| From bdf89df3c54518eed879d8fac7577fcfb220c67e Mon Sep 17 00:00:00 2001 |
| From: John Allen <john.allen@amd.com> |
| Date: Thu, 9 Apr 2020 10:34:29 -0500 |
| Subject: x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE |
| |
| From: John Allen <john.allen@amd.com> |
| |
| commit bdf89df3c54518eed879d8fac7577fcfb220c67e upstream. |
| |
| Future AMD CPUs will have microcode patches that exceed the default 4K |
| patch size. Raise our limit. |
| |
| Signed-off-by: John Allen <john.allen@amd.com> |
| Signed-off-by: Borislav Petkov <bp@suse.de> |
| Cc: stable@vger.kernel.org # v4.14.. |
| Link: https://lkml.kernel.org/r/20200409152931.GA685273@mojo.amd.com |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| arch/x86/include/asm/microcode_amd.h | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/arch/x86/include/asm/microcode_amd.h |
| +++ b/arch/x86/include/asm/microcode_amd.h |
| @@ -41,7 +41,7 @@ struct microcode_amd { |
| unsigned int mpb[0]; |
| }; |
| |
| -#define PATCH_MAX_SIZE PAGE_SIZE |
| +#define PATCH_MAX_SIZE (3 * PAGE_SIZE) |
| |
| #ifdef CONFIG_MICROCODE_AMD |
| extern void __init load_ucode_amd_bsp(unsigned int family); |
