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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-01-22 11:17:48 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-01-22 11:17:48 +0000 |
| commit | 7c513ec247842ae517b6d3bb8b93202594eae02d (patch) | |
| tree | ecb49063521c54f317362976076999ac4b6ed481 /xen/arch/x86/microcode_intel.c | |
| parent | 8383ddfff59a21989863a40351a93c1b6ce4218b (diff) | |
| download | xen-7c513ec247842ae517b6d3bb8b93202594eae02d.tar.gz xen-7c513ec247842ae517b6d3bb8b93202594eae02d.tar.bz2 xen-7c513ec247842ae517b6d3bb8b93202594eae02d.zip | |
x86 ucode: add S3 microcode update
When wakeup from S3, use per cpu microcode image to update cpu
microcode.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Diffstat (limited to 'xen/arch/x86/microcode_intel.c')
| -rw-r--r-- | xen/arch/x86/microcode_intel.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/xen/arch/x86/microcode_intel.c b/xen/arch/x86/microcode_intel.c index c93df509ad..7d8657ff2f 100644 --- a/xen/arch/x86/microcode_intel.c +++ b/xen/arch/x86/microcode_intel.c @@ -360,7 +360,16 @@ static int cpu_request_microcode(int cpu, const void *buf, size_t size) return error; } +static int microcode_resume_match(int cpu, struct cpu_signature *nsig) +{ + struct ucode_cpu_info *uci = ucode_cpu_info + cpu; + + return (sigmatch(nsig->sig, uci->cpu_sig.sig, nsig->pf, uci->cpu_sig.pf) && + (uci->cpu_sig.rev > nsig->rev)); +} + static struct microcode_ops microcode_intel_ops = { + .microcode_resume_match = microcode_resume_match, .cpu_request_microcode = cpu_request_microcode, .collect_cpu_info = collect_cpu_info, .apply_microcode = apply_microcode, |