[PATCH 7/7] x86: Support XFD and AMX xsave data migration

2022-01-24 Thread Yang Zhong
From: Zeng Guang XFD(eXtended Feature Disable) allows to enable a feature on xsave state while preventing specific user threads from using the feature. Support save and restore XFD MSRs if CPUID.D.1.EAX[4] enumerate to be valid. Likewise migrate the MSRs and related xsave state necessarily. Sig

[RFC PATCH 7/7] x86: Support XFD and AMX xsave data migration

2022-01-07 Thread Yang Zhong
From: Zeng Guang XFD(eXtended Feature Disable) allows to enable a feature on xsave state while preventing specific user threads from using the feature. Support save and restore XFD MSRs if CPUID.D.1.EAX[4] enumerate to be valid. Likewise migrate the MSRs and related xsave state necessarily. Sig