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* arm, arm64: don't include blk_types.h in <asm/io.h>Christoph Hellwig2016-11-011-1/+0
| | | | | | | | No need for it - we only use struct bio_vec in prototypes and already have forward declarations for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2016-10-141-5/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more misc uaccess and vfs updates from Al Viro: "The rest of the stuff from -next (more uaccess work) + assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: score: traps: Add missing include file to fix build error fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths fs/super.c: fix race between freeze_super() and thaw_super() overlayfs: Fix setting IOP_XATTR flag iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector() blackfin: no access_ok() for __copy_{to,from}_user() arm64: don't zero in __copy_from_user{,_inatomic} arm: don't zero in __copy_from_user_inatomic()/__copy_from_user() arc: don't leak bits of kernel stack into coredump alpha: get rid of tail-zeroing in __copy_user()
| * Merge branch 'work.uaccess' into for-linusAl Viro2016-10-141-5/+6
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| | * arm: don't zero in __copy_from_user_inatomic()/__copy_from_user()Al Viro2016-09-151-5/+6
| | | | | | | | | | | | | | | | | | adjust copy_from_user(), obviously Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'kbuild' of ↵Linus Torvalds2016-10-141-0/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild updates from Michal Marek: - EXPORT_SYMBOL for asm source by Al Viro. This does bring a regression, because genksyms no longer generates checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is working on a patch to fix this. Plus, we are talking about functions like strcpy(), which rarely change prototypes. - Fixes for PPC fallout of the above by Stephen Rothwell and Nick Piggin - fixdep speedup by Alexey Dobriyan. - preparatory work by Nick Piggin to allow architectures to build with -ffunction-sections, -fdata-sections and --gc-sections - CONFIG_THIN_ARCHIVES support by Stephen Rothwell - fix for filenames with colons in the initramfs source by me. * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits) initramfs: Escape colons in depfile ppc: there is no clear_pages to export powerpc/64: whitelist unresolved modversions CRCs kbuild: -ffunction-sections fix for archs with conflicting sections kbuild: add arch specific post-link Makefile kbuild: allow archs to select link dead code/data elimination kbuild: allow architectures to use thin archives instead of ld -r kbuild: Regenerate genksyms lexer kbuild: genksyms fix for typeof handling fixdep: faster CONFIG_ search ia64: move exports to definitions sparc32: debride memcpy.S a bit [sparc] unify 32bit and 64bit string.h sparc: move exports to definitions ppc: move exports to definitions arm: move exports to definitions s390: move exports to definitions m68k: move exports to definitions alpha: move exports to actual definitions x86: move exports to actual definitions ...
| * | | arm: move exports to definitionsAl Viro2016-08-071-0/+1
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | treewide: remove redundant #include <linux/kconfig.h>Masahiro Yamada2016-10-111-1/+0
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel source files need not include <linux/kconfig.h> explicitly because the top Makefile forces to include it with: -include $(srctree)/include/linux/kconfig.h This commit removes explicit includes except the following: * arch/s390/include/asm/facilities_src.h * tools/testing/radix-tree/linux/kernel.h These two are used for host programs. Link: http://lkml.kernel.org/r/1473656164-11929-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2016-10-071-2/+3
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge updates from Andrew Morton: - fsnotify updates - ocfs2 updates - all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits) console: don't prefer first registered if DT specifies stdout-path cred: simpler, 1D supplementary groups CREDITS: update Pavel's information, add GPG key, remove snail mail address mailmap: add Johan Hovold .gitattributes: set git diff driver for C source code files uprobes: remove function declarations from arch/{mips,s390} spelling.txt: "modeled" is spelt correctly nmi_backtrace: generate one-line reports for idle cpus arch/tile: adopt the new nmi_backtrace framework nmi_backtrace: do a local dump_stack() instead of a self-NMI nmi_backtrace: add more trigger_*_cpu_backtrace() methods min/max: remove sparse warnings when they're nested Documentation/filesystems/proc.txt: add more description for maps/smaps mm, proc: fix region lost in /proc/self/smaps proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self proc: add LSM hook checks to /proc/<tid>/timerslack_ns proc: relax /proc/<tid>/timerslack_ns capability requirements meminfo: break apart a very long seq_printf with #ifdefs seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char proc: faster /proc/*/status ...
| * | | nmi_backtrace: add more trigger_*_cpu_backtrace() methodsChris Metcalf2016-10-071-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "improvements to the nmi_backtrace code" v9. This patch series modifies the trigger_xxx_backtrace() NMI-based remote backtracing code to make it more flexible, and makes a few small improvements along the way. The motivation comes from the task isolation code, where there are scenarios where we want to be able to diagnose a case where some cpu is about to interrupt a task-isolated cpu. It can be helpful to see both where the interrupting cpu is, and also an approximation of where the cpu that is being interrupted is. The nmi_backtrace framework allows us to discover the stack of the interrupted cpu. I've tested that the change works as desired on tile, and build-tested x86, arm, mips, and sparc64. For x86 I confirmed that the generic cpuidle stuff as well as the architecture-specific routines are in the new cpuidle section. For arm, mips, and sparc I just build-tested it and made sure the generic cpuidle routines were in the new cpuidle section, but I didn't attempt to figure out which the platform-specific idle routines might be. That might be more usefully done by someone with platform experience in follow-up patches. This patch (of 4): Currently you can only request a backtrace of either all cpus, or all cpus but yourself. It can also be helpful to request a remote backtrace of a single cpu, and since we want that, the logical extension is to support a cpumask as the underlying primitive. This change modifies the existing lib/nmi_backtrace.c code to take a cpumask as its basic primitive, and modifies the linux/nmi.h code to use the new "cpumask" method instead. The existing clients of nmi_backtrace (arm and x86) are converted to using the new cpumask approach in this change. The other users of the backtracing API (sparc64 and mips) are converted to use the cpumask approach rather than the all/allbutself approach. The mips code ignored the "include_self" boolean but with this change it will now also dump a local backtrace if requested. Link: http://lkml.kernel.org/r/1472487169-14923-2-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge tag 'armsoc-soc' of ↵Linus Torvalds2016-10-072-18/+147
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Arnd Bergmann: "These are updates for platform specific code on 32-bit ARM machines, essentially anything that can not (yet) be expressed using DT files. Noteworthy changes include: - We get support for running in big-endian mode on two platforms: sunxi (Allwinner) and s3c24xx (old Samsung). - The recently added Uniphier platform now uses standard PSCI methods for SMP booting and we remove support for old bootloader versions that did not support it yet. - In sunxi, we gain support for the "Nextthing GR8" SoC, which is a close relative of the Allwinner A13 and R8 chips. - PXA completes its move over to the generic dmaengine framework and removes its old private API - mach-bcm gains support for BCM47189/BCM53573, their first ARM SoC with integrated 802.11ac wireless networking" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) ARM: imx legacy: pca100: move peripheral initialization to .init_late ARM: imx legacy: mx27ads: move peripheral initialization to .init_late ARM: imx legacy: mx21ads: move peripheral initialization to .init_late ARM: imx legacy: pcm043: move peripheral initialization to .init_late ARM: imx legacy: mx35-3ds: move peripheral initialization to .init_late ARM: imx legacy: mx27-3ds: move peripheral initialization to .init_late ARM: imx legacy: imx27-visstrim-m10: move peripheral initialization to .init_late ARM: imx legacy: vpr200: move peripheral initialization to .init_late ARM: imx legacy: mx31moboard: move peripheral initialization to .init_late ARM: imx legacy: armadillo5x0: move peripheral initialization to .init_late ARM: imx legacy: qong: move peripheral initialization to .init_late ARM: imx legacy: mx31-3ds: move peripheral initialization to .init_late ARM: imx legacy: pcm037: move peripheral initialization to .init_late ARM: imx legacy: mx31lilly: move peripheral initialization to .init_late ARM: imx legacy: mx31ads: move peripheral initialization to .init_late ARM: imx legacy: mx31lite: move peripheral initialization to .init_late ARM: imx legacy: kzm: move peripheral initialization to .init_late MAINTAINERS: update list of Oxnas maintainers ARM: orion5x: remove extraneous NO_IRQ ARM: orion: simplify orion_ge00_switch_init ...
| * | | Merge tag 'uniphier-soc-v4.9' of ↵Arnd Bergmann2016-09-201-18/+2
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier into next/soc Pull "UniPhier ARM SoC updates for v4.9" from Masahiro Yamada: * Remove unneeded SMP code * tag 'uniphier-soc-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier: ARM: uniphier: remove SoC-specific SMP code
| | * | | ARM: uniphier: remove SoC-specific SMP codeMasahiro Yamada2016-08-291-18/+2
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | The UniPhier architecture (32bit) switched over to PSCI. Remove the SoC-specific SMP operations. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| * | | Merge tag 'arm-soc/for-4.9/soc' of http://github.com/Broadcom/stblinux into ↵Arnd Bergmann2016-09-151-0/+145
| |\ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | next/soc Pull "Broadcom soc changes for 4.9" from Florian Fainelli: This pull request contains Broadcom ARM-based SoC changes for 4.9, please pull the following: - Rafal adds preliminary support for the new BCM53573 Wi-Fi SoC based on a single core Cortex A7 and re-using a bunch of iProc peripherals - Florian adds support for earlyprintk on Broadcom STB/CM ARM-based chips by reading the chip family_id value from a known location and deriving the UART based address * tag 'arm-soc/for-4.9/soc' of http://github.com/Broadcom/stblinux: ARM: BCM53573: Initial support for Broadcom BCM53573 SoCs ARM: brcmstb: Add earlyprintk support using run-time checks
| | * | ARM: brcmstb: Add earlyprintk support using run-time checksFlorian Fainelli2016-08-081-0/+145
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SUN_TOP_CTRL_FAMILY_ID register is at a fixed absolute address for all of our supported chips, so utilize its value to determine what the UARTA base address should be based on the value we read. Since the code is called both during decompressor when the MMU is off, and after the MMU has been turned on in the kernel, and we want to do the lookup only once, we use the same technique as tegra.S and have a shared storage location between the decompressor and the kernel. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
* | | Merge tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2016-10-069-70/+151
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Radim Krčmář: "All architectures: - move `make kvmconfig` stubs from x86 - use 64 bits for debugfs stats ARM: - Important fixes for not using an in-kernel irqchip - handle SError exceptions and present them to guests if appropriate - proxying of GICV access at EL2 if guest mappings are unsafe - GICv3 on AArch32 on ARMv8 - preparations for GICv3 save/restore, including ABI docs - cleanups and a bit of optimizations MIPS: - A couple of fixes in preparation for supporting MIPS EVA host kernels - MIPS SMP host & TLB invalidation fixes PPC: - Fix the bug which caused guests to falsely report lockups - other minor fixes - a small optimization s390: - Lazy enablement of runtime instrumentation - up to 255 CPUs for nested guests - rework of machine check deliver - cleanups and fixes x86: - IOMMU part of AMD's AVIC for vmexit-less interrupt delivery - Hyper-V TSC page - per-vcpu tsc_offset in debugfs - accelerated INS/OUTS in nVMX - cleanups and fixes" * tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (140 commits) KVM: MIPS: Drop dubious EntryHi optimisation KVM: MIPS: Invalidate TLB by regenerating ASIDs KVM: MIPS: Split kernel/user ASID regeneration KVM: MIPS: Drop other CPU ASIDs on guest MMU changes KVM: arm/arm64: vgic: Don't flush/sync without a working vgic KVM: arm64: Require in-kernel irqchip for PMU support KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register KVM: PPC: Book3S PR: Support 64kB page size on POWER8E and POWER8NVL KVM: PPC: Book3S: Remove duplicate setting of the B field in tlbie KVM: PPC: BookE: Fix a sanity check KVM: PPC: Book3S HV: Take out virtual core piggybacking code KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread ARM: gic-v3: Work around definition of gic_write_bpr1 KVM: nVMX: Fix the NMI IDT-vectoring handling KVM: VMX: Enable MSR-BASED TPR shadow even if APICv is inactive KVM: nVMX: Fix reload apic access page warning kvmconfig: add virtio-gpu to config fragment config: move x86 kvm_guest.config to a common location arm64: KVM: Remove duplicating init code for setting VMID ARM: KVM: Support vgic-v3 ...
| * \ \ Merge tag 'kvm-arm-for-v4.9' of ↵Radim Krčmář2016-09-299-63/+153
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into next KVM/ARM Changes for v4.9 - Various cleanups and removal of redundant code - Two important fixes for not using an in-kernel irqchip - A bit of optimizations - Handle SError exceptions and present them to guests if appropriate - Proxying of GICV access at EL2 if guest mappings are unsafe - GICv3 on AArch32 on ARMv8 - Preparations for GICv3 save/restore, including ABI docs
| | * | | ARM: gic-v3: Work around definition of gic_write_bpr1Marc Zyngier2016-09-231-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new accessor for gic_write_bpr1 is added to arch_gicv3.h in 4.9, whilst the CP15 accessors are redifined in a separate branch. This leads to a horrible clash, where the new accessor ends up with a crap "asm volatile" definition. Work around this by carrying our own definition of gic_write_bpr1, creating a small conflict which will be obvious to resolve. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| | * | | ARM: KVM: Support vgic-v3Vladimir Murzin2016-09-224-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch allows to build and use vgic-v3 in 32-bit mode. Unfortunately, it can not be split in several steps without extra stubs to keep patches independent and bisectable. For instance, virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre to be already defined. It is how support has been done: * handle SGI requests from the guest * report configured SRE on access to GICv3 cpu interface from the guest * required vgic-v3 macros are provided via uapi.h * static keys are used to select GIC backend * to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with the static inlines Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | ARM: gic-v3: Introduce 32-to-64-bit mappings for GICv3 cpu registersVladimir Murzin2016-09-221-0/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vgic-v3 save/restore routines are written in such way that they map arm64 system register naming nicely, but it does not fit to arm world. To keep virt/kvm/arm/hyp/vgic-v3-sr.c untouched we create a mapping with a function for each register mapping the 32-bit to the 64-bit accessors. Please, note that 64-bit wide ICH_LR is split in two 32-bit halves (ICH_LR and ICH_LRC) accessed independently. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | ARM: Move system register accessors to asm/cp15.hVladimir Murzin2016-09-223-30/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Headers linux/irqchip/arm-gic.v3.h and arch/arm/include/asm/kvm_hyp.h are included in virt/kvm/arm/hyp/vgic-v3-sr.c and both define macros called __ACCESS_CP15 and __ACCESS_CP15_64 which obviously creates a conflict. These macros were introduced independently for GIC and KVM and, in fact, do the same thing. As an option we could add prefixes to KVM and GIC version of macros so they won't clash, but it'd introduce code duplication. Alternatively, we could keep macro in, say, GIC header and include it in KVM one (or vice versa), but such dependency would not look nicer. So we follow arm64 way (it handles this via sysreg.h) and move only single set of macros to asm/cp15.h Cc: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | ARM: Introduce MPIDR_LEVEL_SHIFT macroVladimir Murzin2016-09-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vgic-v3 driver uses architecture specific MPIDR_LEVEL_SHIFT macro to encode the affinity in a form compatible with ICC_SGI* registers. Unfortunately, that macro is missing on ARM, so let's add it. Cc: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | arm: KVM: Allow an exit code to be tagged with a Virtual AbortMarc Zyngier2016-09-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An asynchronous abort can also be triggered whilst running at EL2. But instead of making that a new error code, we need to communicate it to the rest of KVM together with the exit reason. So let's hijack a single bit that allows the exception code to be tagged with a "pending Abort" information. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | arm: KVM: Add Virtual Abort injection helperMarc Zyngier2016-09-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we're able to context switch the HCR.VA bit, let's introduce a helper that injects an Abort into a vcpu. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | arm: KVM: Use common AArch32 conditional execution codeMarc Zyngier2016-09-081-7/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the bit of glue and const-ification that is required to use the code inherited from the arm64 port, and move over to it. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| | * | | arm/kvm: excise redundant cache maintenanceMark Rutland2016-09-081-26/+2
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When modifying Stage-2 page tables, we perform cache maintenance to account for non-coherent page table walks. However, this is unnecessary, as page table walks are guaranteed to be coherent in the presence of the virtualization extensions. Per ARM DDI 0406C.c, section B1.7 ("The Virtualization Extensions"), the virtualization extensions mandate the multiprocessing extensions. Per ARM DDI 0406C.c, section B3.10.1 ("General TLB maintenance requirements"), as described in the sub-section titled "TLB maintenance operations and the memory order model", this maintenance is not required in the presence of the multiprocessing extensions. Hence, we need not perform this cache maintenance when modifying Stage-2 entries. This patch removes the logic for performing the redundant maintenance. To ensure visibility and ordering of updates, a dsb(ishst) that was otherwise implicit in the maintenance is folded into kvm_set_pmd() and kvm_set_pte(). Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kvmarm@lists.cs.columbia.edu Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| * / / KVM: Add provisioning for ulong vm stats and u64 vcpu statsSuraj Jitindar Singh2016-09-081-6/+6
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vms and vcpus have statistics associated with them which can be viewed within the debugfs. Currently it is assumed within the vcpu_stat_get() and vm_stat_get() functions that all of these statistics are represented as u32s, however the next patch adds some u64 vcpu statistics. Change all vcpu statistics to u64 and modify vcpu_stat_get() accordingly. Since vcpu statistics are per vcpu, they will only be updated by a single vcpu at a time so this shouldn't present a problem on 32-bit machines which can't atomically increment 64-bit numbers. However vm statistics could potentially be updated by multiple vcpus from that vm at a time. To avoid the overhead of atomics make all vm statistics ulong such that they are 64-bit on 64-bit systems where they can be atomically incremented and are 32-bit on 32-bit systems which may not be able to atomically increment 64-bit numbers. Modify vm_stat_get() to expect ulongs. Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com> Reviewed-by: David Matlack <dmatlack@google.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
* | | Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2016-10-0612-46/+126
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - Correct ARMs dma-mapping to use the correct printk format strings. - Avoid defining OBJCOPYFLAGS globally which upsets lkdtm rodata testing. - Cleanups to ARMs asm/memory.h include. - L2 cache cleanups. - Allow flat nommu binaries to be executed on ARM MMU systems. - Kernel hardening - add more read-only after init annotations, including making some kernel vdso variables const. - Ensure AMBA primecell clocks are appropriately defaulted. - ARM breakpoint cleanup. - Various StrongARM 11x0 and companion chip (SA1111) updates to bring this legacy platform to use more modern APIs for (eg) GPIOs and interrupts, which will allow us in the future to reduce some of the board-level driver clutter and elimate function callbacks into board code via platform data. There still appears to be interest in these platforms! - Remove the now redundant secure_flush_area() API. - Module PLT relocation optimisations. Ard says: This series of 4 patches optimizes the ARM PLT generation code that is invoked at module load time, to get rid of the O(n^2) algorithm that results in pathological load times of 10 seconds or more for large modules on certain STB platforms. - ARMv7M cache maintanence support. - L2 cache PMU support * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (35 commits) ARM: sa1111: provide to_sa1111_device() macro ARM: sa1111: add sa1111_get_irq() ARM: sa1111: clean up duplication in IRQ chip implementation ARM: sa1111: implement a gpio_chip for SA1111 GPIOs ARM: sa1111: move irq cleanup to separate function ARM: sa1111: use devm_clk_get() ARM: sa1111: use devm_kzalloc() ARM: sa1111: ensure we only touch RAB bus type devices when removing ARM: 8611/1: l2x0: add PMU support ARM: 8610/1: V7M: Add dsb before jumping in handler mode ARM: 8609/1: V7M: Add support for the Cortex-M7 processor ARM: 8608/1: V7M: Indirect proc_info construction for V7M CPUs ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support. ARM: 8606/1: V7M: introduce cache operations ARM: 8605/1: V7M: fix notrace variant of save_and_disable_irqs ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype() ARM: 8603/1: V7M: Add addresses for mem-mapped V7M cache operations ARM: 8602/1: factor out CSSELR/CCSIDR operations that use cp15 directly ARM: kernel: avoid brute force search on PLT generation ARM: kernel: sort relocation sections before allocating PLTs ...
| * \ \ Merge branch 'devel-stable' into for-linusRussell King2016-10-061-4/+2
| |\ \ \
| | * | | ARM: kernel: merge core and init PLTsArd Biesheuvel2016-08-301-4/+2
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PLT code uses a separate .init.plt section to allocate PLT entries for jump and call instructions in __init code. However, even for fairly sizable modules like mac80211.ko, we only end up with a couple of PLT entries in the .init section, and so we can simplify the code significantly by emitting all PLT entries into the same section. Tested-by: Jongsung Kim <neidhard.kim@lge.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
| * | | Merge branches 'misc' and 'sa1111-base' into for-linusRussell King2016-10-064-3/+14
| |\ \ \
| | * | | ARM: sa1111: provide to_sa1111_device() macroRussell King2016-09-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide a nicer to_sa1111_device macro to convert a struct device to a sa1111_dev. We will need this for drivers when converting them to dev_pm_ops, or removing shutdown methods. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| | * | | ARM: sa1111: add sa1111_get_irq()Russell King2016-09-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a helper function to get the irq number for a device. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * | | | ARM: 8611/1: l2x0: add PMU supportMark Rutland2016-09-061-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The L2C-220 (AKA L220) and L2C-310 (AKA PL310) cache controllers feature a Performance Monitoring Unit (PMU), which can be useful for tuning and/or debugging. This hardware is always present and the relevant registers are accessible to non-secure accesses. Thus, no special firmware interface is necessary. This patch adds support for the PMU, plugging into the usual perf infrastructure. The overflow interrupt is not always available (e.g. on RealView PBX A9 it is not wired up at all), and the hardware counters saturate, so the driver does not make use of this. Instead, the driver periodically polls and reset counters as required to avoid losing events due to saturation. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Tested-by: Kim Phillips <kim.phillips@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.Jonathan Austin2016-09-061-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does the plumbing required to invoke the V7M cache code added in earlier patches in this series, although there is no users for that yet. In order to honour the I/D cache disable config options, this patch changes the mechanism by which the CCR is set on boot, to be more like V7A/R. Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8605/1: V7M: fix notrace variant of save_and_disable_irqsVladimir Murzin2016-09-061-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8e43a905 "ARM: 7325/1: fix v7 boot with lockdep enabled" introduced notrace variant of save_and_disable_irqs to balance notrace variant of restore_irqs; however V7M case has been missed. It was not noticed because cache-v7.S the only place where notrace variant is used. So fix it, since we are going to extend V7 cache routines to handle V7M case too. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype()Jonathan Austin2016-09-062-5/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the addition of caches to the V7M Architecture a new Cache Type Register (CTR) is defined at 0xE000ED7C. This register serves the same purpose as the V7A/R version and accessed via the read_cpuid_cachetype. Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8603/1: V7M: Add addresses for mem-mapped V7M cache operationsJonathan Austin2016-09-061-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | V7M implements cache operations similarly to V7A/R, however all operations are performed via memory-mapped IO instead of co-processor operations. This patch adds register definitions relevant to the V7M ARM architecture's cache architecture. Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8602/1: factor out CSSELR/CCSIDR operations that use cp15 directlyJonathan Austin2016-09-061-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we use raw cp15 operations to access the cache setup data. This patch abstracts the CSSELR and CCSIDR accessors out to a header so that the implementation for them can be switched out as we do with other cpu/cachetype operations. Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Tested-by: Andras Szemzo <sza@esh.hu> Tested-by: Joachim Eastwood <manabian@gmail.com> Tested-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8601/1: Remove unused secure_flush_area APIAndy Gross2016-08-261-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the unused secure_flush_area function. The only consumer of this function has moved to using the streaming DMA APIs. Signed-off-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: sa1100: move StrongARM CPU ID checks to cputype.hRussell King2016-08-231-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the StrongARM CPU ID checks out of the platform's hardware.h file into asm/cputype.h Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| * | | | ARM: 8598/1: remove traces of perf_ops_bpMark Rutland2016-08-231-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even though perf_ops_bp was removed/renamed back in commit b0a873ebbf87bf38 ("perf: Register PMU implementations"), as part of v2.6.37, its definition still lives on in some arch headers. This patch removes the vestigal definition from arm. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8594/1: enable binfmt_flat on systems with an MMUNicolas Pitre2016-08-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the generic changes are in place, this can be enabled on ARM with the use of proper user space accessors in the flat_get_addr_from_rp() and flat_put_addr_at_rp() handlers as rp actually holds a user space address. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 8589/1: asm/memory.h: remove dead definitionsNicolas Pitre2016-08-121-12/+3
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The last ad-hoc __phys_to_virt definition was removed in commit fd0053c9 ("ARM: realview: remove sparsemem hack"). Therefore we can remove the unneeded definitions and unduplicate the virt_to_pfn macro from asm/memory.h. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2016-10-061-1/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fix from Russell King: "A 5% error in delay calculation was introduced during the last merge window, which had gone un-noticed until yesterday" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: fix delays
| * | | | ARM: fix delaysRussell King2016-10-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 215e362dafed ("ARM: 8306/1: loop_udelay: remove bogomips value limitation") tried to increase the bogomips limitation, but in doing so messed up udelay such that it always gives about a 5% error in the delay, even if we use a timer. The calculation is: loops = UDELAY_MULT * us_delay * ticks_per_jiffy >> UDELAY_SHIFT Originally, UDELAY_MULT was ((UL(2199023) * HZ) >> 11) and UDELAY_SHIFT 30. Assuming HZ=100, us_delay of 1000 and ticks_per_jiffy of 1660000 (eg, 166MHz timer, 1ms delay) this would calculate: ((UL(2199023) * HZ) >> 11) * 1000 * 1660000 >> 30 => 165999 With the new values of 2047 * HZ + 483648 * HZ / 1000000 and 31, we get: (2047 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31 => 158269 which is incorrect. This is due to a typo - correcting it gives: (2147 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31 => 165999 i.o.w, the original value. Fixes: 215e362dafed ("ARM: 8306/1: loop_udelay: remove bogomips value limitation") Cc: <stable@vger.kernel.org> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
* | | | | Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2016-10-031-0/+6
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The irq departement proudly presents: - A rework of the core infrastructure to optimally spread interrupt for multiqueue devices. The first version was a bit naive and failed to take thread siblings and other details into account. Developed in cooperation with Christoph and Keith. - Proper delegation of softirqs to ksoftirqd, so if ksoftirqd is active then no further softirq processsing on interrupt return happens. Otherwise we try to delegate and still run another batch of network packets in the irq return path, which then tries to delegate to ksoftirqd ..... - A proper machine parseable sysfs based alternative for /proc/interrupts. - ACPI support for the GICV3-ITS and ARM interrupt remapping - Two new irq chips from the ARM SoC zoo: STM32-EXTI and MVEBU-PIC - A new irq chip for the JCore (SuperH) - The usual pile of small fixlets in core and irqchip drivers" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) softirq: Let ksoftirqd do its job genirq: Make function __irq_do_set_handler() static ARM/dts: Add EXTI controller node to stm32f429 ARM/STM32: Select external interrupts controller drivers/irqchip: Add STM32 external interrupts support Documentation/dt-bindings: Document STM32 EXTI controller bindings irqchip/mips-gic: Use for_each_set_bit to iterate over local IRQs pci/msi: Retrieve affinity for a vector genirq/affinity: Remove old irq spread infrastructure genirq/msi: Switch to new irq spreading infrastructure genirq/affinity: Provide smarter irq spreading infrastructure genirq/msi: Add cpumask allocation to alloc_msi_entry genirq: Expose interrupt information through sysfs irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI irqchip/gicv3-its: Probe ITS in the ACPI way irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI irqchip/gicv3-its: Cleanup for ITS domain initialization PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table ACPI: Add new IORT functions to support MSI domain handling ...
| * \ \ \ \ Merge branch 'irq/urgent' into irq/coreThomas Gleixner2016-09-202-0/+2
| |\ \ \ \ \ | | | |_|/ / | | |/| | | | | | | | | Merge urgent fixes so pending patches for 4.9 can be applied.
| * | | | | irqchip/gic-v3: Reset BPR during initializationDaniel Thompson2016-09-121-0/+6
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when running on FVP, CPU 0 boots up with its BPR changed from the reset value. This renders it impossible to (preemptively) prioritize interrupts on CPU 0. This is harmless on normal systems since Linux typically does not support preemptive interrupts. It does however cause problems in systems with additional changes (such as patches for NMI simulation). Many thanks to Andrew Thoelke for suggesting the BPR as having the potential to harm preemption. Suggested-by: Andrew Thoelke <andrew.thoelke@arm.com> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
* | | | | Merge tag 'arm64-upstream' of ↵Linus Torvalds2016-10-031-0/+8
|\ \ \ \ \ | |_|_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "It's a bit all over the place this time with no "killer feature" to speak of. Support for mismatched cache line sizes should help people seeing whacky JIT failures on some SoCs, and the big.LITTLE perf updates have been a long time coming, but a lot of the changes here are cleanups. We stray outside arch/arm64 in a few areas: the arch/arm/ arch_timer workaround is acked by Russell, the DT/OF bits are acked by Rob, the arch_timer clocksource changes acked by Marc, CPU hotplug by tglx and jump_label by Peter (all CC'd). Summary: - Support for execute-only page permissions - Support for hibernate and DEBUG_PAGEALLOC - Support for heterogeneous systems with mismatches cache line sizes - Errata workarounds (A53 843419 update and QorIQ A-008585 timer bug) - arm64 PMU perf updates, including cpumasks for heterogeneous systems - Set UTS_MACHINE for building rpm packages - Yet another head.S tidy-up - Some cleanups and refactoring, particularly in the NUMA code - Lots of random, non-critical fixes across the board" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (100 commits) arm64: tlbflush.h: add __tlbi() macro arm64: Kconfig: remove SMP dependence for NUMA arm64: Kconfig: select OF/ACPI_NUMA under NUMA config arm64: fix dump_backtrace/unwind_frame with NULL tsk arm/arm64: arch_timer: Use archdata to indicate vdso suitability arm64: arch_timer: Work around QorIQ Erratum A-008585 arm64: arch_timer: Add device tree binding for A-008585 erratum arm64: Correctly bounds check virt_addr_valid arm64: migrate exception table users off module.h and onto extable.h arm64: pmu: Hoist pmu platform device name arm64: pmu: Probe default hw/cache counters arm64: pmu: add fallback probe table MAINTAINERS: Update ARM PMU PROFILING AND DEBUGGING entry arm64: Improve kprobes test for atomic sequence arm64/kvm: use alternative auto-nop arm64: use alternative auto-nop arm64: alternative: add auto-nop infrastructure arm64: lse: convert lse alternatives NOP padding to use __nops arm64: barriers: introduce nops and __nops macros for NOP sequences arm64: sysreg: replace open-coded mrs_s/msr_s with {read,write}_sysreg_s ...
| * | | | arm/arm64: arch_timer: Use archdata to indicate vdso suitabilityScott Wood2016-09-231-0/+8
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of comparing the name to a magic string, use archdata to explicitly communicate whether the arch timer is suitable for direct vdso access. Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Scott Wood <oss@buserror.net> Signed-off-by: Will Deacon <will.deacon@arm.com>