| Message ID | c373f3f92b542b738f296d44bb6a916a1cded7bd.1691774049.git.pawan.kumar.gupta@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | target/i386: Export GDS_NO bit to guests | expand |
On 8/11/23 10:18, Pawan Gupta wrote:
> This is just compile tested.
I used this patch when testing the GDS Linux patches, so you can add a T-B from me.
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 97ad229d8ba3..48709b77689f 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1155,7 +1155,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, "sbdr-ssdp-no", "fbsdp-no", "psdp-no", NULL, "fb-clear", NULL, NULL, NULL, NULL, NULL, NULL, - "pbrsb-no", NULL, NULL, NULL, + "pbrsb-no", NULL, "gds-no", NULL, NULL, NULL, NULL, NULL, }, .msr = {
Gather Data Sampling (GDS) is a side-channel attack using Gather instructions. Some Intel processors will set ARCH_CAP_GDS_NO bit in MSR IA32_ARCH_CAPABILITIES to report that they are not vulnerable to GDS. Make this bit available to guests. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> --- This is just compile tested. target/i386/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)