amd64/fpu: Track supervisor state XSAVE components
Needs ReviewPublic
Actions

Authored by bnovkov on Wed, Jan 15, 5:10 PM.

Tags

None

Referenced Files

	F107667920: D48466.diff
	Fri, Jan 17, 10:35 AM

	F107643849: D48466.id149295.diff
	Fri, Jan 17, 1:47 AM

	F107633001: D48466.diff
	Thu, Jan 16, 11:05 PM

	F107629873: D48466.id.diff
	Thu, Jan 16, 10:23 PM

	Unknown Object (File)
	Thu, Jan 16, 12:14 PM

	Unknown Object (File)
	Thu, Jan 16, 9:56 AM

	Unknown Object (File)
	Wed, Jan 15, 7:24 PM

Subscribers

imp

Details

Reviewers

kib

Summary

The amd64/fpu.c xsave_* routines track supported XSAVE components and
features. However, they only track supported user state components, and
there is currently no way for a consumer to check whether the CPU
supports a supervisor state component. Fix this by saving the supported
supervisor state components, enumerated by CPUID function 0DH,
sub-function 1, in a separate mask.