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KVM: Replace read accesses of vcpu->arch.cr0 by an accessor

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Since we'd like to allow the guest to own a few bits of cr0 at times, we need
to know when we access those bits.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity
2009-12-29 18:07:30 +02:00
committed by Marcelo Tosatti
parent a1f83a74fe
commit 4d4ec08745
7 changed files with 38 additions and 27 deletions
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6
arch/x86/kvm/emulate.c
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@@ -1515,7 +1515,7 @@ emulate_syscall(struct x86_emulate_ctxt *ctxt)
/* syscall is not available in real mode */
if (c->lock_prefix || ctxt->mode == X86EMUL_MODE_REAL
|| !(ctxt->vcpu->arch.cr0 & X86_CR0_PE))
|| !kvm_read_cr0_bits(ctxt->vcpu, X86_CR0_PE))
return -1;
setup_syscalls_segments(ctxt, &cs, &ss);
@@ -1569,7 +1569,7 @@ emulate_sysenter(struct x86_emulate_ctxt *ctxt)
/* inject #GP if in real mode or paging is disabled */
if (ctxt->mode == X86EMUL_MODE_REAL ||
!(ctxt->vcpu->arch.cr0 & X86_CR0_PE)) {
!kvm_read_cr0_bits(ctxt->vcpu, X86_CR0_PE)) {
kvm_inject_gp(ctxt->vcpu, 0);
return -1;
}
@@ -1635,7 +1635,7 @@ emulate_sysexit(struct x86_emulate_ctxt *ctxt)
/* inject #GP if in real mode or paging is disabled */
if (ctxt->mode == X86EMUL_MODE_REAL
|| !(ctxt->vcpu->arch.cr0 & X86_CR0_PE)) {
|| !kvm_read_cr0_bits(ctxt->vcpu, X86_CR0_PE)) {
kvm_inject_gp(ctxt->vcpu, 0);
return -1;
}