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KVM: x86: mmu: remove argument to kvm_init_shadow_mmu and kvm_init_shadow_ept_mmu

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The initialization function in mmu.c can always use walk_mmu, which
is known to be vcpu->arch.mmu.  Only init_kvm_nested_mmu is used to
initialize vcpu->arch.nested_mmu.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-10-02 16:56:14 +02:00
parent e0c6db3e22
commit ad896af0b5
4 changed files with 26 additions and 22 deletions
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35
arch/x86/kvm/mmu.c
View File

@ -3763,7 +3763,7 @@ static void paging32E_init_context(struct kvm_vcpu *vcpu,
static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
{
struct kvm_mmu *context = vcpu->arch.walk_mmu;
struct kvm_mmu *context = &vcpu->arch.mmu;
context->base_role.word = 0;
context->page_fault = tdp_page_fault;
@ -3803,11 +3803,13 @@ static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
update_last_pte_bitmap(vcpu, context);
}
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context)
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu)
{
bool smep = kvm_read_cr4_bits(vcpu, X86_CR4_SMEP);
struct kvm_mmu *context = &vcpu->arch.mmu;
ASSERT(vcpu);
ASSERT(!VALID_PAGE(vcpu->arch.mmu.root_hpa));
ASSERT(!VALID_PAGE(context->root_hpa));
if (!is_paging(vcpu))
nonpaging_init_context(vcpu, context);
@ -3818,19 +3820,20 @@ void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context)
else
paging32_init_context(vcpu, context);
vcpu->arch.mmu.base_role.nxe = is_nx(vcpu);
vcpu->arch.mmu.base_role.cr4_pae = !!is_pae(vcpu);
vcpu->arch.mmu.base_role.cr0_wp = is_write_protection(vcpu);
vcpu->arch.mmu.base_role.smep_andnot_wp
context->base_role.nxe = is_nx(vcpu);
context->base_role.cr4_pae = !!is_pae(vcpu);
context->base_role.cr0_wp = is_write_protection(vcpu);
context->base_role.smep_andnot_wp
= smep && !is_write_protection(vcpu);
}
EXPORT_SYMBOL_GPL(kvm_init_shadow_mmu);
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context,
bool execonly)
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly)
{
struct kvm_mmu *context = &vcpu->arch.mmu;
ASSERT(vcpu);
ASSERT(!VALID_PAGE(vcpu->arch.mmu.root_hpa));
ASSERT(!VALID_PAGE(context->root_hpa));
context->shadow_root_level = kvm_x86_ops->get_tdp_level();
@ -3851,11 +3854,13 @@ EXPORT_SYMBOL_GPL(kvm_init_shadow_ept_mmu);
static void init_kvm_softmmu(struct kvm_vcpu *vcpu)
{
kvm_init_shadow_mmu(vcpu, vcpu->arch.walk_mmu);
vcpu->arch.walk_mmu->set_cr3 = kvm_x86_ops->set_cr3;
vcpu->arch.walk_mmu->get_cr3 = get_cr3;
vcpu->arch.walk_mmu->get_pdptr = kvm_pdptr_read;
vcpu->arch.walk_mmu->inject_page_fault = kvm_inject_page_fault;
struct kvm_mmu *context = &vcpu->arch.mmu;
kvm_init_shadow_mmu(vcpu);
context->set_cr3 = kvm_x86_ops->set_cr3;
context->get_cr3 = get_cr3;
context->get_pdptr = kvm_pdptr_read;
context->inject_page_fault = kvm_inject_page_fault;
}
static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu)

5
arch/x86/kvm/mmu.h
View File

@ -81,9 +81,8 @@ enum {
};
int handle_mmio_page_fault_common(struct kvm_vcpu *vcpu, u64 addr, bool direct);
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context);
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context,
bool execonly);
void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu);
void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly);
void update_permission_bitmask(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
bool ept);

4
arch/x86/kvm/svm.c
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@ -2003,8 +2003,8 @@ static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu,
static void nested_svm_init_mmu_context(struct kvm_vcpu *vcpu)
{
kvm_init_shadow_mmu(vcpu, &vcpu->arch.mmu);
WARN_ON(mmu_is_nested(vcpu));
kvm_init_shadow_mmu(vcpu);
vcpu->arch.mmu.set_cr3 = nested_svm_set_tdp_cr3;
vcpu->arch.mmu.get_cr3 = nested_svm_get_tdp_cr3;
vcpu->arch.mmu.get_pdptr = nested_svm_get_tdp_pdptr;

4
arch/x86/kvm/vmx.c
View File

@ -8202,9 +8202,9 @@ static unsigned long nested_ept_get_cr3(struct kvm_vcpu *vcpu)
static void nested_ept_init_mmu_context(struct kvm_vcpu *vcpu)
{
kvm_init_shadow_ept_mmu(vcpu, &vcpu->arch.mmu,
WARN_ON(mmu_is_nested(vcpu));
kvm_init_shadow_ept_mmu(vcpu,
nested_vmx_ept_caps & VMX_EPT_EXECUTE_ONLY_BIT);
vcpu->arch.mmu.set_cr3 = vmx_set_cr3;
vcpu->arch.mmu.get_cr3 = nested_ept_get_cr3;
vcpu->arch.mmu.inject_page_fault = nested_ept_inject_page_fault;