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KVM: x86: introduce kvm_register_clear_available

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Small refactoring that will be used in the next patch.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210607090203.133058-7-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2021-06-07 12:02:01 +03:00 committed by Paolo Bonzini
parent 0f85722341
commit 329675dde9
2 changed files with 9 additions and 4 deletions
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7
arch/x86/kvm/kvm_cache_regs.h
View File

@ -55,6 +55,13 @@ static inline void kvm_register_mark_available(struct kvm_vcpu *vcpu,
__set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
}
static inline void kvm_register_clear_available(struct kvm_vcpu *vcpu,
enum kvm_reg reg)
{
__clear_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
__clear_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
}
static inline void kvm_register_mark_dirty(struct kvm_vcpu *vcpu,
enum kvm_reg reg)
{

6
arch/x86/kvm/svm/svm.c
View File

@ -3873,10 +3873,8 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
vcpu->arch.apf.host_apf_flags =
kvm_read_and_reset_apf_flags();
if (npt_enabled) {
vcpu->arch.regs_avail &= ~(1 << VCPU_EXREG_PDPTR);
vcpu->arch.regs_dirty &= ~(1 << VCPU_EXREG_PDPTR);
}
if (npt_enabled)
kvm_register_clear_available(vcpu, VCPU_EXREG_PDPTR);
/*
* We need to handle MC intercepts here before the vcpu has a chance to