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Subject[PATCH 0/2] KVM: x86: Sanitize writes to MSR_KVM_PV_EOI_EN
Date
This is a continuation of work started by Li RongQing with
"[PATCH] KVM: x86: disable pv eoi if guest gives a wrong address":
https://lore.kernel.org/kvm/1636078404-48617-1-git-send-email-lirongqing@baidu.com/

Instead of resetting 'KVM_MSR_ENABLED' when a bogus address was written to
MSR_KVM_PV_EOI_EN I suggest we refuse to update MSR at all, this aligns
with #GP which is being injected on such writes.

Vitaly Kuznetsov (2):
KVM: x86: Rename kvm_lapic_enable_pv_eoi()
KVM: x86: Don't update vcpu->arch.pv_eoi.msr_val when a bogus value
was written to MSR_KVM_PV_EOI_EN

arch/x86/kvm/hyperv.c | 4 ++--
arch/x86/kvm/lapic.c | 23 ++++++++++++++---------
arch/x86/kvm/lapic.h | 2 +-
arch/x86/kvm/x86.c | 2 +-
4 files changed, 18 insertions(+), 13 deletions(-)

--
2.31.1

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