Messages in this thread | | | From | Borislav Petkov <> | Subject | [PATCH 0/2] x86/microcode/amd: Do not overwrite specific patch levels | Date | Wed, 1 Jul 2015 22:14:14 +0200 |
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From: Borislav Petkov <bp@suse.de>
Certain patch levels supplied by the BIOS should not be upgraded and overwritten by the microcode loader because doing so leaves the system dead in the water.
The two below provide for filtering out those levels and avoiding the update, thereby making those patch levels final.
Borislav Petkov (2): x86/microcode/amd: Extract current patch level read to a function x86/microcode/amd: Do not overwrite final patch levels
arch/x86/include/asm/microcode_amd.h | 1 + arch/x86/kernel/cpu/microcode/amd.c | 52 +++++++++++++++++++++++++++++-- arch/x86/kernel/cpu/microcode/amd_early.c | 24 ++++++++------ 3 files changed, 65 insertions(+), 12 deletions(-)
-- 2.3.5
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