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| author | John Allen <john.allen@amd.com> | 2020-04-09 10:34:29 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-24 08:00:58 +0200 |
| commit | fdb1ccf027ecf6a10b8704ec1e546cff0b10a57d (patch) | |
| tree | 8c7f8260ac9adc592fc91783c93978805425a756 /arch | |
| parent | 4d7e37a4040e1189e721e805180e093848510b09 (diff) | |
| download | linux-stable-fdb1ccf027ecf6a10b8704ec1e546cff0b10a57d.tar.gz linux-stable-fdb1ccf027ecf6a10b8704ec1e546cff0b10a57d.tar.bz2 linux-stable-fdb1ccf027ecf6a10b8704ec1e546cff0b10a57d.zip | |
x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/microcode_amd.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h index 209492849566..5c524d4f71cd 100644 --- 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); |