leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86/microcode/AMD: Add support for fam17h microcode loading

Browse Source 
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>
This commit is contained in:
Tom Lendacky 2017-11-30 16:46:40 -06:00 committed by Ingo Molnar
parent e3811a3f74
commit f4e9b7af0c
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/cpu/microcode/amd.c
View File

@ -470,6 +470,7 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
#define F14H_MPB_MAX_SIZE 1824 #define F14H_MPB_MAX_SIZE 1824
#define F15H_MPB_MAX_SIZE 4096 #define F15H_MPB_MAX_SIZE 4096
#define F16H_MPB_MAX_SIZE 3458 #define F16H_MPB_MAX_SIZE 3458
#define F17H_MPB_MAX_SIZE 3200
switch (family) { switch (family) {
case 0x14: case 0x14:
@ -481,6 +482,9 @@ static unsigned int verify_patch_size(u8 family, u32 patch_size,
case 0x16: case 0x16:
max_size = F16H_MPB_MAX_SIZE; max_size = F16H_MPB_MAX_SIZE;
break; break;
case 0x17:
max_size = F17H_MPB_MAX_SIZE;
break;
default: default:
max_size = F1XH_MPB_MAX_SIZE; max_size = F1XH_MPB_MAX_SIZE;
break; break;