| Message ID | 20191119072327.GA30825@guptapadev.amr |
|---|---|
| State | New |
| Headers | show |
| Series | target/i386: Export TAA_NO bit to guests | expand |
On 19/11/19 08:23, Pawan Gupta wrote: > TSX Async Abort (TAA) is a side channel attack on internal buffers in > some Intel processors similar to Microachitectural Data Sampling (MDS). > > Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the > IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to > TAA. Make this bit available to guests. > > Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> > --- > target/i386/cpu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/target/i386/cpu.c b/target/i386/cpu.c > index a624163ac2cd..af84b04951cf 100644 > --- a/target/i386/cpu.c > +++ b/target/i386/cpu.c > @@ -1205,7 +1205,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { > .feat_names = { > "rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry", > "ssb-no", "mds-no", NULL, NULL, > - NULL, NULL, NULL, NULL, > + "taa-no", NULL, NULL, NULL, > NULL, NULL, NULL, NULL, > NULL, NULL, NULL, NULL, > NULL, NULL, NULL, NULL, > Queued, thanks. Paolo
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index a624163ac2cd..af84b04951cf 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1205,7 +1205,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .feat_names = { "rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry", "ssb-no", "mds-no", NULL, NULL, - NULL, NULL, NULL, NULL, + "taa-no", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
TSX Async Abort (TAA) is a side channel attack on internal buffers in some Intel processors similar to Microachitectural Data Sampling (MDS). Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to TAA. Make this bit available to guests. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> --- target/i386/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)