Messages in this thread | | | Date | Sat, 23 Apr 2022 08:20:18 -0700 | Subject | Re: [patch 3/3] x86/fpu/xsave: Optimize XSAVEC/S when XGETBV1 is supported | From | Dave Hansen <> |
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On 4/22/22 12:30, Thomas Gleixner wrote: > So I just go and add the XSAVEC support alone as that's actually > something which _is_ beneficial for guests.
Yeah, agreed.
When I went to test these patches, a bit loop with XSAVEC was ~10% faster that XSAVEOPT. This system has XSAVES, so wouldn't have been using XSAVEOPT in the first place in the kernel. But, this is at least one more data point in favor of XSAVEC.
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