提交 1c97f0a0 编写于 作者: J Joerg Roedel 提交者: Avi Kivity

KVM: X86: Introduce a tdp_set_cr3 function

This patch introduces a special set_tdp_cr3 function pointer
in kvm_x86_ops which is only used for tpd enabled mmu
contexts. This allows to remove some hacks from svm code.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
上级 f43addd4
......@@ -526,6 +526,8 @@ struct kvm_x86_ops {
bool (*rdtscp_supported)(void);
void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
bool (*has_wbinvd_exit)(void);
......
......@@ -2714,7 +2714,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
context->shadow_root_level = kvm_x86_ops->get_tdp_level();
context->root_hpa = INVALID_PAGE;
context->direct_map = true;
context->set_cr3 = kvm_x86_ops->set_cr3;
context->set_cr3 = kvm_x86_ops->set_tdp_cr3;
if (!is_paging(vcpu)) {
context->gva_to_gpa = nonpaging_gva_to_gpa;
......
......@@ -3216,9 +3216,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
savesegment(gs, gs_selector);
ldt_selector = kvm_read_ldt();
svm->vmcb->save.cr2 = vcpu->arch.cr2;
/* required for live migration with NPT */
if (npt_enabled)
svm->vmcb->save.cr3 = vcpu->arch.cr3;
clgi();
......@@ -3340,13 +3337,19 @@ static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
{
struct vcpu_svm *svm = to_svm(vcpu);
if (npt_enabled) {
svm->vmcb->control.nested_cr3 = root;
svm->vmcb->save.cr3 = root;
force_new_asid(vcpu);
return;
}
}
static void set_tdp_cr3(struct kvm_vcpu *vcpu, unsigned long root)
{
struct vcpu_svm *svm = to_svm(vcpu);
svm->vmcb->control.nested_cr3 = root;
/* Also sync guest cr3 here in case we live migrate */
svm->vmcb->save.cr3 = vcpu->arch.cr3;
svm->vmcb->save.cr3 = root;
force_new_asid(vcpu);
}
......@@ -3576,6 +3579,8 @@ static struct kvm_x86_ops svm_x86_ops = {
.write_tsc_offset = svm_write_tsc_offset,
.adjust_tsc_offset = svm_adjust_tsc_offset,
.set_tdp_cr3 = set_tdp_cr3,
};
static int __init svm_init(void)
......
......@@ -4341,6 +4341,8 @@ static struct kvm_x86_ops vmx_x86_ops = {
.write_tsc_offset = vmx_write_tsc_offset,
.adjust_tsc_offset = vmx_adjust_tsc_offset,
.set_tdp_cr3 = vmx_set_cr3,
};
static int __init vmx_init(void)
......
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