4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tom Lendacky <thomas.lendacky@xxxxxxx> 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@xxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Borislav Petkov <bp@xxxxxxxxx> Link: https://lkml.kernel.org/r/20171130224640.15391.40247.stgit@xxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Alice Ferrazzi <alicef@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 @@ -470,6 +470,7 @@ 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: @@ -481,6 +482,9 @@ 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;