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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-02 12:39:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-02 12:39:10 -0800
commite4178c75049c581114998a850ecdfa5a2811cde6 (patch)
tree30ad09d949e58d32a4c0aa0a70bc1819a26d820d /include/scsi/libiscsi.h
parentf2557779e1a9cfbf69c99b74da26cc1b2b10e752 (diff)
parent4b3e6f2ef3722f1a6a97b6034ed492c1a21fd4ae (diff)
Merge tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa fix from Max Filippov: "A for an Xtensa build error introduced in reset code refactoring series in v4.9: - fix noMMU build on cores with MMU" * tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: fix noMMU build on cores with MMU
Diffstat (limited to 'include/scsi/libiscsi.h')
0 files changed, 0 insertions, 0 deletions
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 'tools/perf/Documentation/perf-sched.txt')