4.9-stable review patch. If anyone has any objections, please let me know.
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From: Tom Lendacky thomas.lendacky@amd.com
commit f4e9b7af0cd58dd039a0fb2cd67d57cea4889abf upstream.
The size for the Microcode Patch Block (MPB) for an AMD family 17h processor is 3200 bytes. Add a #define for fam17h so that it does not default to 2048 bytes and fail a microcode load/update.
Signed-off-by: Tom Lendacky thomas.lendacky@amd.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Borislav Petkov bp@alien8.de Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@tlendack-t1.amdof... Signed-off-by: Ingo Molnar mingo@kernel.org Cc: Alice Ferrazzi alicef@gentoo.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/kernel/cpu/microcode/amd.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -592,6 +592,7 @@ static unsigned int verify_patch_size(u8 #define F14H_MPB_MAX_SIZE 1824 #define F15H_MPB_MAX_SIZE 4096 #define F16H_MPB_MAX_SIZE 3458 +#define F17H_MPB_MAX_SIZE 3200
switch (family) { case 0x14: @@ -603,6 +604,9 @@ static unsigned int verify_patch_size(u8 case 0x16: max_size = F16H_MPB_MAX_SIZE; break; + case 0x17: + max_size = F17H_MPB_MAX_SIZE; + break; default: max_size = F1XH_MPB_MAX_SIZE; break;