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* arm64: compat: wire up compat_sys_execveatWill Deacon2015-01-121-0/+2
| | | | | | | | | With 841ee230253f ("ARM: wire up execveat syscall"), arch/arm/ has grown support for the execveat system call. This patch wires up the compat variant for arm64. Signed-off-by: Will Deacon <will.deacon@arm.com>
* Merge tag 'arm64-upstream' of ↵Linus Torvalds2014-12-091-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "Here's the usual mixed bag of arm64 updates, also including some related EFI changes (Acked by Matt) and the MMU gather range cleanup (Acked by you). Changes include: - support for alternative instruction patching from Andre - seccomp from Akashi - some AArch32 instruction emulation, required by the Android folks - optimisations for exception entry/exit code, cmpxchg, pcpu atomics - mmu_gather range calculations moved into core code - EFI updates from Ard, including long-awaited SMBIOS support - /proc/cpuinfo fixes to align with the format used by arch/arm/ - a few non-critical fixes across the architecture" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits) arm64: remove the unnecessary arm64_swiotlb_init() arm64: add module support for alternatives fixups arm64: perf: Prevent wraparound during overflow arm64/include/asm: Fixed a warning about 'struct pt_regs' arm64: Provide a namespace to NCAPS arm64: bpf: lift restriction on last instruction arm64: Implement support for read-mostly sections arm64: compat: align cacheflush syscall with arch/arm arm64: add seccomp support arm64: add SIGSYS siginfo for compat task arm64: add seccomp syscall for compat task asm-generic: add generic seccomp.h for secure computing mode 1 arm64: ptrace: allow tracer to skip a system call arm64: ptrace: add NT_ARM_SYSTEM_CALL regset arm64: Move some head.text functions to executable section arm64: jump labels: NOP out NOP -> NOP replacement arm64: add support to dump the kernel page tables arm64: Add FIX_HOLE to permanent fixed addresses arm64: alternatives: fix pr_fmt string for consistency arm64: vmlinux.lds.S: don't discard .exit.* sections at link-time ...
| * arm64: add seccomp syscall for compat taskAKASHI Takahiro2014-11-281-1/+2
| | | | | | | | | | | | | | | | This patch allows compat task to issue seccomp() system call. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
* | arm64: compat: Enable bpf syscallCatalin Marinas2014-11-051-0/+2
|/ | | | | | | Following the arm32 commit 2d605a302972 (ARM: enable bpf syscall), wire this syscall for arm64 compat as well. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: compat: wire up memfd_create and getrandom syscalls for aarch32Will Deacon2014-08-181-0/+5
| | | | | | | arch/arm/ just grew support for the new memfd_create and getrandom syscalls, so add them to our compat layer too. Signed-off-by: Will Deacon <will.deacon@arm.com>
* arm64: Add __NR_* definitions for compat syscallsCatalin Marinas2014-07-101-400/+766
| | | | | | | | | | | | This patch adds __NR_* definitions to asm/unistd32.h, moves the __NR_compat_* definitions to asm/unistd.h and removes all the explicit unistd32.h includes apart from the one building the compat syscall table. The aim is to have the compat __NR_* definitions available but without colliding with the native syscall definitions (required by lib/compat_audit.c to avoid duplicating the audit header files between native and compat). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: add renameat2 compat syscallMiklos Szeredi2014-04-231-1/+2
| | | | | | | Wire up the renameat2 syscall for compat (AArch32) applications. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: __NR_compat_syscalls fixMiklos Szeredi2014-04-221-1/+1
| | | | | | | | | This fixes commit 6290b53de025 (arm64: compat: Wire up new AArch32 syscalls) which did not update __NR_compat_syscalls accordingly. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: <stable@vger.kernel.org> # 3.14+ Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: compat: Wire up new AArch32 syscallsCatalin Marinas2014-02-051-1/+4
| | | | | | | This patch enables sys_compat, sys_finit_module, sys_sched_setattr and sys_sched_getattr for compat (AArch32) applications. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINEAl Viro2013-05-091-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fix compat truncate/ftruncateAl Viro2013-02-251-2/+2
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* switch lseek to COMPAT_SYSCALL_DEFINEAl Viro2013-02-241-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: switch compat to generic old sigsuspendAl Viro2013-02-141-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: switch to generic sigaltstackAl Viro2013-02-141-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* arm64: compat: add syscall table entries for new syscallsWill Deacon2013-01-151-1/+6
| | | | | | | | | There have been a number of new syscalls introduced to arch/arm/ since the compat layer was implemented for arm64, so add pointers to the relevant functions to the compat syscall table. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-12-121-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull big execve/kernel_thread/fork unification series from Al Viro: "All architectures are converted to new model. Quite a bit of that stuff is actually shared with architecture trees; in such cases it's literally shared branch pulled by both, not a cherry-pick. A lot of ugliness and black magic is gone (-3KLoC total in this one): - kernel_thread()/kernel_execve()/sys_execve() redesign. We don't do syscalls from kernel anymore for either kernel_thread() or kernel_execve(): kernel_thread() is essentially clone(2) with callback run before we return to userland, the callbacks either never return or do successful do_execve() before returning. kernel_execve() is a wrapper for do_execve() - it doesn't need to do transition to user mode anymore. As a result kernel_thread() and kernel_execve() are arch-independent now - they live in kernel/fork.c and fs/exec.c resp. sys_execve() is also in fs/exec.c and it's completely architecture-independent. - daemonize() is gone, along with its parts in fs/*.c - struct pt_regs * is no longer passed to do_fork/copy_process/ copy_thread/do_execve/search_binary_handler/->load_binary/do_coredump. - sys_fork()/sys_vfork()/sys_clone() unified; some architectures still need wrappers (ones with callee-saved registers not saved in pt_regs on syscall entry), but the main part of those suckers is in kernel/fork.c now." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (113 commits) do_coredump(): get rid of pt_regs argument print_fatal_signal(): get rid of pt_regs argument ptrace_signal(): get rid of unused arguments get rid of ptrace_signal_deliver() arguments new helper: signal_pt_regs() unify default ptrace_signal_deliver flagday: kill pt_regs argument of do_fork() death to idle_regs() don't pass regs to copy_process() flagday: don't pass regs to copy_thread() bfin: switch to generic vfork, get rid of pointless wrappers xtensa: switch to generic clone() openrisc: switch to use of generic fork and clone unicore32: switch to generic clone(2) score: switch to generic fork/vfork/clone c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone() take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h mn10300: switch to generic fork/vfork/clone h8300: switch to generic fork/vfork/clone tile: switch to generic clone() ... Conflicts: arch/microblaze/include/asm/Kbuild
| * arm64: sanitize copy_thread(), switch to generic fork/vfork/cloneAl Viro2012-11-291-2/+2
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge tag 'arm64-for-linus' of ↵Linus Torvalds2012-12-121-5/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull ARM64 updates from Catalin Marinas: - Generic execve, kernel_thread, fork/vfork/clone. - Preparatory patches for KVM support (initialising EL2 mode for later installing KVM support, hypervisor stub). - Signal handling corner case fix (alternative signal stack set up for a SEGV handler, which is raised in response to RLIMIT_STACK being reached). - Sub-nanosecond timer error fix. * tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: (30 commits) arm64: Update the MAINTAINERS entry arm64: compat for clock_adjtime(2) is miswired arm64: move FP-SIMD save/restore code to a macro arm64: hyp: initialize vttbr_el2 to zero arm64: add hypervisor stub arm64: record boot mode when entering the kernel arm64: move vector entry macro to assembler.h arm64: add AArch32 execution modes to ptrace.h arm64: expand register mapping between AArch32 and AArch64 arm64: generic timer: use virtual counter instead of physical at EL0 arm64: vdso: defer shifting of nanosecond component of timespec arm64: vdso: rework __do_get_tspec register allocation and return shift arm64: vdso: check sequence counter even for coarse realtime operations arm64: vdso: fix clocksource mask when extracting bottom 56 bits ARM64: Remove incorrect Kconfig symbol HAVE_SPARSE_IRQ Documentation: Fixes a word in Documentation/arm64/memory.txt arm64: Make !dirty ptes read-only arm64: Convert empty flush_cache_{mm,page} functions to static inline arm64: signal: let the compiler inline compat_get_sigframe arm64: signal: return struct rt_sigframe from get_sigframe ... Conflicts: arch/arm64/include/asm/unistd32.h
| * | arm64: compat for clock_adjtime(2) is miswiredAl Viro2012-12-051-1/+1
| |/ | | | | | | | | | | | | | | | | | | struct timex is different on arm and arm64; adjtimex(2) takes care to convert, clock_adjtime(2) doesn't... Signed-off-by: Al Viro <viro@ZenIV.linux.org.uk> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: <stable@vger.kernel.org>
| * arm64: get rid of fork/vfork/clone wrappersAl Viro2012-10-231-3/+3
| | | | | | | | | | | | | | | | [fixes from Catalin Marinas folded] Acked-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * arm64: Use generic sys_execve() implementationCatalin Marinas2012-10-171-1/+1
| | | | | | | | | | | | | | | | This patch converts the arm64 port to use the generic sys_execve() implementation removing the arm64-specific (compat_)sys_execve_wrapper() functions. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | open*(2) compat fixes (s390, arm64)Al Viro2012-12-021-1/+1
|/ | | | | | | | | | | | | | | | | | | The usual rules for open()/openat()/open_by_handle_at() are 1) native 32bit - don't force O_LARGEFILE in flags 2) native 64bit - force O_LARGEFILE in flags 3) compat on 64bit host - as for native 32bit 4) native 32bit ABI for 64bit system (mips/n32, x86/x32) - as for native 64bit There are only two exceptions - s390 compat has open() forcing O_LARGEFILE and arm64 compat has open_by_handle_at() doing the same thing. The same binaries on native host (s390/31 and arm resp.) will *not* force O_LARGEFILE, so IMO both are emulation bugs. Objections? The fix is obvious... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* arm64: Do not include asm/unistd32.h in asm/unistd.hCatalin Marinas2012-10-111-18/+0Star
| | | | | | | | | This patch only includes asm/unistd32.h where necessary and removes its inclusion in the asm/unistd.h file. The __SYSCALL_COMPAT guard is dropped. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will.deacon@arm.com>
* arm64: Remove unused definitions from asm/unistd32.hCatalin Marinas2012-10-111-707/+384Star
| | | | | | | | | | | This patch removes the compat __NR_* definitions from the unistd32.h file and only keeps those that are used by the AArch64 kernel with a new __NR_compat_* prefix. The additional wrapper definitions in arch/arm64/kernel/sys32.S have been removed and the actual wrapper names included in the asm/unistd32.h file. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will.deacon@arm.com>
* arm64: Use the generic compat_sys_sendfile() implementationCatalin Marinas2012-10-081-0/+1
| | | | | | | | The generic implementation of compat_sys_sendfile() has been introduced by commit 8f9c0119. This patch removes the arm64 implementation in favour of the generic one. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* UAPI: Fix the guards on various asm/unistd.h filesDavid Howells2012-10-041-4/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | asm-generic/unistd.h and a number of asm/unistd.h files have been given reinclusion guards that allow the guard to be overridden if __SYSCALL is defined. Unfortunately, these files define __SYSCALL and don't undefine it when they've finished with it, thus rendering the guard ineffective. The reason for this override is to allow the file to be #included multiple times with different settings on __SYSCALL for purposes like generating syscall tables. The following guards are problematic: arch/arm64/include/asm/unistd.h:#if !defined(__ASM_UNISTD_H) || defined(__SYSCALL) arch/arm64/include/asm/unistd32.h:#if !defined(__ASM_UNISTD32_H) || defined(__SYSCALL) arch/c6x/include/asm/unistd.h:#if !defined(_ASM_C6X_UNISTD_H) || defined(__SYSCALL) arch/hexagon/include/asm/unistd.h:#if !defined(_ASM_HEXAGON_UNISTD_H) || defined(__SYSCALL) arch/openrisc/include/asm/unistd.h:#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL) arch/score/include/asm/unistd.h:#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL) arch/tile/include/asm/unistd.h:#if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL) arch/unicore32/include/asm/unistd.h:#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL) include/asm-generic/unistd.h:#if !defined(_ASM_GENERIC_UNISTD_H) || defined(__SYSCALL) On the assumption that the guards' ineffectiveness has passed unnoticed, just remove these guards entirely. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
* arm64: 32-bit (compat) applications supportWill Deacon2012-09-171-0/+758
This patch adds support for 32-bit applications. The vectors page is a binary blob mapped into the application user space at 0xffff0000 (the AArch64 toolchain does not support compilation of AArch32 code). Full compatibility with ARMv7 user space is supported. The use of deprecated ARMv7 functionality (SWP, CP15 barriers) has been disabled by default on AArch64 kernels and unaligned LDM/STM is not supported. Please note that only the ARM 32-bit EABI is supported, so no OABI compatibility. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
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