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authorBorislav Petkov <bp@suse.de>2017-10-22 13:47:31 +0300
committerIngo Molnar <mingo@kernel.org>2017-10-22 14:06:02 +0300
commitbfc1168de949cd3e9ca18c3480b5085deff1ea7c (patch)
tree989b48bdcfaf3dfbe900c38dd15f9d91f00e3c8c /Documentation/kdump
parentce56a86e2ade45d052b3228cdfebe913a1ae7381 (diff)
downloadlinux-bfc1168de949cd3e9ca18c3480b5085deff1ea7c.tar.xz
x86/cpu/AMD: Apply the Erratum 688 fix when the BIOS doesn't
Some F14h machines have an erratum which, "under a highly specific and detailed set of internal timing conditions" can lead to skipping instructions and RIP corruption. Add the fix for those machines when their BIOS doesn't apply it or there simply isn't BIOS update for them. Tested-by: <mirh@protonmail.ch> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: <stable@vger.kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sherry Hurwitz <sherry.hurwitz@amd.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yazen Ghannam <Yazen.Ghannam@amd.com> Link: http://lkml.kernel.org/r/20171022104731.28249-1-bp@alien8.de Link: https://bugzilla.kernel.org/show_bug.cgi?id=197285 [ Added pr_info() that we activated the workaround. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
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