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x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE

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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
This commit is contained in:
John Allen 2020-04-09 10:34:29 -05:00 committed by Borislav Petkov
parent b296695298
commit bdf89df3c5
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/microcode_amd.h
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@ -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);