kvm: x86: Emulate IA32_XFD_ERR for guest

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Emulate read/write to IA32_XFD_ERR MSR.

Only the saved value in the guest_fpu container is touched in the
emulation handler. Actual MSR update is handled right before entering
the guest (with preemption disabled)

Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Zeng Guang <guang.zeng@intel.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220105123532.12586-14-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

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Jing Liu 2022-01-05 04:35:24 -08:00 • committed by Paolo Bonzini

parent ec5be88ab2

commit 548e83650a

1 changed files with 20 additions and 1 deletions

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arch/x86/kvm/x86.c

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