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Revert "KVM: MMU: record maximum physical address width in kvm_mmu_extended_role" 

Drop MAXPHYADDR from mmu_role now that all MMUs have their role
invalidated after a CPUID update.  Invalidating the role forces all MMUs
to re-evaluate the guest's MAXPHYADDR, and the guest's MAXPHYADDR can
only be changed only through a CPUID update.

This reverts commit de3ccd26fa.

Cc: Yu Zhang <yu.c.zhang@linux.intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622175739.3610207-9-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-06-22 10:56:53 -07:00 committed by Paolo Bonzini
parent 63f5a1909f
commit 6c032f12dd
2 changed files with 0 additions and 2 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -321,7 +321,6 @@ union kvm_mmu_extended_role {
unsigned int cr4_smap:1;
unsigned int cr4_smep:1;
unsigned int cr4_la57:1;
unsigned int maxphyaddr:6;
};
};

1
arch/x86/kvm/mmu/mmu.c
View File

@ -4538,7 +4538,6 @@ static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu)
ext.cr4_pse = !!is_pse(vcpu);
ext.cr4_pke = !!kvm_read_cr4_bits(vcpu, X86_CR4_PKE);
ext.cr4_la57 = !!kvm_read_cr4_bits(vcpu, X86_CR4_LA57);
ext.maxphyaddr = cpuid_maxphyaddr(vcpu);
ext.valid = 1;