#ifndef BENCH_H #define BENCH_H /* * The madvise transparent hugepage constants were added in glibc * 2.13. For compatibility with older versions of glibc, define these * tokens if they are not already defined. * * PA-RISC uses different madvise values from other architectures and * needs to be special-cased. */ #ifdef __hppa__ # ifndef MADV_HUGEPAGE # define MADV_HUGEPAGE 67 # endif # ifndef MADV_NOHUGEPAGE # define MADV_NOHUGEPAGE 68 # endif #else # ifndef MADV_HUGEPAGE # define MADV_HUGEPAGE 14 # endif # ifndef MADV_NOHUGEPAGE # define MADV_NOHUGEPAGE 15 # endif #endif int bench_numa(int argc, const char **argv, const char *prefix); int bench_sched_messaging(int argc, const char **argv, const char *prefix); int bench_sched_pipe(int argc, const char **argv, const char *prefix); int bench_mem_memcpy(int argc, const char **argv, const char *prefix); int bench_mem_memset(int argc, const char **argv, const char *prefix); int bench_futex_hash(int argc, const char **argv, const char *prefix); int bench_futex_wake(int argc, const char **argv, const char *prefix); int bench_futex_wake_parallel(int argc, const char **argv, const char *prefix); int bench_futex_requeue(int argc, const char **argv, const char *prefix); /* pi futexes */ int bench_futex_lock_pi(int argc, const char **argv, const char *prefix); #define BENCH_FORMAT_DEFAULT_STR "default" #define BENCH_FORMAT_DEFAULT 0 #define BENCH_FORMAT_SIMPLE_STR "simple" #define BENCH_FORMAT_SIMPLE 1 #define BENCH_FORMAT_UNKNOWN -1 extern int bench_format; extern unsigned int bench_repeat; #endif git/'>summaryrefslogtreecommitdiff
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /include/net/llc_c_ev.h
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/net/llc_c_ev.h')