.h> diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c index a9b467763153..d1757ef1b1e7 100644 --- a/arch/arm64/kernel/alternative.c +++ b/arch/arm64/kernel/alternative.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * alternative runtime patching * inspired by the x86 version * * Copyright (C) 2014 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #define pr_fmt(fmt) "alternatives: " fmt diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index e52e7280884a..2ec09debc2bb 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014 ARM Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/cpu.h> diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index e10e2a5d9ddc..02f08768c298 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/asm-offsets.c * * Copyright (C) 1995-2003 Russell King * 2001-2002 Keith Owens * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/arm_sdei.h> @@ -125,9 +114,16 @@ int main(void) DEFINE(VCPU_CONTEXT, offsetof(struct kvm_vcpu, arch.ctxt)); DEFINE(VCPU_FAULT_DISR, offsetof(struct kvm_vcpu, arch.fault.disr_el1)); DEFINE(VCPU_WORKAROUND_FLAGS, offsetof(struct kvm_vcpu, arch.workaround_flags)); + DEFINE(VCPU_HCR_EL2, offsetof(struct kvm_vcpu, arch.hcr_el2)); DEFINE(CPU_GP_REGS, offsetof(struct kvm_cpu_context, gp_regs)); + DEFINE(CPU_APIAKEYLO_EL1, offsetof(struct kvm_cpu_context, sys_regs[APIAKEYLO_EL1])); + DEFINE(CPU_APIBKEYLO_EL1, offsetof(struct kvm_cpu_context, sys_regs[APIBKEYLO_EL1])); + DEFINE(CPU_APDAKEYLO_EL1, offsetof(struct kvm_cpu_context, sys_regs[APDAKEYLO_EL1])); + DEFINE(CPU_APDBKEYLO_EL1, offsetof(struct kvm_cpu_context, sys_regs[APDBKEYLO_EL1])); + DEFINE(CPU_APGAKEYLO_EL1, offsetof(struct kvm_cpu_context, sys_regs[APGAKEYLO_EL1])); DEFINE(CPU_USER_PT_REGS, offsetof(struct kvm_regs, regs)); DEFINE(HOST_CONTEXT_VCPU, offsetof(struct kvm_cpu_context, __hyp_running_vcpu)); + DEFINE(HOST_DATA_CONTEXT, offsetof(struct kvm_host_data, host_ctxt)); #endif #ifdef CONFIG_CPU_PM DEFINE(CPU_CTX_SP, offsetof(struct cpu_suspend_ctx, sp)); diff --git a/arch/arm64/kernel/cacheinfo.c b/arch/arm64/kernel/cacheinfo.c index 0bf0a835122f..880d79904d36 100644 --- a/arch/arm64/kernel/cacheinfo.c +++ b/arch/arm64/kernel/cacheinfo.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARM64 cacheinfo support * * Copyright (C) 2015 ARM Ltd. * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index a2be30275a73..6ea337d464c4 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * CPU reset routines * * Copyright (C) 2001 Deep Blue Solutions Ltd. * Copyright (C) 2012 ARM Ltd. * Copyright (C) 2015 Huawei Futurewei Technologies. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/cpu-reset.h b/arch/arm64/kernel/cpu-reset.h index fad90e4935fb..ed50e9587ad8 100644 --- a/arch/arm64/kernel/cpu-reset.h +++ b/arch/arm64/kernel/cpu-reset.h @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * CPU reset routines * * Copyright (C) 2015 Huawei Futurewei Technologies. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef _ARM64_CPU_RESET_H diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index e88d4e7bdfc7..ca11ff7bf55e 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Contains CPU specific errata definitions * * Copyright (C) 2014 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/arm-smccc.h> @@ -502,6 +491,22 @@ static const struct midr_range arm64_ssb_cpus[] = { {}, }; +#ifdef CONFIG_ARM64_ERRATUM_1463225 +DEFINE_PER_CPU(int, __in_cortex_a76_erratum_1463225_wa); + +static bool +has_cortex_a76_erratum_1463225(const struct arm64_cpu_capabilities *entry, + int scope) +{ + u32 midr = read_cpuid_id(); + /* Cortex-A76 r0p0 - r3p1 */ + struct midr_range range = MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 3, 1); + + WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); + return is_midr_in_range(midr, &range) && is_kernel_in_hyp_mode(); +} +#endif + static void __maybe_unused cpu_enable_cache_maint_trap(const struct arm64_cpu_capabilities *__unused) { @@ -682,12 +687,16 @@ static const struct midr_range workaround_clean_cache[] = { }; #endif -#ifdef CONFIG_ARM64_ERRATUM_1188873 -static const struct midr_range erratum_1188873_list[] = { - /* Cortex-A76 r0p0 to r2p0 */ - MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 2, 0), - /* Neoverse-N1 r0p0 to r2p0 */ - MIDR_RANGE(MIDR_NEOVERSE_N1, 0, 0, 2, 0), +#ifdef CONFIG_ARM64_ERRATUM_1418040 +/* + * - 1188873 affects r0p0 to r2p0 + * - 1418040 affects r0p0 to r3p1 + */ +static const struct midr_range erratum_1418040_list[] = { + /* Cortex-A76 r0p0 to r3p1 */ + MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 3, 1), + /* Neoverse-N1 r0p0 to r3p1 */ + MIDR_RANGE(MIDR_NEOVERSE_N1, 0, 0, 3, 1), {}, }; #endif @@ -809,11 +818,11 @@ const struct arm64_cpu_capabilities arm64_errata[] = { .matches = has_ssbd_mitigation, .midr_range_list = arm64_ssb_cpus, }, -#ifdef CONFIG_ARM64_ERRATUM_1188873 +#ifdef CONFIG_ARM64_ERRATUM_1418040 { - .desc = "ARM erratum 1188873", - .capability = ARM64_WORKAROUND_1188873, - ERRATA_MIDR_RANGE_LIST(erratum_1188873_list), + .desc = "ARM erratum 1418040", + .capability = ARM64_WORKAROUND_1418040, + ERRATA_MIDR_RANGE_LIST(erratum_1418040_list), }, #endif #ifdef CONFIG_ARM64_ERRATUM_1165522 @@ -824,6 +833,14 @@ const struct arm64_cpu_capabilities arm64_errata[] = { ERRATA_MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 2, 0), }, #endif +#ifdef CONFIG_ARM64_ERRATUM_1463225 + { + .desc = "ARM erratum 1463225", + .capability = ARM64_WORKAROUND_1463225, + .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, + .matches = has_cortex_a76_erratum_1463225, + }, +#endif { } }; diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c index 00f8b8612b69..7e07072757af 100644 --- a/arch/arm64/kernel/cpu_ops.c +++ b/arch/arm64/kernel/cpu_ops.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * CPU kernel entry/exit control * * Copyright (C) 2013 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 2b807f129e60..aabdabf52fdb 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Contains CPU feature definitions * * Copyright (C) 2015 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #define pr_fmt(fmt) "CPU features: " fmt @@ -830,6 +819,7 @@ static u64 __read_sysreg_by_encoding(u32 sys_id) read_sysreg_case(SYS_ID_AA64PFR0_EL1); read_sysreg_case(SYS_ID_AA64PFR1_EL1); + read_sysreg_case(SYS_ID_AA64ZFR0_EL1); read_sysreg_case(SYS_ID_AA64DFR0_EL1); read_sysreg_case(SYS_ID_AA64DFR1_EL1); read_sysreg_case(SYS_ID_AA64MMFR0_EL1); @@ -1913,7 +1903,7 @@ static void verify_sve_features(void) unsigned int len = zcr & ZCR_ELx_LEN_MASK; if (len < safe_len || sve_verify_vq_map()) { - pr_crit("CPU%d: SVE: required vector length(s) missing\n", + pr_crit("CPU%d: SVE: vector length support mismatch\n", smp_processor_id()); cpu_die_early(); } diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c index f2d13810daa8..d1048173fd8a 100644 --- a/arch/arm64/kernel/cpuidle.c +++ b/arch/arm64/kernel/cpuidle.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARM64 CPU idle arch support * * Copyright (C) 2014 ARM Ltd. * Author: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index f6f7936be6e7..0593665fc7b4 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -1,18 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Record and handle CPU attributes. * * Copyright (C) 2014 ARM Ltd. - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <asm/arch_timer.h> #include <asm/cache.h> diff --git a/arch/arm64/kernel/crash_dump.c b/arch/arm64/kernel/crash_dump.c index 6b5037ed15b2..e6e284265f19 100644 --- a/arch/arm64/kernel/crash_dump.c +++ b/arch/arm64/kernel/crash_dump.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Routines for doing kexec-based kdump * * Copyright (C) 2017 Linaro Limited * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/crash_dump.h> diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c index 555b6bd2f3d6..f8719bd30850 100644 --- a/arch/arm64/kernel/debug-monitors.c +++ b/arch/arm64/kernel/debug-monitors.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARMv8 single-step debug support and mdscr context switching. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ diff --git a/arch/arm64/kernel/efi-entry.S b/arch/arm64/kernel/efi-entry.S index 6b9736c3fb56..304d5b02ca67 100644 --- a/arch/arm64/kernel/efi-entry.S +++ b/arch/arm64/kernel/efi-entry.S @@ -1,13 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * EFI entry point. * * Copyright (C) 2013, 2014 Red Hat, Inc. * Author: Mark Salter <msalter@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> #include <linux/init.h> diff --git a/arch/arm64/kernel/efi-header.S b/arch/arm64/kernel/efi-header.S index 613fc3000677..a7cfacce3e15 100644 --- a/arch/arm64/kernel/efi-header.S +++ b/arch/arm64/kernel/efi-header.S @@ -1,10 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2013 - 2017 Linaro, Ltd. * Copyright (C) 2013, 2014 Red Hat, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/pe.h> diff --git a/arch/arm64/kernel/efi-rt-wrapper.S b/arch/arm64/kernel/efi-rt-wrapper.S index 05235ebb336d..3fc71106cb2b 100644 --- a/arch/arm64/kernel/efi-rt-wrapper.S +++ b/arch/arm64/kernel/efi-rt-wrapper.S @@ -1,9 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2018 Linaro Ltd <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 4f9acb5fbe97..3c33d0dd8e0e 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Extensible Firmware Interface * * Based on Extensible Firmware Interface Specification version 2.4 * * Copyright (C) 2013, 2014 Linaro Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/efi.h> diff --git a/arch/arm64/kernel/entry-fpsimd.S b/arch/arm64/kernel/entry-fpsimd.S index 12d4958e6429..0f24eae8f3cc 100644 --- a/arch/arm64/kernel/entry-fpsimd.S +++ b/arch/arm64/kernel/entry-fpsimd.S @@ -1,20 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * FP/SIMD state saving and restoring * * Copyright (C) 2012 ARM Ltd. * Author: Catalin Marinas <catalin.marinas@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/entry-ftrace.S b/arch/arm64/kernel/entry-ftrace.S index 81b8eb5c4633..33d003d80121 100644 --- a/arch/arm64/kernel/entry-ftrace.S +++ b/arch/arm64/kernel/entry-ftrace.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm64/kernel/entry-ftrace.S * * Copyright (C) 2013 Linaro Limited * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index 1a7811b7e3c4..2df8d0a1d980 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -1,21 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Low-level exception handling code * * Copyright (C) 2012 ARM Ltd. * Authors: Catalin Marinas <catalin.marinas@arm.com> * Will Deacon <will.deacon@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/arm-smccc.h> @@ -336,8 +325,8 @@ alternative_if ARM64_WORKAROUND_845719 alternative_else_nop_endif #endif 3: -#ifdef CONFIG_ARM64_ERRATUM_1188873 -alternative_if_not ARM64_WORKAROUND_1188873 +#ifdef CONFIG_ARM64_ERRATUM_1418040 +alternative_if_not ARM64_WORKAROUND_1418040 b 4f alternative_else_nop_endif /* diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 735cf1f8b109..0cfcf5c237c5 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1,23 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * FP/SIMD context switching and fault handling * * Copyright (C) 2012 ARM Ltd. * Author: Catalin Marinas <catalin.marinas@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/bitmap.h> +#include <linux/bitops.h> #include <linux/bottom_half.h> #include <linux/bug.h> #include <linux/cache.h> @@ -38,6 +28,7 @@ #include <linux/slab.h> #include <linux/stddef.h> #include <linux/sysctl.h> +#include <linux/swab.h> #include <asm/esr.h> #include <asm/fpsimd.h> @@ -48,6 +39,7 @@ #include <asm/sigcontext.h> #include <asm/sysreg.h> #include <asm/traps.h> +#include <asm/virt.h> #define FPEXC_IOF (1 << 0) #define FPEXC_DZF (1 << 1) @@ -119,6 +111,8 @@ */ struct fpsimd_last_state_struct { struct user_fpsimd_state *st; + void *sve_state; + unsigned int sve_vl; }; static DEFINE_PER_CPU(struct fpsimd_last_state_struct, fpsimd_last_state); @@ -130,14 +124,23 @@ static int sve_default_vl = -1; /* Maximum supported vector length across all CPUs (initially poisoned) */ int __ro_after_init sve_max_vl = SVE_VL_MIN; -/* Set of available vector lengths, as vq_to_bit(vq): */ -static __ro_after_init DECLARE_BITMAP(sve_vq_map, SVE_VQ_MAX); +int __ro_after_init sve_max_virtualisable_vl = SVE_VL_MIN; + +/* + * Set of available vector lengths, + * where length vq encoded as bit __vq_to_bit(vq): + */ +__ro_after_init DECLARE_BITMAP(sve_vq_map, SVE_VQ_MAX); +/* Set of vector lengths present on at least one cpu: */ +static __ro_after_init DECLARE_BITMAP(sve_vq_partial_map, SVE_VQ_MAX); + static void __percpu *efi_sve_state; #else /* ! CONFIG_ARM64_SVE */ /* Dummy declaration for code that will be optimised out: */ extern __ro_after_init DECLARE_BITMAP(sve_vq_map, SVE_VQ_MAX); +extern __ro_after_init DECLARE_BITMAP(sve_vq_partial_map, SVE_VQ_MAX); extern void __percpu *efi_sve_state; #endif /* ! CONFIG_ARM64_SVE */ @@ -235,14 +238,15 @@ static void task_fpsimd_load(void) */ void fpsimd_save(void) { - struct user_fpsimd_state *st = __this_cpu_read(fpsimd_last_state.st); + struct fpsimd_last_state_struct const *last = + this_cpu_ptr(&fpsimd_last_state); /* set by fpsimd_bind_task_to_cpu() or fpsimd_bind_state_to_cpu() */ WARN_ON(!in_softirq() && !irqs_disabled()); if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) { if (system_supports_sve() && test_thread_flag(TIF_SVE)) { - if (WARN_ON(sve_get_vl() != current->thread.sve_vl)) { + if (WARN_ON(sve_get_vl() != last->sve_vl)) { /* * Can't save the user regs, so current would * re-enter user with corrupt state. @@ -252,32 +256,15 @@ void fpsimd_save(void) return; } - sve_save_state(sve_pffr(¤t->thread), &st->fpsr); + sve_save_state((char *)last->sve_state + + sve_ffr_offset(last->sve_vl), + &last->st->fpsr); } else - fpsimd_save_state(st); + fpsimd_save_state(last->st); } } /* - * Helpers to translate bit indices in sve_vq_map to VQ values (and - * vice versa). This allows find_next_bit() to be used to find the - * _maximum_ VQ not exceeding a certain value. - */ - -static unsigned int vq_to_bit(unsigned int vq) -{ - return SVE_VQ_MAX - vq; -} - -static unsigned int bit_to_vq(unsigned int bit) -{ - if (WARN_ON(bit >= SVE_VQ_MAX)) - bit = SVE_VQ_MAX - 1; - - return SVE_VQ_MAX - bit; -} - -/* * All vector length selection from userspace comes through here. * We're on a slow path, so some sanity-checks are included. * If things go wrong there's a bug somewhere, but try to fall back to a @@ -298,8 +285,8 @@ static unsigned int find_supported_vector_length(unsigned int vl) vl = max_vl; bit = find_next_bit(sve_vq_map, SVE_VQ_MAX, - vq_to_bit(sve_vq_from_vl(vl))); - return sve_vl_from_vq(bit_to_vq(bit)); + __vq_to_bit(sve_vq_from_vl(vl))); + return sve_vl_from_vq(__bit_to_vq(bit)); } #ifdef CONFIG_SYSCTL @@ -355,6 +342,23 @@ static int __init sve_sysctl_init(void) { return 0; } #define ZREG(sve_state, vq, n) ((char *)(sve_state) + \ (SVE_SIG_ZREG_OFFSET(vq, n) - SVE_SIG_REGS_OFFSET)) +#ifdef CONFIG_CPU_BIG_ENDIAN +static __uint128_t arm64_cpu_to_le128(__uint128_t x) +{ + u64 a = swab64(x); + u64 b = swab64(x >> 64); + + return ((__uint128_t)a << 64) | b; +} +#else +static __uint128_t arm64_cpu_to_le128(__uint128_t x) +{ + return x; +} +#endif + +#define arm64_le128_to_cpu(x) arm64_cpu_to_le128(x) + /* * Transfer the FPSIMD state in task->thread.uw.fpsimd_state to * task->thread.sve_state. @@ -372,14 +376,16 @@ static void fpsimd_to_sve(struct task_struct *task) void *sst = task->thread.sve_state; struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state; unsigned int i; + __uint128_t *p; if (!system_supports_sve()) return; vq = sve_vq_from_vl(task->thread.sve_vl); - for (i = 0; i < 32; ++i) - memcpy(ZREG(sst, vq, i), &fst->vregs[i], - sizeof(fst->vregs[i])); + for (i = 0; i < 32; ++i) { + p = (__uint128_t *)ZREG(sst, vq, i); + *p = arm64_cpu_to_le128(fst->vregs[i]); + } } /* @@ -398,14 +404,16 @@ static void sve_to_fpsimd(struct task_struct *task) void const *sst = task->thread.sve_state; struct user_fpsimd_state *fst = &task->thread.uw.fpsimd_state; unsigned int i; + __uint128_t const *p; if (!system_supports_sve()) return; vq = sve_vq_from_vl(task->thread.sve_vl); - for (i = 0; i < 32; ++i) - memcpy(&fst->vregs[i], ZREG(sst, vq, i), - sizeof(fst->vregs[i])); + for (i = 0; i < 32; ++i) { + p = (__uint128_t const *)ZREG(sst, vq, i); + fst->vregs[i] = arm64_le128_to_cpu(*p); + } } #ifdef CONFIG_ARM64_SVE @@ -494,6 +502,7 @@ void sve_sync_from_fpsimd_zeropad(struct task_struct *task) void *sst = task->thread.sve_state; struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state; unsigned int i; + __uint128_t *p; if (!test_tsk_thread_flag(task, TIF_SVE)) return; @@ -502,9 +511,10 @@ void sve_sync_from_fpsimd_zeropad(struct task_struct *task) memset(sst, 0, SVE_SIG_REGS_SIZE(vq)); - for (i = 0; i < 32; ++i) - memcpy(ZREG(sst, vq, i), &fst->vregs[i], - sizeof(fst->vregs[i])); + for (i = 0; i < 32; ++i) { + p = (__uint128_t *)ZREG(sst, vq, i); + *p = arm64_cpu_to_le128(fst->vregs[i]); + } } int sve_set_vector_length(struct task_struct *task, @@ -550,7 +560,6 @@ int sve_set_vector_length(struct task_struct *task, local_bh_disable(); fpsimd_save(); - set_thread_flag(TIF_FOREIGN_FPSTATE); } fpsimd_flush_task_state(task); @@ -624,12 +633,6 @@ int sve_get_current_vl(void) return sve_prctl_status(0); } -/* - * Bitmap for temporary storage of the per-CPU set of supported vector lengths - * during secondary boot. - */ -static DECLARE_BITMAP(sve_secondary_vq_map, SVE_VQ_MAX); - static void sve_probe_vqs(DECLARE_BITMAP(map, SVE_VQ_MAX)) { unsigned int vq, vl; @@ -644,40 +647,82 @@ static void sve_probe_vqs(DECLARE_BITMAP(map, SVE_VQ_MAX)) write_sysreg_s(zcr | (vq - 1), SYS_ZCR_EL1); /* self-syncing */ vl = sve_get_vl(); vq = sve_vq_from_vl(vl); /* skip intervening lengths */ - set_bit(vq_to_bit(vq), map); + set_bit(__vq_to_bit(vq), map); } } +/* + * Initialise the set of known supported VQs for the boot CPU. + * This is called during kernel boot, before secondary CPUs are brought up. + */ void __init sve_init_vq_map(void) { sve_probe_vqs(sve_vq_map); + bitmap_copy(sve_vq_partial_map, sve_vq_map, SVE_VQ_MAX); } /* * If we haven't committed to the set of supported VQs yet, filter out * those not supported by the current CPU. + * This function is called during the bring-up of early secondary CPUs only. */ void sve_update_vq_map(void) { - sve_probe_vqs(sve_secondary_vq_map); - bitmap_and(sve_vq_map, sve_vq_map, sve_secondary_vq_map, SVE_VQ_MAX); + DECLARE_BITMAP(tmp_map, SVE_VQ_MAX); + + sve_probe_vqs(tmp_map); + bitmap_and(sve_vq_map, sve_vq_map, tmp_map, SVE_VQ_MAX); + bitmap_or(sve_vq_partial_map, sve_vq_partial_map, tmp_map, SVE_VQ_MAX); } -/* Check whether the current CPU supports all VQs in the committed set */ +/* + * Check whether the current CPU supports all VQs in the committed set. + * This function is called during the bring-up of late secondary CPUs only. + */ int sve_verify_vq_map(void) { - int ret = 0; + DECLARE_BITMAP(tmp_map, SVE_VQ_MAX); + unsigned long b; - sve_probe_vqs(sve_secondary_vq_map); - bitmap_andnot(sve_secondary_vq_map, sve_vq_map, sve_secondary_vq_map, - SVE_VQ_MAX); - if (!bitmap_empty(sve_secondary_vq_map, SVE_VQ_MAX)) { + sve_probe_vqs(tmp_map); + + bitmap_complement(tmp_map, tmp_map, SVE_VQ_MAX); + if (bitmap_intersects(tmp_map, sve_vq_map, SVE_VQ_MAX)) { pr_warn("SVE: cpu%d: Required vector length(s) missing\n", smp_processor_id()); - ret = -EINVAL; + return -EINVAL; } - return ret; + if (!IS_ENABLED(CONFIG_KVM) || !is_hyp_mode_available()) + return 0; + + /* + * For KVM, it is necessary to ensure that this CPU doesn't + * support any vector length that guests may have probed as + * unsupported. + */ + + /* Recover the set of supported VQs: */ + bitmap_complement(tmp_map, tmp_map, SVE_VQ_MAX); + /* Find VQs supported that are not globally supported: */ + bitmap_andnot(tmp_map, tmp_map, sve_vq_map, SVE_VQ_MAX); + + /* Find the lowest such VQ, if any: */ + b = find_last_bit(tmp_map, SVE_VQ_MAX); + if (b >= SVE_VQ_MAX) + return 0; /* no mismatches */ + + /* + * Mismatches above sve_max_virtualisable_vl are fine, since + * no guest is allowed to configure ZCR_EL2.LEN to exceed this: + */ + if (sve_vl_from_vq(__bit_to_vq(b)) <= sve_max_virtualisable_vl) { + pr_warn("SVE: cpu%d: Unsupported vector length(s) present\n", + smp_processor_id()); + return -EINVAL; + } + + return 0; } static void __init sve_efi_setup(void) @@ -744,6 +789,8 @@ u64 read_zcr_features(void) void __init sve_setup(void) { u64 zcr; + DECLARE_BITMAP(tmp_map, SVE_VQ_MAX); + unsigned long b; if (!system_supports_sve()) return; @@ -753,8 +800,8 @@ void __init sve_setup(void) * so sve_vq_map must have at least SVE_VQ_MIN set. * If something went wrong, at least try to patch it up: */ - if (WARN_ON(!test_bit(vq_to_bit(SVE_VQ_MIN), sve_vq_map))) - set_bit(vq_to_bit(SVE_VQ_MIN), sve_vq_map); + if (WARN_ON(!test_bit(__vq_to_bit(SVE_VQ_MIN), sve_vq_map))) + set_bit(__vq_to_bit(SVE_VQ_MIN), sve_vq_map); zcr = read_sanitised_ftr_reg(SYS_ZCR_EL1); sve_max_vl = sve_vl_from_vq((zcr & ZCR_ELx_LEN_MASK) + 1); @@ -772,11 +819,31 @@ void __init sve_setup(void) */ sve_default_vl = find_supported_vector_length(64); + bitmap_andnot(tmp_map, sve_vq_partial_map, sve_vq_map, + SVE_VQ_MAX); + + b = find_last_bit(tmp_map, SVE_VQ_MAX); + if (b >= SVE_VQ_MAX) + /* No non-virtualisable VLs found */ + sve_max_virtualisable_vl = SVE_VQ_MAX; + else if (WARN_ON(b == SVE_VQ_MAX - 1)) + /* No virtualisable VLs? This is architecturally forbidden. */ + sve_max_virtualisable_vl = SVE_VQ_MIN; + else /* b + 1 < SVE_VQ_MAX */ + sve_max_virtualisable_vl = sve_vl_from_vq(__bit_to_vq(b + 1)); + + if (sve_max_virtualisable_vl > sve_max_vl) + sve_max_virtualisable_vl = sve_max_vl; + pr_info("SVE: maximum available vector length %u bytes per vector\n", sve_max_vl); pr_info("SVE: default vector length %u bytes per vector\n", sve_default_vl); + /* KVM decides whether to support mismatched systems. Just warn here: */ + if (sve_max_virtualisable_vl < sve_max_vl) + pr_warn("SVE: unvirtualisable vector lengths present\n"); + sve_efi_setup(); } @@ -816,12 +883,11 @@ asmlinkage void do_sve_acc(unsigned int esr, struct pt_regs *regs) local_bh_disable(); fpsimd_save(); - fpsimd_to_sve(current); /* Force ret_to_user to reload the registers: */ fpsimd_flush_task_state(current); - set_thread_flag(TIF_FOREIGN_FPSTATE); + fpsimd_to_sve(current); if (test_and_set_thread_flag(TIF_SVE)) WARN_ON(1); /* SVE access shouldn't have trapped */ @@ -894,9 +960,9 @@ void fpsimd_flush_thread(void) local_bh_disable(); + fpsimd_flush_task_state(current); memset(¤t->thread.uw.fpsimd_state, 0, sizeof(current->thread.uw.fpsimd_state)); - fpsimd_flush_task_state(current); if (system_supports_sve()) { clear_thread_flag(TIF_SVE); @@ -933,8 +999,6 @@ void fpsimd_flush_thread(void) current->thread.sve_vl_onexec = 0; } - set_thread_flag(TIF_FOREIGN_FPSTATE); - local_bh_enable(); } @@ -974,6 +1038,8 @@ void fpsimd_bind_task_to_cpu(void) this_cpu_ptr(&fpsimd_last_state); last->st = ¤t->thread.uw.fpsimd_state; + last->sve_state = current->thread.sve_state; + last->sve_vl = current->thread.sve_vl; current->thread.fpsimd_cpu = smp_processor_id(); if (system_supports_sve()) { @@ -987,7 +1053,8 @@ void fpsimd_bind_task_to_cpu(void) } } -void fpsimd_bind_state_to_cpu(struct user_fpsimd_state *st) +void fpsimd_bind_state_to_cpu(struct user_fpsimd_state *st, void *sve_state, + unsigned int sve_vl) { struct fpsimd_last_state_struct *last = this_cpu_ptr(&fpsimd_last_state); @@ -995,6 +1062,8 @@ void fpsimd_bind_state_to_cpu(struct user_fpsimd_state *st) WARN_ON(!in_softirq() && !irqs_disabled()); last->st = st; + last->sve_state = sve_state; + last->sve_vl = sve_vl; } /* @@ -1043,12 +1112,29 @@ void fpsimd_update_current_state(struct user_fpsimd_state const *state) /* * Invalidate live CPU copies of task t's FPSIMD state + * + * This function may be called with preemption enabled. The barrier() + * ensures that the assignment to fpsimd_cpu is visible to any + * preemption/softirq that could race with set_tsk_thread_flag(), so + * that TIF_FOREIGN_FPSTATE cannot be spuriously re-cleared. + * + * The final barrier ensures that TIF_FOREIGN_FPSTATE is seen set by any + * subsequent code. */ void fpsimd_flush_task_state(struct task_struct *t) { t->thread.fpsimd_cpu = NR_CPUS; + + barrier(); + set_tsk_thread_flag(t, TIF_FOREIGN_FPSTATE); + + barrier(); } +/* + * Invalidate any task's FPSIMD state that is present on this cpu. + * This function must be called with softirqs disabled. + */ void fpsimd_flush_cpu_state(void) { __this_cpu_write(fpsimd_last_state.st, NULL); diff --git a/arch/arm64/kernel/ftrace.c b/arch/arm64/kernel/ftrace.c index 65a51331088e..1285c7b2947f 100644 --- a/arch/arm64/kernel/ftrace.c +++ b/arch/arm64/kernel/ftrace.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/ftrace.c * * Copyright (C) 2013 Linaro Limited * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/ftrace.h> diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index fcae3f85c6cd..2cdacd1c141b 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Low-level CPU initialisation * Based on arch/arm/kernel/head.S @@ -6,18 +7,6 @@ * Copyright (C) 2003-2012 ARM Ltd. * Authors: Catalin Marinas <catalin.marinas@arm.com> * Will Deacon <will.deacon@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/hibernate-asm.S b/arch/arm64/kernel/hibernate-asm.S index fe36d85c60bd..2f4a2ce7264b 100644 --- a/arch/arm64/kernel/hibernate-asm.S +++ b/arch/arm64/kernel/hibernate-asm.S @@ -1,20 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Hibernate low-level support * * Copyright (C) 2016 ARM Ltd. * Author: James Morse <james.morse@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/linkage.h> #include <linux/errno.h> diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 9859e1178e6b..9341fcc6e809 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /*: * Hibernate support specific for ARM64 * @@ -11,8 +12,6 @@ * https://patchwork.kernel.org/patch/96442/ * * Copyright (C) 2006 Rafael J. Wysocki <rjw@sisk.pl> - * - * License terms: GNU General Public License (GPL) version 2 */ #define pr_fmt(x) "hibernate: " x #include <linux/cpu.h> diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c index 8c9644376326..dceb84520948 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * HW_breakpoint: a unified kernel/user-space hardware breakpoint facility, * using the CPU's debug registers. * * Copyright (C) 2012 ARM Limited * Author: Will Deacon <will.deacon@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #define pr_fmt(fmt) "hw-breakpoint: " fmt diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S index 17f325ba831e..73d46070b315 100644 --- a/arch/arm64/kernel/hyp-stub.S +++ b/arch/arm64/kernel/hyp-stub.S @@ -1,20 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Hypervisor stub * * Copyright (C) 2012 ARM Ltd. * Author: Marc Zyngier <marc.zyngier@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/init.h> diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index 33f14e484040..04ca08086d35 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h @@ -1,19 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Linker script macros to generate Image header fields. * * Copyright (C) 2014 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __ARM64_KERNEL_IMAGE_H #define __ARM64_KERNEL_IMAGE_H diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 9e2b5882cdeb..84b059ed04fc 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 Huawei Ltd. * Author: Jiang Liu <liuj97@gmail.com> * * Copyright (C) 2014-2016 Zi Shen Lim <zlim.lnx@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/bitops.h> #include <linux/bug.h> diff --git a/arch/arm64/kernel/io.c b/arch/arm64/kernel/io.c index 79b17384effa..aa7a4ec6a3ae 100644 --- a/arch/arm64/kernel/io.c +++ b/arch/arm64/kernel/io.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/io.c * * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/export.h> diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c index 92fa81798fb9..c70034fbd4ce 100644 --- a/arch/arm64/kernel/irq.c +++ b/arch/arm64/kernel/irq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/irq.c * @@ -7,18 +8,6 @@ * Dynamic Tick Timer written by Tony Lindgren <tony@atomide.com> and * Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>. * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel_stat.h> diff --git a/arch/arm64/kernel/jump_label.c b/arch/arm64/kernel/jump_label.c index 1eff270e8861..9a8a0ae1e75f 100644 --- a/arch/arm64/kernel/jump_label.c +++ b/arch/arm64/kernel/jump_label.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 Huawei Ltd. * Author: Jiang Liu <liuj97@gmail.com> * * Based on arch/arm/kernel/jump_label.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> #include <linux/jump_label.h> diff --git a/arch/arm64/kernel/kaslr.c b/arch/arm64/kernel/kaslr.c index b09b6f75f759..708051655ad9 100644 --- a/arch/arm64/kernel/kaslr.c +++ b/arch/arm64/kernel/kaslr.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2016 Linaro Ltd <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/cache.h> @@ -145,15 +142,15 @@ u64 __init kaslr_early_init(u64 dt_phys) if (IS_ENABLED(CONFIG_RANDOMIZE_MODULE_REGION_FULL)) { /* - * Randomize the module region over a 4 GB window covering the + * Randomize the module region over a 2 GB window covering the * kernel. This reduces the risk of modules leaking information * about the address of the kernel itself, but results in * branches between modules and the core kernel that are * resolved via PLTs. (Branches between modules will be * resolved normally.) */ - module_range = SZ_4G - (u64)(_end - _stext); - module_alloc_base = max((u64)_end + offset - SZ_4G, + module_range = SZ_2G - (u64)(_end - _stext); + module_alloc_base = max((u64)_end + offset - SZ_2G, (u64)MODULES_VADDR); } else { /* diff --git a/arch/arm64/kernel/kgdb.c b/arch/arm64/kernel/kgdb.c index 30853d5b7859..43119922341f 100644 --- a/arch/arm64/kernel/kgdb.c +++ b/arch/arm64/kernel/kgdb.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AArch64 KGDB support * @@ -5,18 +6,6 @@ * * Copyright (C) 2013 Cavium Inc. * Author: Vijaya Kumar K <vijaya.kumar@caviumnetworks.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/bug.h> diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 66b5d697d943..0df8493624e0 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * kexec for arm64 * * Copyright (C) Linaro. * Copyright (C) Huawei Futurewei Technologies. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/interrupt.h> diff --git a/arch/arm64/kernel/module-plts.c b/arch/arm64/kernel/module-plts.c index 255941394941..044c0ae4d6c8 100644 --- a/arch/arm64/kernel/module-plts.c +++ b/arch/arm64/kernel/module-plts.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014-2017 Linaro Ltd. <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/elf.h> diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c index f713e2fc4d75..e23a68a5808f 100644 --- a/arch/arm64/kernel/module.c +++ b/arch/arm64/kernel/module.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AArch64 loadable module support. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ @@ -56,7 +45,7 @@ void *module_alloc(unsigned long size) * can simply omit this fallback in that case. */ p = __vmalloc_node_range(size, MODULE_ALIGN, module_alloc_base, - module_alloc_base + SZ_4G, GFP_KERNEL, + module_alloc_base + SZ_2G, GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, __builtin_return_address(0)); @@ -96,16 +85,50 @@ static int reloc_data(enum aarch64_reloc_op op, void *place, u64 val, int len) { s64 sval = do_reloc(op, place, val); + /* + * The ELF psABI for AArch64 documents the 16-bit and 32-bit place + * relative and absolute relocations as having a range of [-2^15, 2^16) + * or [-2^31, 2^32), respectively. However, in order to be able to + * detect overflows reliably, we have to choose whether we interpret + * such quantities as signed or as unsigned, and stick with it. + * The way we organize our address space requires a signed + * interpretation of 32-bit relative references, so let's use that + * for all R_AARCH64_PRELxx relocations. This means our upper + * bound for overflow detection should be Sxx_MAX rather than Uxx_MAX. + */ + switch (len) { case 16: *(s16 *)place = sval; - if (sval < S16_MIN || sval > U16_MAX) - return -ERANGE; + switch (op) { + case RELOC_OP_ABS: + if (sval < 0 || sval > U16_MAX) + return -ERANGE; + break; + case RELOC_OP_PREL: + if (sval < S16_MIN || sval > S16_MAX) + return -ERANGE; + break; + default: + pr_err("Invalid 16-bit data relocation (%d)\n", op); + return 0; + } break; case 32: *(s32 *)place = sval; - if (sval < S32_MIN || sval > U32_MAX) - return -ERANGE; + switch (op) { + case RELOC_OP_ABS: + if (sval < 0 || sval > U32_MAX) + return -ERANGE; + break; + case RELOC_OP_PREL: + if (sval < S32_MIN || sval > S32_MAX) + return -ERANGE; + break; + default: + pr_err("Invalid 32-bit data relocation (%d)\n", op); + return 0; + } break; case 64: *(s64 *)place = sval; diff --git a/arch/arm64/kernel/paravirt.c b/arch/arm64/kernel/paravirt.c index 75c158b0353f..4cfed91fe256 100644 --- a/arch/arm64/kernel/paravirt.c +++ b/arch/arm64/kernel/paravirt.c @@ -1,12 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. * * Copyright (C) 2013 Citrix Systems * diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c index bb85e2f4603f..575bd5517d21 100644 --- a/arch/arm64/kernel/pci.c +++ b/arch/arm64/kernel/pci.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Code borrowed from powerpc/kernel/pci-common.c * * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM * Copyright (C) 2014 ARM Ltd. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/perf_callchain.c b/arch/arm64/kernel/perf_callchain.c index 61d983f5756f..9d63514b9836 100644 --- a/arch/arm64/kernel/perf_callchain.c +++ b/arch/arm64/kernel/perf_callchain.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arm64 callchain support * * Copyright (C) 2015 ARM Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/perf_event.h> #include <linux/uaccess.h> diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 6164d389eed6..96e90e270042 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * ARMv8 PMUv3 Performance Events handling code. * @@ -5,18 +6,6 @@ * Author: Will Deacon <will.deacon@arm.com> * * This code is based heavily on the ARMv7 perf event code. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <asm/irq_regs.h> @@ -26,6 +15,7 @@ #include <linux/acpi.h> #include <linux/clocksource.h> +#include <linux/kvm_host.h> #include <linux/of.h> #include <linux/perf/arm_pmu.h> #include <linux/platform_device.h> @@ -528,12 +518,21 @@ static inline int armv8pmu_enable_counter(int idx) static inline void armv8pmu_enable_event_counter(struct perf_event *event) { + struct perf_event_attr *attr = &event->attr; int idx = event->hw.idx; + u32 counter_bits = BIT(ARMV8_IDX_TO_COUNTER(idx)); - armv8pmu_enable_counter(idx); if (armv8pmu_event_is_chained(event)) - armv8pmu_enable_counter(idx - 1); - isb(); + counter_bits |= BIT(ARMV8_IDX_TO_COUNTER(idx - 1)); + + kvm_set_pmu_events(counter_bits, attr); + + /* We rely on the hypervisor switch code to enable guest counters */ + if (!kvm_pmu_counter_deferred(attr)) { + armv8pmu_enable_counter(idx); + if (armv8pmu_event_is_chained(event)) + armv8pmu_enable_counter(idx - 1); + } } static inline int armv8pmu_disable_counter(int idx) @@ -546,11 +545,21 @@ static inline int armv8pmu_disable_counter(int idx) static inline void armv8pmu_disable_event_counter(struct perf_event *event) { struct hw_perf_event *hwc = &event->hw; + struct perf_event_attr *attr = &event->attr; int idx = hwc->idx; + u32 counter_bits = BIT(ARMV8_IDX_TO_COUNTER(idx)); if (armv8pmu_event_is_chained(event)) - armv8pmu_disable_counter(idx - 1); - armv8pmu_disable_counter(idx); + counter_bits |= BIT(ARMV8_IDX_TO_COUNTER(idx - 1)); + + kvm_clr_pmu_events(counter_bits); + + /* We rely on the hypervisor switch code to disable guest counters */ + if (!kvm_pmu_counter_deferred(attr)) { + if (armv8pmu_event_is_chained(event)) + armv8pmu_disable_counter(idx - 1); + armv8pmu_disable_counter(idx); + } } static inline int armv8pmu_enable_intens(int idx) @@ -827,14 +836,23 @@ static int armv8pmu_set_event_filter(struct hw_perf_event *event, * with other architectures (x86 and Power). */ if (is_kernel_in_hyp_mode()) { - if (!attr->exclude_kernel) + if (!attr->exclude_kernel && !attr->exclude_host) config_base |= ARMV8_PMU_INCLUDE_EL2; - } else { - if (attr->exclude_kernel) + if (attr->exclude_guest) config_base |= ARMV8_PMU_EXCLUDE_EL1; - if (!attr->exclude_hv) + if (attr->exclude_host) + config_base |= ARMV8_PMU_EXCLUDE_EL0; + } else { + if (!attr->exclude_hv && !attr->exclude_host) config_base |= ARMV8_PMU_INCLUDE_EL2; } + + /* + * Filter out !VHE kernels and guest kernels + */ + if (attr->exclude_kernel) + config_base |= ARMV8_PMU_EXCLUDE_EL1; + if (attr->exclude_user) config_base |= ARMV8_PMU_EXCLUDE_EL0; @@ -864,6 +882,9 @@ static void armv8pmu_reset(void *info) armv8pmu_disable_intens(idx); } + /* Clear the counters we flip at guest entry/exit */ + kvm_clr_pmu_events(U32_MAX); + /* * Initialize & Reset PMNC. Request overflow interrupt for * 64 bit cycle counter but cheat in armv8pmu_write_counter(). diff --git a/arch/arm64/kernel/probes/decode-insn.c b/arch/arm64/kernel/probes/decode-insn.c index 6bf6657a5a52..b78fac9e546c 100644 --- a/arch/arm64/kernel/probes/decode-insn.c +++ b/arch/arm64/kernel/probes/decode-insn.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/probes/decode-insn.c * * Copyright (C) 2013 Linaro Limited. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #include <linux/kernel.h> diff --git a/arch/arm64/kernel/probes/decode-insn.h b/arch/arm64/kernel/probes/decode-insn.h index 192ab007bacb..8b758c5a2062 100644 --- a/arch/arm64/kernel/probes/decode-insn.h +++ b/arch/arm64/kernel/probes/decode-insn.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm64/kernel/probes/decode-insn.h * * Copyright (C) 2013 Linaro Limited. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #ifndef _ARM_KERNEL_KPROBES_ARM64_H diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c index 2509fcb6d404..88ce502c8e6f 100644 --- a/arch/arm64/kernel/probes/kprobes.c +++ b/arch/arm64/kernel/probes/kprobes.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/probes/kprobes.c * @@ -5,16 +6,6 @@ * * Copyright (C) 2013 Linaro Limited. * Author: Sandeepa Prabhu <sandeepa.prabhu@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * */ #include <linux/kasan.h> #include <linux/kernel.h> diff --git a/arch/arm64/kernel/probes/simulate-insn.c b/arch/arm64/kernel/probes/simulate-insn.c index be05868418ee..25f67ec59635 100644 --- a/arch/arm64/kernel/probes/simulate-insn.c +++ b/arch/arm64/kernel/probes/simulate-insn.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/probes/simulate-insn.c * * Copyright (C) 2013 Linaro Limited. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #include <linux/bitops.h> diff --git a/arch/arm64/kernel/probes/simulate-insn.h b/arch/arm64/kernel/probes/simulate-insn.h index 050bde683c2d..e065dc92218e 100644 --- a/arch/arm64/kernel/probes/simulate-insn.h +++ b/arch/arm64/kernel/probes/simulate-insn.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm64/kernel/probes/simulate-insn.h * * Copyright (C) 2013 Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. */ #ifndef _ARM_KERNEL_KPROBES_SIMULATE_INSN_H diff --git a/arch/arm64/kernel/probes/uprobes.c b/arch/arm64/kernel/probes/uprobes.c index 605945eac1f8..a412d8edbcd2 100644 --- a/arch/arm64/kernel/probes/uprobes.c +++ b/arch/arm64/kernel/probes/uprobes.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014-2016 Pratyush Anand <panand@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/highmem.h> #include <linux/ptrace.h> diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 3767fb21a5b8..9856395ccdb7 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/process.c * * Original Copyright (C) 1995 Linus Torvalds * Copyright (C) 1996-2000 Russell King - Converted to ARM. * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdarg.h> diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 8cdaf25e99cd..85ee7d07889e 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -1,12 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. * * Copyright (C) 2013 ARM Limited * diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index b82e0a9b3da3..da2441d7b066 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/ptrace.c * @@ -5,18 +6,6 @@ * edited by Linus Torvalds * ARM modifications Copyright (C) 2000 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/audit.h> diff --git a/arch/arm64/kernel/reloc_test_core.c b/arch/arm64/kernel/reloc_test_core.c index 5915ce5759cc..e87a2b7f20f6 100644 --- a/arch/arm64/kernel/reloc_test_core.c +++ b/arch/arm64/kernel/reloc_test_core.c @@ -1,10 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/module.h> diff --git a/arch/arm64/kernel/reloc_test_syms.S b/arch/arm64/kernel/reloc_test_syms.S index 2b8d9cb8b078..16a34f188f26 100644 --- a/arch/arm64/kernel/reloc_test_syms.S +++ b/arch/arm64/kernel/reloc_test_syms.S @@ -1,10 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <linux/linkage.h> diff --git a/arch/arm64/kernel/relocate_kernel.S b/arch/arm64/kernel/relocate_kernel.S index 95fd94209aae..c1d7db71a726 100644 --- a/arch/arm64/kernel/relocate_kernel.S +++ b/arch/arm64/kernel/relocate_kernel.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * kexec for arm64 * * Copyright (C) Linaro. * Copyright (C) Huawei Futurewei Technologies. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kexec.h> diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c index 53c40196b607..b21cba90f82d 100644 --- a/arch/arm64/kernel/return_address.c +++ b/arch/arm64/kernel/return_address.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/return_address.c * * Copyright (C) 2013 Linaro Limited * Author: AKASHI Takahiro <takahiro.akashi@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/export.h> diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 413d566405d1..7e541f947b4c 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/setup.c * * Copyright (C) 1995-2001 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 867a7cea70e5..dd2cdc0d5be2 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/signal.c * * Copyright (C) 1995-2009 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/cache.h> @@ -296,11 +285,6 @@ static int restore_sve_fpsimd_context(struct user_ctxs *user) */ fpsimd_flush_task_state(current); - barrier(); - /* From now, fpsimd_thread_switch() won't clear TIF_FOREIGN_FPSTATE */ - - set_thread_flag(TIF_FOREIGN_FPSTATE); - barrier(); /* From now, fpsimd_thread_switch() won't touch thread.sve_state */ sve_alloc(current); diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index caea6e25db2a..331d1e5acad4 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/signal.c * * Copyright (C) 1995-2009 Russell King * Copyright (C) 2012 ARM Ltd. * Modified by Will Deacon <will.deacon@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/compat.h> diff --git a/arch/arm64/kernel/smccc-call.S b/arch/arm64/kernel/smccc-call.S index 184332286a81..54655273d1e0 100644 --- a/arch/arm64/kernel/smccc-call.S +++ b/arch/arm64/kernel/smccc-call.S @@ -1,15 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2015, Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License Version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/linkage.h> #include <linux/arm-smccc.h> diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index bb4b3f07761a..6dcf9607d770 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * SMP initialisation and IPI support * Based on arch/arm/kernel/smp.c * * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/acpi.h> diff --git a/arch/arm64/kernel/smp_spin_table.c b/arch/arm64/kernel/smp_spin_table.c index 93034651c87e..76c2739ba8a4 100644 --- a/arch/arm64/kernel/smp_spin_table.c +++ b/arch/arm64/kernel/smp_spin_table.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Spin Table SMP initialisation * * Copyright (C) 2013 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/delay.h> diff --git a/arch/arm64/kernel/ssbd.c b/arch/arm64/kernel/ssbd.c index 885f13e58708..52cfc6148355 100644 --- a/arch/arm64/kernel/ssbd.c +++ b/arch/arm64/kernel/ssbd.c @@ -5,6 +5,7 @@ #include <linux/compat.h> #include <linux/errno.h> +#include <linux/prctl.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> #include <linux/thread_info.h> diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index b00ec7d483d1..62d395151abe 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Stack tracing support * * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> #include <linux/export.h> diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 6f91e8116514..d5ffaaab31a7 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AArch64-specific system calls implementation * * Copyright (C) 2012 ARM Ltd. * Author: Catalin Marinas <catalin.marinas@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/compiler.h> @@ -47,22 +36,26 @@ SYSCALL_DEFINE1(arm64_personality, unsigned int, personality) return ksys_personality(personality); } +asmlinkage long sys_ni_syscall(void); + +asmlinkage long __arm64_sys_ni_syscall(const struct pt_regs *__unused) +{ + return sys_ni_syscall(); +} + /* * Wrappers to pass the pt_regs argument. */ -#define sys_personality sys_arm64_personality - -asmlinkage long sys_ni_syscall(const struct pt_regs *); -#define __arm64_sys_ni_syscall sys_ni_syscall +#define __arm64_sys_personality __arm64_sys_arm64_personality #undef __SYSCALL #define __SYSCALL(nr, sym) asmlinkage long __arm64_##sym(const struct pt_regs *); #include <asm/unistd.h> #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = (syscall_fn_t)__arm64_##sym, +#define __SYSCALL(nr, sym) [nr] = __arm64_##sym, const syscall_fn_t sys_call_table[__NR_syscalls] = { - [0 ... __NR_syscalls - 1] = (syscall_fn_t)sys_ni_syscall, + [0 ... __NR_syscalls - 1] = __arm64_sys_ni_syscall, #include <asm/unistd.h> }; diff --git a/arch/arm64/kernel/sys32.c b/arch/arm64/kernel/sys32.c index 0f8bcb7de700..fc40386afb1b 100644 --- a/arch/arm64/kernel/sys32.c +++ b/arch/arm64/kernel/sys32.c @@ -1,19 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm64/kernel/sys32.c * * Copyright (C) 2015 ARM Ltd. - * - * This program is free software(void); you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http(void);//www.gnu.org/licenses/>. */ /* @@ -133,17 +122,14 @@ COMPAT_SYSCALL_DEFINE6(aarch32_fallocate, int, fd, int, mode, return ksys_fallocate(fd, mode, arg_u64(offset), arg_u64(len)); } -asmlinkage long sys_ni_syscall(const struct pt_regs *); -#define __arm64_sys_ni_syscall sys_ni_syscall - #undef __SYSCALL #define __SYSCALL(nr, sym) asmlinkage long __arm64_##sym(const struct pt_regs *); #include <asm/unistd32.h> #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = (syscall_fn_t)__arm64_##sym, +#define __SYSCALL(nr, sym) [nr] = __arm64_##sym, const syscall_fn_t compat_sys_call_table[__NR_compat_syscalls] = { - [0 ... __NR_compat_syscalls - 1] = (syscall_fn_t)sys_ni_syscall, + [0 ... __NR_compat_syscalls - 1] = __arm64_sys_ni_syscall, #include <asm/unistd32.h> }; diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c index c832a5c24efc..f1cb64959427 100644 --- a/arch/arm64/kernel/sys_compat.c +++ b/arch/arm64/kernel/sys_compat.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/sys_arm.c * * Copyright (C) People who wrote linux/arch/i386/kernel/sys_i386.c * Copyright (C) 1995, 1996 Russell King. * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/compat.h> diff --git a/arch/arm64/kernel/syscall.c b/arch/arm64/kernel/syscall.c index 5610ac01c1ec..871c739f060a 100644 --- a/arch/arm64/kernel/syscall.c +++ b/arch/arm64/kernel/syscall.c @@ -8,6 +8,7 @@ #include <linux/syscalls.h> #include <asm/daifflags.h> +#include <asm/debug-monitors.h> #include <asm/fpsimd.h> #include <asm/syscall.h> #include <asm/thread_info.h> @@ -60,6 +61,35 @@ static inline bool has_syscall_work(unsigned long flags) int syscall_trace_enter(struct pt_regs *regs); void syscall_trace_exit(struct pt_regs *regs); +#ifdef CONFIG_ARM64_ERRATUM_1463225 +DECLARE_PER_CPU(int, __in_cortex_a76_erratum_1463225_wa); + +static void cortex_a76_erratum_1463225_svc_handler(void) +{ + u32 reg, val; + + if (!unlikely(test_thread_flag(TIF_SINGLESTEP))) + return; + + if (!unlikely(this_cpu_has_cap(ARM64_WORKAROUND_1463225))) + return; + + __this_cpu_write(__in_cortex_a76_erratum_1463225_wa, 1); + reg = read_sysreg(mdscr_el1); + val = reg | DBG_MDSCR_SS | DBG_MDSCR_KDE; + write_sysreg(val, mdscr_el1); + asm volatile("msr daifclr, #8"); + isb(); + + /* We will have taken a single-step exception by this point */ + + write_sysreg(reg, mdscr_el1); + __this_cpu_write(__in_cortex_a76_erratum_1463225_wa, 0); +} +#else +static void cortex_a76_erratum_1463225_svc_handler(void) { } +#endif /* CONFIG_ARM64_ERRATUM_1463225 */ + static void el0_svc_common(struct pt_regs *regs, int scno, int sc_nr, const syscall_fn_t syscall_table[]) { @@ -68,6 +98,7 @@ static void el0_svc_common(struct pt_regs *regs, int scno, int sc_nr, regs->orig_x0 = regs->regs[0]; regs->syscallno = scno; + cortex_a76_erratum_1463225_svc_handler(); local_daif_restore(DAIF_PROCCTX); user_exit(); diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c index a777ae90044d..9f25aedeac9d 100644 --- a/arch/arm64/kernel/time.c +++ b/arch/arm64/kernel/time.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/time.c * * Copyright (C) 1991, 1992, 1995 Linus Torvalds * Modifications for ARM (C) 1994-2001 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/clockchips.h> diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index ade32046f3fe..985721a1264c 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Based on arch/arm/kernel/traps.c * * Copyright (C) 1995-2009 Russell King * Copyright (C) 2012 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/bug.h> @@ -168,7 +157,6 @@ void show_stack(struct task_struct *tsk, unsigned long *sp) static int __die(const char *str, int err, struct pt_regs *regs) { - struct task_struct *tsk = current; static int die_counter; int ret; @@ -181,9 +169,6 @@ static int __die(const char *str, int err, struct pt_regs *regs) return ret; print_modules(); - pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n", - TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), - end_of_stack(tsk)); show_regs(regs); if (!user_mode(regs)) @@ -256,7 +241,10 @@ void arm64_force_sig_fault(int signo, int code, void __user *addr, const char *str) { arm64_show_signal(signo, str); - force_sig_fault(signo, code, addr, current); + if (signo == SIGKILL) + force_sig(SIGKILL, current); + else + force_sig_fault(signo, code, addr, current); } void arm64_force_sig_mceerr(int code, void __user *addr, short lsb, diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index 8074cbd3a3a8..663b166241d0 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * VDSO implementations. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index 744b9dbaba03..fa230ff09aa1 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -12,8 +12,8 @@ obj-vdso := gettimeofday.o note.o sigreturn.o targets := $(obj-vdso) vdso.so vdso.so.dbg obj-vdso := $(addprefix $(obj)/, $(obj-vdso)) -ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 \ - $(call ld-option, --hash-style=sysv) -n -T +ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ + --build-id -n -T # Disable gcov profiling for VDSO code GCOV_PROFILE := n diff --git a/arch/arm64/kernel/vdso/gettimeofday.S b/arch/arm64/kernel/vdso/gettimeofday.S index 856fee6d3512..80f780f56e0d 100644 --- a/arch/arm64/kernel/vdso/gettimeofday.S +++ b/arch/arm64/kernel/vdso/gettimeofday.S @@ -1,20 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Userspace implementations of gettimeofday() and friends. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ diff --git a/arch/arm64/kernel/vdso/note.S b/arch/arm64/kernel/vdso/note.S index e20483b104d9..0ce6ec75a525 100644 --- a/arch/arm64/kernel/vdso/note.S +++ b/arch/arm64/kernel/vdso/note.S @@ -1,18 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> * * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text. diff --git a/arch/arm64/kernel/vdso/sigreturn.S b/arch/arm64/kernel/vdso/sigreturn.S index 20d98effa7dd..0723aa398d6e 100644 --- a/arch/arm64/kernel/vdso/sigreturn.S +++ b/arch/arm64/kernel/vdso/sigreturn.S @@ -1,21 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Sigreturn trampoline for returning from a signal when the SA_RESTORER * flag is not set. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ diff --git a/arch/arm64/kernel/vdso/vdso.S b/arch/arm64/kernel/vdso/vdso.S index 82379a70ef03..d1414fee5274 100644 --- a/arch/arm64/kernel/vdso/vdso.S +++ b/arch/arm64/kernel/vdso/vdso.S @@ -1,18 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> */ diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S index beca249bc2f3..7ad2d3a0cd48 100644 --- a/arch/arm64/kernel/vdso/vdso.lds.S +++ b/arch/arm64/kernel/vdso/vdso.lds.S @@ -1,20 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * GNU linker script for the VDSO library. * * Copyright (C) 2012 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * * Author: Will Deacon <will.deacon@arm.com> * Heavily based on the vDSO linker scripts for other archs. */ |