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* Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2014-01-022-6/+5Star
|\ | | | | | | | | | | | | | | Pull kvm bugfixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: nVMX: Unconditionally uninit the MMU on nested vmexit KVM: x86: Fix APIC map calculation after re-enabling
| * KVM: nVMX: Unconditionally uninit the MMU on nested vmexitJan Kiszka2014-01-021-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three reasons for doing this: 1. arch.walk_mmu points to arch.mmu anyway in case nested EPT wasn't in use. 2. this aligns VMX with SVM. But 3. is most important: nested_cpu_has_ept(vmcs12) queries the VMCS page, and if one guest VCPU manipulates the page of another VCPU in L2, we may be fooled to skip over the nested_ept_uninit_mmu_context, leaving mmu in nested state. That can crash the host later on if nested_ept_get_cr3 is invoked while L1 already left vmxon and nested.current_vmcs12 became NULL therefore. Cc: stable@kernel.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: x86: Fix APIC map calculation after re-enablingJan Kiszka2013-12-301-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Update arch.apic_base before triggering recalculate_apic_map. Otherwise the recalculation will work against the previous state of the APIC and will fail to build the correct map when an APIC is hardware-enabled again. This fixes a regression of 1e08ec4a13. Cc: stable@vger.kernel.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* | Merge branch 'akpm' (incoming from Andrew)Linus Torvalds2014-01-021-0/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge patches from Andrew Morton: "Ten fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: epoll: do not take the nested ep->mtx on EPOLL_CTL_DEL sh: add EXPORT_SYMBOL(min_low_pfn) and EXPORT_SYMBOL(max_low_pfn) to sh_ksyms_32.c drivers/dma/ioat/dma.c: check DMA mapping error in ioat_dma_self_test() mm/memory-failure.c: transfer page count from head page to tail page after split thp MAINTAINERS: set up proper record for Xilinx Zynq mm: remove bogus warning in copy_huge_pmd() memcg: fix memcg_size() calculation mm: fix use-after-free in sys_remap_file_pages mm: munlock: fix deadlock in __munlock_pagevec() mm: munlock: fix a bug where THP tail page is encountered
| * | sh: add EXPORT_SYMBOL(min_low_pfn) and EXPORT_SYMBOL(max_low_pfn) to ↵Nobuhiro Iwamatsu2014-01-021-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sh_ksyms_32.c Min_low_pfn and max_low_pfn were used in pfn_valid macro if defined CONFIG_FLATMEM. When the functions that use the pfn_valid is used in driver module, max_low_pfn and min_low_pfn is to undefined, and fail to build. ERROR: "min_low_pfn" [drivers/block/aoe/aoe.ko] undefined! ERROR: "max_low_pfn" [drivers/block/aoe/aoe.ko] undefined! make[2]: *** [__modpost] Error 1 make[1]: *** [modules] Error 2 This patch fix this problem. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2014-01-025-10/+21
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Two small bug fixes and a follow-up to the CONFIG_NR_CPUS change. A kernel compiled with CONFIG_NR_CPUS=256 will waste quite a bit of memory for the per-cpu arrays. Under z/VM the maximum number of CPUs is 64, the code now limits the possible cpu mask to 64 if running under z/VM" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/pci: obtain function handle in hotplug notifier s390/3270: fix allocation of tty3270_screen structure s390/smp: improve setup of possible cpu mask
| * | s390/pci: obtain function handle in hotplug notifierSebastian Ott2013-12-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using the CLP interface to enable or disable a pci device a valid function handle needs to be delivered. So far our assumption was that we always have an up-to-date version of the function handle (since it doesn't change when the device is in use). This assumption is incorrect if the pci device is enabled or disabled outside of our control. When we are notified about such a change we already receive the new function handle. Just use it. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/smp: improve setup of possible cpu maskHeiko Carstens2013-12-184-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since under z/VM we cannot have more than 64 cpus, make sure the cpu_possible_mask does not contain more bits. This avoids wasting memory for dynamic per-cpu allocations if CONFIG_NR_CPUS is larger than 64. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge branch 'merge' of ↵Linus Torvalds2013-12-307-34/+60
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Ben Herrenschmidt: "A bit more endian problems found during testing of 3.13 and a few other simple fixes and regressions fixes" * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix alignment of secondary cpu spin vars powerpc: Align p_end powernv/eeh: Add buffer for P7IOC hub error data powernv/eeh: Fix possible buffer overrun in ioda_eeh_phb_diag() powerpc: Make 64-bit non-VMX __copy_tofrom_user bi-endian powerpc: Make unaligned accesses endian-safe for powerpc powerpc: Fix bad stack check in exception entry powerpc/512x: dts: disable MPC5125 usb module powerpc/512x: dts: remove misplaced IRQ spec from 'soc' node (5125)
| * \ \ Merge remote-tracking branch 'agust/merge' into mergeBenjamin Herrenschmidt2013-12-301-1/+5
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Anatolij writes: Please pull two DTS fixes for MPC5125 tower board. Without them the v3.13-rcX kernels do not boot.
| | * | | powerpc/512x: dts: disable MPC5125 usb moduleMatteo Facchinetti2013-12-201-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the moment the USB controller's pin muxing is not setup correctly and causes a kernel panic upon system startup, so disable the USB1 device tree node in the MPC5125 tower board dts file. The USB controller is connected to an USB3320 ULPI transceiver and the device tree should receive an update to reflect correct dependencies and required initialization data before the USB1 node can get re-enabled. Signed-off-by: Matteo Facchinetti <matteo.facchinetti@sirius-es.it> Signed-off-by: Anatolij Gustschin <agust@denx.de>
| | * | | powerpc/512x: dts: remove misplaced IRQ spec from 'soc' node (5125)Gerhard Sittig2013-12-181-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the 'soc' node in the MPC5125 "tower" board .dts has an '#interrupt-cells' property although this node is not an interrupt controller remove this erroneously placed property because starting with v3.13-rc1 lookup and resolution of 'interrupts' specs for peripherals gets misled (tries to use the 'soc' as the interrupt parent which fails), emits 'no irq domain found' WARN() messages and breaks the boot process [ best viewed with 'git diff -U5' to have DT node names in the context ] Cc: Anatolij Gustschin <agust@denx.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: devicetree@vger.kernel.org Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de>
| * | | | powerpc: Fix alignment of secondary cpu spin varsOlof Johansson2013-12-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 5c0484e25ec0 ('powerpc: Endian safe trampoline') resulted in losing proper alignment of the spinlock variables used when booting secondary CPUs, causing some quite odd issues with failing to boot on PA Semi-based systems. This showed itself on ppc64_defconfig, but not on pasemi_defconfig, so it had gone unnoticed when I initially tested the LE patch set. Fix is to add explicit alignment instead of relying on good luck. :) [ It appears that there is a different issue with PA Semi systems however this fix is definitely correct so applying anyway -- BenH ] Fixes: 5c0484e25ec0 ('powerpc: Endian safe trampoline') Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=67811 Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Align p_endAnton Blanchard2013-12-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | p_end is an 8 byte value embedded in the text section. This means it is only 4 byte aligned when it should be 8 byte aligned. Fix this by adding an explicit alignment. This fixes an issue where POWER7 little endian builds with CONFIG_RELOCATABLE=y fail to boot. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powernv/eeh: Add buffer for P7IOC hub error dataBrian W Hart2013-12-302-14/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prevent ioda_eeh_hub_diag() from clobbering itself when called by supplying a per-PHB buffer for P7IOC hub diagnostic data. Take care to inform OPAL of the correct size for the buffer. [Small style change to the use of sizeof -- BenH] Signed-off-by: Brian W Hart <hartb@linux.vnet.ibm.com> Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powernv/eeh: Fix possible buffer overrun in ioda_eeh_phb_diag()Brian W Hart2013-12-301-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PHB diagnostic buffer may be smaller than PAGE_SIZE, especially when PAGE_SIZE > 4KB. Signed-off-by: Brian W Hart <hartb@linux.vnet.ibm.com> Acked-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Make 64-bit non-VMX __copy_tofrom_user bi-endianPaul E. McKenney2013-12-301-15/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc 64-bit __copy_tofrom_user() function uses shifts to handle unaligned invocations. However, these shifts were designed for big-endian systems: On little-endian systems, they must shift in the opposite direction. This commit relies on the C preprocessor to insert the correct shifts into the assembly code. [ This is a rare but nasty LE issue. Most of the time we use the POWER7 optimised __copy_tofrom_user_power7 loop, but when it hits an exception we fall back to the base __copy_tofrom_user loop. - Anton ] Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Make unaligned accesses endian-safe for powerpcRajesh B Prathipati2013-12-301-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The generic put_unaligned/get_unaligned macros were made endian-safe by calling the appropriate endian dependent macros based on the endian type of the powerpc processor. Signed-off-by: Rajesh B Prathipati <rprathip@linux.vnet.ibm.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | | | powerpc: Fix bad stack check in exception entryMichael Neuling2013-12-301-1/+1
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In EXCEPTION_PROLOG_COMMON() we check to see if the stack pointer (r1) is valid when coming from the kernel. If it's not valid, we die but with a nice oops message. Currently we allocate a stack frame (subtract INT_FRAME_SIZE) before we check to see if the stack pointer is negative. Unfortunately, this won't detect a bad stack where r1 is less than INT_FRAME_SIZE. This patch fixes the check to compare the modified r1 with -INT_FRAME_SIZE. With this, bad kernel stack pointers (including NULL pointers) are correctly detected again. Kudos to Paulus for finding this. Signed-off-by: Michael Neuling <mikey@neuling.org> cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | | Merge tag 'fixes-for-linus' of ↵Linus Torvalds2013-12-298-10/+24
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Another smallish batch of fixes, it's been quiet due to the holidays. Nothing controversial here, a handful of things across the board" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: pxa: fix USB gadget driver compilation regression ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy booting ARM: OMAP2+: hwmod_data: fix missing OMAP_INTC_START in irq data ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL ARM: shmobile: r8a7790: fix shdi resource sizes ARM: shmobile: bockw: fixup DMA mask ARM: shmobile: armadillo: Add PWM backlight power supply
| * \ \ \ Merge tag 'omap-for-v3.13/intc-ldp-fix' of ↵Olof Johansson2013-12-2939-169/+269
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes From Tony Lindgren: Fix a regression for wrong interrupt numbers for some devices after the sparse IRQ conversion, fix DRA7 console output for earlyprintk, and fix the LDP LCD backlight when DSS is built into the kernel and not as a loadable module. * tag 'omap-for-v3.13/intc-ldp-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy booting ARM: OMAP2+: hwmod_data: fix missing OMAP_INTC_START in irq data ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL + v3.13-rc5 Signed-off-by: Olof Johansson <olof@lixom.net>
| | * \ \ \ Merge tag 'for-v3.13-rc/hwmod-fixes-b' of ↵Tony Lindgren2013-12-273-6/+6
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into debug-ll-and-ldp-backlight-fix A few OMAP hwmod fixes for v3.13-rc. One patch fixes some IRQ problems with GPMC, RNG, and ISP/IVA MMUs on OMAP2/3. The other fixes some problems with DEBUG_LL on DRA7xx. Basic build, boot, and PM test logs are available here: http://www.pwsan.com/omap/testlogs/hwmod_fixes_b_v3.13-rc/20131226021920/
| | | * | | | ARM: OMAP2+: hwmod_data: fix missing OMAP_INTC_START in irq dataSuman Anna2013-12-262-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 7d7e1eb (ARM: OMAP2+: Prepare for irqs.h removal) and commit ec2c082 (ARM: OMAP2+: Remove hardcoded IRQs and enable SPARSE_IRQ) updated the way interrupts for OMAP2/3 devices are defined in the HWMOD data structures to being an index plus a fixed offset (defined by OMAP_INTC_START). Couple of irqs in the OMAP2/3 hwmod data were misconfigured completely as they were missing this OMAP_INTC_START relative offset. Add this offset back to fix the incorrect irq data for the following modules: OMAP2 - GPMC, RNG OMAP3 - GPMC, ISP MMU & IVA MMU Signed-off-by: Suman Anna <s-anna@ti.com> Fixes: 7d7e1eba7e92 ("ARM: OMAP2+: Prepare for irqs.h removal") Fixes: ec2c0825ca31 ("ARM: OMAP2+: Remove hardcoded IRQs and enable SPARSE_IRQ") Cc: Tony Lindgren <tony@atomide.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
| | | * | | | ARM: DRA7: hwmod: Fix boot crash with DEBUG_LLRajendra Nayak2013-12-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With commit '7dedd34: ARM: OMAP2+: hwmod: Fix a crash in _setup_reset() with DEBUG_LL' we moved from parsing cmdline to identify uart used for earlycon to using the requsite hwmod CONFIG_DEBUG_OMAPxUARTy FLAGS. On DRA7 though, we seem to be missing this flag, and atleast on the DRA7 EVM where we use uart1 for console, boot fails with DEBUG_LL enabled. Reported-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Lokesh Vutla <lokeshvutla@ti.com> # on a different base Signed-off-by: Rajendra Nayak <rnayak@ti.com> Fixes: 7dedd346941d ("ARM: OMAP2+: hwmod: Fix a crash in _setup_reset() with DEBUG_LL") Signed-off-by: Paul Walmsley <paul@pwsan.com>
| | * | | | | ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy bootingTony Lindgren2013-12-271-1/+6
| | | |_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Looks like the LCD panel on LDP has been broken quite a while, and recently got fixed by commit 0b2aa8bed3e1 (gpio: twl4030: Fix regression for twl gpio output). However, there's still an issue left where the panel backlight does not come on if the LCD drivers are built into the kernel. Fix the issue by registering the DPI LCD panel only after the twl4030 GPIO has probed. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> [tony@atomide.com: updated per Tomi's comments] Signed-off-by: Tony Lindgren <tony@atomide.com>
| * | | | | Merge tag 'renesas-fixes2-for-v3.13' of ↵Olof Johansson2013-12-293-3/+10
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes From Simon Horman: Second Round of Renesas ARM based SoC Fixes for v3.13 * r8a7790 (R-Car H2) based Lager board - Correct SHDI resource sizes This bug has been present since sdhi resources were added to the r8a7790 by 8c9b1aa41853272a ("ARM: shmobile: r8a7790: add MMCIF and SDHI DT templates") in v3.11-rc2. * r8a7778 (R-Car M1) based Bock-W board - Correct DMA mask This resolves a regression introduced by 4dcfa60071b3d23f ("ARM: DMA-API: better handing of DMA masks for coherent allocations") in v3.12-rc1. * r8a7740 (R-Mobile A1) based Armadillo board - Add PWM backlight power supply This resolves a regression introduced by 22ceeee16eb8f0d0 ("pwm-backlight: Add power supply support") in v3.12. * tag 'renesas-fixes2-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: r8a7790: fix shdi resource sizes ARM: shmobile: bockw: fixup DMA mask ARM: shmobile: armadillo: Add PWM backlight power supply Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Olof Johansson <olof@lixom.net>
| | * | | | | ARM: shmobile: r8a7790: fix shdi resource sizesBen Dooks2013-12-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The r8a7790.dtsi file has four sdhi nodes which the first two have the wrong resource size for their register block. This causes the sh_modbile_sdhi driver to fail to communicate with card at-all. Change sdhi{0,1} node size from 0x100 to 0x200 to correct these nodes as per Kuninori Morimoto's response to the original patch where all four nodes where changed. sdhi{2,3} are the correct size. This bug has been present since sdhi resources were added to the r8a7790 by 8c9b1aa41853272a ("ARM: shmobile: r8a7790: add MMCIF and SDHI DT templates") in v3.11-rc2. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Tested-by: William Towle <william.towle@codethink.co.uk> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| | * | | | | ARM: shmobile: bockw: fixup DMA maskKuninori Morimoto2013-12-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4dcfa60071b3d23f0181f27d8519f12e37cefbb9 (ARM: DMA-API: better handing of DMA masks for coherent allocations) exchanged DMA mask check method. Below warning will appear without this patch asoc-simple-card asoc-simple-card.0: \ Coherent DMA mask 0xffffffffffffffff is larger than dma_addr_t allows asoc-simple-card asoc-simple-card.0: \ Driver did not use or check the return value from dma_set_coherent_mask()? Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| | * | | | | ARM: shmobile: armadillo: Add PWM backlight power supplyLaurent Pinchart2013-12-191-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 22ceeee16eb8f0d04de3ef43a5174fb30ec18af9 ("pwm-backlight: Add power supply support") added a mandatory power supply for the PWM backlight. Add a fixed 5V regulator to board code with a consumer supply entry for the backlight device. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> (cherry picked from commit ad11cb9a5cf96346f1240995c672cdbb5501785c) Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| * | | | | | ARM: pxa: fix USB gadget driver compilation regressionLinus Walleij2013-12-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 88f718e3fa4d67f3a8dbe79a2f97d722323e4051 "ARM: pxa: delete the custom GPIO header" a compilation error was introduced in the PXA25x gadget driver. An attempt to fix the problem was made in commit b144e4ab1ef130e8bf30bcd3e529b7f35112c503 "usb: gadget: fix pxa25x compilation problems" by explictly stating the driver needs the <mach/hardware.h> header, which solved the compilation for a few boards, such as the pxa255-idp and its defconfig. However the Lubbock board has this special clause in drivers/usb/gadget/pxa25x_udc.c: This include file has an implicit dependency on <mach/irqs.h> having been included before <mach/lubbock.h> was included. Before commit 88f718e3fa4d67f3a8dbe79a2f97d722323e4051 "ARM: pxa: delete the custom GPIO header" this implicit dependency for the pxa25x_udc compile on the Lubbock was satisfied by <linux/gpio.h> implicitly including <mach/gpio.h> which was in turn including <mach/irqs.h>, apart from the earlier added <mach/hardware.h>. Fix this by having the PXA25x <mach/lubbock.h> explicitly include <mach/irqs.h>. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Greg Kroah-Hartmann <gregkh@linuxfoundation.org> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>
* | | | | | | Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2013-12-291-1/+2
|\ \ \ \ \ \ \ | |_|_|/ / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Peter Anvin: "There is a small EFI fix and a big power regression fix in this batch. My queue also had a fix for downing a CPU when there are insufficient number of IRQ vectors available, but I'm holding that one for now due to recent bug reports" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/efi: Don't select EFI from certain special ACPI drivers x86 idle: Repair large-server 50-watt idle-power regression
| * | | | | | x86 idle: Repair large-server 50-watt idle-power regressionLen Brown2013-12-191-1/+2
| | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux 3.10 changed the timing of how thread_info->flags is touched: x86: Use generic idle loop (7d1a941731fabf27e5fb6edbebb79fe856edb4e5) This caused Intel NHM-EX and WSM-EX servers to experience a large number of immediate MONITOR/MWAIT break wakeups, which caused cpuidle to demote from deep C-states to shallow C-states, which caused these platforms to experience a significant increase in idle power. Note that this issue was already present before the commit above, however, it wasn't seen often enough to be noticed in power measurements. Here we extend an errata workaround from the Core2 EX "Dunnington" to extend to NHM-EX and WSM-EX, to prevent these immediate returns from MWAIT, reducing idle power on these platforms. While only acpi_idle ran on Dunnington, intel_idle may also run on these two newer systems. As of today, there are no other models that are known to need this tweak. Link: http://lkml.kernel.org/r/CAJvTdK=%2BaNN66mYpCGgbHGCHhYQAKx-vB0kJSWjVpsNb_hOAtQ@mail.gmail.com Signed-off-by: Len Brown <len.brown@intel.com> Link: http://lkml.kernel.org/r/baff264285f6e585df757d58b17788feabc68918.1387403066.git.len.brown@intel.com Cc: <stable@vger.kernel.org> # 3.12.x, 3.11.x, 3.10.x Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* | | | | | Merge tag 'fixes-for-linus' of ↵Linus Torvalds2013-12-224-23/+54
|\ \ \ \ \ \ | | |/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "Much smaller batch of fixes this week. Biggest one is a revert of an OMAP display change that removed some non-DT pinmux code that was still needed for 3.13 to get DSI displays to work. There's also a fix that resolves some misdescribed GPIO controller resources on shmobile. The rest are mostly smaller fixes, a couple of MAINTAINERS updates, etc" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: Revert "ARM: OMAP2+: Remove legacy mux code for display.c" MAINTAINERS: Add keystone clock drivers MAINTAINERS: Add keystone git tree information ARM: s3c64xx: dt: Fix boot failure due to double clock initialization ARM: shmobile: r8a7790: Fix GPIO resources in DTS irqchip: renesas-intc-irqpin: Fix register bitfield shift calculation ARM: shmobile: lager: phy fixup needs CONFIG_PHYLIB
| * | | | | Merge tag 'renesas-fixes-for-v3.13' of ↵Kevin Hilman2013-12-202-13/+15
| |\ \ \ \ \ | | | |/ / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes From Simon Horman: Renesas ARM based SoC fixes for v3.13 * r8a7790 (R-Car H1) SoC - Correct GPIO resources in DT. This problem has been present since GPIOs were added to the r8a7790 SoC by f98e10c88aa95bf7 ("ARM: shmobile: r8a7790: Add GPIO controller devices to device tree") in v3.12-rc1. * irqchip renesas-intc-irqpin - Correct register bitfield shift calculation This bug has been present since the renesas-intc-irqpin driver was introduced by 443580486e3b9657 ("irqchip: Renesas INTC External IRQ pin driver") in v3.10-rc1 * Lager board - Do not build the phy fixup unless CONFIG_PHYLIB is enabled This problem was introduced by 48c8b96f21817aad * tag 'renesas-fixes-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: r8a7790: Fix GPIO resources in DTS irqchip: renesas-intc-irqpin: Fix register bitfield shift calculation ARM: shmobile: lager: phy fixup needs CONFIG_PHYLIB Signed-off-by: Kevin Hilman <khilman@linaro.org>
| | * | | | ARM: shmobile: r8a7790: Fix GPIO resources in DTSMagnus Damm2013-11-281-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The r8a7790 GPIO resources are currently incorrect. Fix that by making them match the English r8a7790 v0.6 data sheet. Tested with GPIO LED using Lager DT reference. This problem has been present since GPIOs were added to the r8a7790 SoC by f98e10c88aa95bf7 ("ARM: shmobile: r8a7790: Add GPIO controller devices to device tree") in v3.12-rc1. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| | * | | | ARM: shmobile: lager: phy fixup needs CONFIG_PHYLIBSimon Horman2013-11-241-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not build the phy fixup unless CONFIG_PHYLIB is enabled. Other than not being useful it is also not possible to link the code under this condition as phy_register_fixup_for_id(), mdiobus_read() and mdiobus_write() are absent. arch/arm/mach-shmobile/built-in.o: In function `lager_ksz8041_fixup': board-lager.c:(.text+0xb8): undefined reference to `mdiobus_read' board-lager.c:(.text+0xd4): undefined reference to `mdiobus_write' arch/arm/mach-shmobile/built-in.o: In function `lager_init': board-lager.c:(.init.text+0xafc): undefined reference to `phy_register_fixup_for_id' This problem was introduced by 48c8b96f21817aad ("ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup") Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| * | | | | Merge tag 'omap-for-v3.13/display-fix' of ↵Kevin Hilman2013-12-2066-216/+204Star
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes I accidentally removed some mux code for omap4 that I thought was dead code as omap4 has been booting with device tree only since v3.10. Turns out I also removed some display related mux code, so let's revert that except for the dead code parts. * tag 'omap-for-v3.13/display-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (439 commits) Revert "ARM: OMAP2+: Remove legacy mux code for display.c" +Linux 3.13-rc4
| | * | | | | Revert "ARM: OMAP2+: Remove legacy mux code for display.c"Tomi Valkeinen2013-12-181-0/+38
| | | |/ / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e30b06f4d5f000c31a7747a7e7ada78a5fd419a1 (ARM: OMAP2+: Remove legacy mux code for display.c) removed non-DT DSI and HDMI pinmuxing. However, DSI pinmuxing is still needed, and removing that caused DSI displays not to work. This reverts the DSI parts of the commit. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * | | | | ARM: s3c64xx: dt: Fix boot failure due to double clock initializationTomasz Figa2013-12-141-10/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 4178bac ARM: call of_clk_init from default time_init handler added implicit call to of_clk_init() from default time_init callback, but it did not change platforms calling it from other callbacks, despite of not having custom time_init callbacks. This caused double clock initialization on such platforms, leading to boot failures. An example of such platform is mach-s3c64xx. This patch fixes boot failure on s3c64xx by dropping custom init_irq callback, which had a call to of_clk_init() and moving system reset initialization to init_machine callback. This allows us to have clocks initialized properly without a need to have custom init_time or init_irq callbacks. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Olof Johansson <olof@lixom.net>
* | | | | | Merge tag 'arc-fixes-for-3.13-rc5' of ↵Linus Torvalds2013-12-201-1/+7
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fix from Vineet Gupta: "Fix busted syscall table due to unistd header inclusion issue" * tag 'arc-fixes-for-3.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: Allow conditional multiple inclusion of uapi/asm/unistd.h
| * | | | | | ARC: Allow conditional multiple inclusion of uapi/asm/unistd.hVineet Gupta2013-12-191-1/+7
| | |/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 97bc386fc12d "ARC: Add guard macro to uapi/asm/unistd.h" inhibited multiple inclusion of ARCH unistd.h. This however hosed the system since Generic syscall table generator relies on it being included twice, and in lack-of an empty table was emitted by C preprocessor. Fix that by allowing one exception to rule for the special case (just like Xtensa) Suggested-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* | | | | | Merge tag 'arm64-fixes' of ↵Linus Torvalds2013-12-201-20/+18Star
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 ptrace fix from Catalin Marinas. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: ptrace: avoid using HW_BREAKPOINT_EMPTY for disabled events
| * | | | | | arm64: ptrace: avoid using HW_BREAKPOINT_EMPTY for disabled eventsWill Deacon2013-12-191-20/+18Star
| |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8f34a1da35ae ("arm64: ptrace: use HW_BREAKPOINT_EMPTY type for disabled breakpoints") fixed an issue with GDB trying to zero breakpoint control registers. The problem there is that the arch hw_breakpoint code will attempt to create a (disabled), execute breakpoint of length 0. This will fail validation and report unexpected failure to GDB. To avoid this, we treated disabled breakpoints as HW_BREAKPOINT_EMPTY, but that seems to have broken with recent kernels, causing watchpoints to be treated as TYPE_INST in the core code and returning ENOSPC for any further breakpoints. This patch fixes the problem by prioritising the `enable' field of the breakpoint: if it is cleared, we simply update the perf_event_attr to indicate that the thing is disabled and don't bother changing either the type or the length. This reinforces the behaviour that the breakpoint control register is essentially read-only apart from the enable bit when disabling a breakpoint. Cc: <stable@vger.kernel.org> Reported-by: Aaron Liu <liucy214@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* | | | | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2013-12-2013-62/+112
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM fixes from Paolo Bonzini: "The PPC folks had a large amount of changes queued for 3.13, and now they are fixing the bugs" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: PPC: Book3S HV: Don't drop low-order page address bits powerpc: book3s: kvm: Don't abuse host r2 in exit path powerpc/kvm/booke: Fix build break due to stack frame size warning KVM: PPC: Book3S: PR: Enable interrupts earlier KVM: PPC: Book3S: PR: Make svcpu -> vcpu store preempt savvy KVM: PPC: Book3S: PR: Export kvmppc_copy_to|from_svcpu KVM: PPC: Book3S: PR: Don't clobber our exit handler id powerpc: kvm: fix rare but potential deadlock scene KVM: PPC: Book3S HV: Take SRCU read lock around kvm_read_guest() call KVM: PPC: Book3S HV: Make tbacct_lock irq-safe KVM: PPC: Book3S HV: Refine barriers in guest entry/exit KVM: PPC: Book3S HV: Fix physical address calculations
| * \ \ \ \ \ Merge tag 'signed-for-3.13' of git://github.com/agraf/linux-2.6 into kvm-masterPaolo Bonzini2013-12-2013-62/+112
| |\ \ \ \ \ \ | | |/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch queue for 3.13 - 2013-12-18 This fixes some grave issues we've only found after 3.13-rc1: - Make the modularized HV/PR book3s kvm work well as modules - Fix some race conditions - Fix compilation with certain compilers (booke) - Fix THP for book3s_hv - Fix preemption for book3s_pr Alexander Graf (4): KVM: PPC: Book3S: PR: Don't clobber our exit handler id KVM: PPC: Book3S: PR: Export kvmppc_copy_to|from_svcpu KVM: PPC: Book3S: PR: Make svcpu -> vcpu store preempt savvy KVM: PPC: Book3S: PR: Enable interrupts earlier Aneesh Kumar K.V (1): powerpc: book3s: kvm: Don't abuse host r2 in exit path Paul Mackerras (5): KVM: PPC: Book3S HV: Fix physical address calculations KVM: PPC: Book3S HV: Refine barriers in guest entry/exit KVM: PPC: Book3S HV: Make tbacct_lock irq-safe KVM: PPC: Book3S HV: Take SRCU read lock around kvm_read_guest() call KVM: PPC: Book3S HV: Don't drop low-order page address bits Scott Wood (1): powerpc/kvm/booke: Fix build break due to stack frame size warning pingfan liu (1): powerpc: kvm: fix rare but potential deadlock scene
| | * | | | | KVM: PPC: Book3S HV: Don't drop low-order page address bitsPaul Mackerras2013-12-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit caaa4c804fae ("KVM: PPC: Book3S HV: Fix physical address calculations") unfortunately resulted in some low-order address bits getting dropped in the case where the guest is creating a 4k HPTE and the host page size is 64k. By getting the low-order bits from hva rather than gpa we miss out on bits 12 - 15 in this case, since hva is at page granularity. This puts the missing bits back in. Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
| | * | | | | powerpc: book3s: kvm: Don't abuse host r2 in exit pathAneesh Kumar K.V2013-12-183-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't use PACATOC for PR. Avoid updating HOST_R2 with PR KVM mode when both HV and PR are enabled in the kernel. Without this we get the below crash (qemu) Unable to handle kernel paging request for data at address 0xffffffffffff8310 Faulting instruction address: 0xc00000000001d5a4 cpu 0x2: Vector: 300 (Data Access) at [c0000001dc53aef0] pc: c00000000001d5a4: .vtime_delta.isra.1+0x34/0x1d0 lr: c00000000001d760: .vtime_account_system+0x20/0x60 sp: c0000001dc53b170 msr: 8000000000009032 dar: ffffffffffff8310 dsisr: 40000000 current = 0xc0000001d76c62d0 paca = 0xc00000000fef1100 softe: 0 irq_happened: 0x01 pid = 4472, comm = qemu-system-ppc enter ? for help [c0000001dc53b200] c00000000001d760 .vtime_account_system+0x20/0x60 [c0000001dc53b290] c00000000008d050 .kvmppc_handle_exit_pr+0x60/0xa50 [c0000001dc53b340] c00000000008f51c kvm_start_lightweight+0xb4/0xc4 [c0000001dc53b510] c00000000008cdf0 .kvmppc_vcpu_run_pr+0x150/0x2e0 [c0000001dc53b9e0] c00000000008341c .kvmppc_vcpu_run+0x2c/0x40 [c0000001dc53ba50] c000000000080af4 .kvm_arch_vcpu_ioctl_run+0x54/0x1b0 [c0000001dc53bae0] c00000000007b4c8 .kvm_vcpu_ioctl+0x478/0x730 [c0000001dc53bca0] c0000000002140cc .do_vfs_ioctl+0x4ac/0x770 [c0000001dc53bd80] c0000000002143e8 .SyS_ioctl+0x58/0xb0 [c0000001dc53be30] c000000000009e58 syscall_exit+0x0/0x98 Signed-off-by: Alexander Graf <agraf@suse.de>
| | * | | | | powerpc/kvm/booke: Fix build break due to stack frame size warningScott Wood2013-12-113-23/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ce11e48b7fdd256ec68b932a89b397a790566031 ("KVM: PPC: E500: Add userspace debug stub support") added "struct thread_struct" to the stack of kvmppc_vcpu_run(). thread_struct is 1152 bytes on my build, compared to 48 bytes for the recently-introduced "struct debug_reg". Use the latter instead. This fixes the following error: cc1: warnings being treated as errors arch/powerpc/kvm/booke.c: In function 'kvmppc_vcpu_run': arch/powerpc/kvm/booke.c:760:1: error: the frame size of 1424 bytes is larger than 1024 bytes make[2]: *** [arch/powerpc/kvm/booke.o] Error 1 make[1]: *** [arch/powerpc/kvm] Error 2 make[1]: *** Waiting for unfinished jobs.... Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| | * | | | | KVM: PPC: Book3S: PR: Enable interrupts earlierAlexander Graf2013-12-092-10/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the svcpu sync is interrupt aware we can enable interrupts earlier in the exit code path again, moving 32bit and 64bit closer together. While at it, document the fact that we're always executing the exit path with interrupts enabled so that the next person doesn't trap over this. Signed-off-by: Alexander Graf <agraf@suse.de>
| | * | | | | KVM: PPC: Book3S: PR: Make svcpu -> vcpu store preempt savvyAlexander Graf2013-12-092-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As soon as we get back to our "highmem" handler in virtual address space we may get preempted. Today the reason we can get preempted is that we replay interrupts and all the lazy logic thinks we have interrupts enabled. However, it's not hard to make the code interruptible and that way we can enable and handle interrupts even earlier. This fixes random guest crashes that happened with CONFIG_PREEMPT=y for me. Signed-off-by: Alexander Graf <agraf@suse.de>