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| author |   Borislav Petkov <bp@suse.de> | 2018-03-14 19:36:14 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2018-03-16 20:55:51 +0100 |
| commit | 2613f36ed965d0e5a595a1d931fd3b480e82d6fd (patch) | |
| tree | 47c242f71716d90d80c84f6e8c2ac576737fc4a3 /arch/x86/include/asm/microcode.h | |
| parent | x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist (diff) | |
| download | wireguard-linux-2613f36ed965d0e5a595a1d931fd3b480e82d6fd.tar.xz wireguard-linux-2613f36ed965d0e5a595a1d931fd3b480e82d6fd.zip | |
x86/microcode: Attempt late loading only when new microcode is present
Return UCODE_NEW from the scanning functions to denote that new microcode
was found and only then attempt the expensive synchronization dance.
Reported-by: Emanuel Czirai <xftroxgpx@protonmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Emanuel Czirai <xftroxgpx@protonmail.com>
Tested-by: Ashok Raj <ashok.raj@intel.com>
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lkml.kernel.org/r/20180314183615.17629-1-bp@alien8.de
Diffstat (limited to 'arch/x86/include/asm/microcode.h')
| -rw-r--r-- | arch/x86/include/asm/microcode.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h index 7fb1047d61c7..6cf0e4cb7b97 100644 --- a/arch/x86/include/asm/microcode.h +++ b/arch/x86/include/asm/microcode.h @@ -39,6 +39,7 @@ struct device; enum ucode_state { UCODE_OK = 0, + UCODE_NEW, UCODE_UPDATED, UCODE_NFOUND, UCODE_ERROR, |