| From: Tom Lendacky <thomas.lendacky@amd.com> |
| Date: Thu, 30 Nov 2017 16:46:40 -0600 |
| Subject: x86/microcode/AMD: Add support for fam17h microcode loading |
| |
| 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.amdoffice.net |
| Signed-off-by: Ingo Molnar <mingo@kernel.org> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| 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 |
| @@ -154,6 +154,7 @@ 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: |
| @@ -165,6 +166,9 @@ 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; |
