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(parent: 94df6e8) | patch
x86/spec_ctrl: Split X86_FEATURE_SC_MSR into PV and HVM variants
authorAndrew Cooper <andrew.cooper3@citrix.com>
Tue, 17 Apr 2018 13:15:04 +0000 (14:15 +0100)
committerAndrew Cooper <andrew.cooper3@citrix.com>
Wed, 16 May 2018 11:19:10 +0000 (12:19 +0100)
commitfa9eb09d446a1279f5e861e6b84fa8675dabf148
treebb5aa7eb8ef0ad86353239dc83895a8861b216a2tree | snapshot
parent94df6e8588e35cc2028ccb3fd2921c6e6360605ecommit | diff
x86/spec_ctrl: Split X86_FEATURE_SC_MSR into PV and HVM variants

In order to separately control whether MSR_SPEC_CTRL is virtualised for PV and
HVM guests, split the feature used to control runtime alternatives into two.
Xen will use MSR_SPEC_CTRL itself if either of these features are active.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Release-acked-by: Juergen Gross <jgross@suse.com>
xen/arch/x86/spec_ctrl.c diff | blob | history
xen/include/asm-x86/cpufeatures.h diff | blob | history
xen/include/asm-x86/spec_ctrl_asm.h diff | blob | history
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