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KVM: mmu: remove uninteresting MMU "free" callbacks 

The free MMU callback has been a wrapper for mmu_free_roots since mmu_free_roots
itself was introduced (commit 17ac10a, [PATCH] KVM: MU: Special treatment
for shadow pae root pages, 2007-01-05), and has always been the same for all
MMU cases.  Remove the indirection as it is useless.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-10-02 16:56:10 +02:00 committed by Gleb Natapov
parent 4344ee981e
commit 206260941f
2 changed files with 4 additions and 19 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -261,7 +261,6 @@ struct kvm_mmu {
bool prefault);
void (*inject_page_fault)(struct kvm_vcpu *vcpu,
struct x86_exception *fault);
void (*free)(struct kvm_vcpu *vcpu);
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
struct x86_exception *exception);
gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);

22
arch/x86/kvm/mmu.c
View File

@ -3424,18 +3424,12 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code,
return 0;
}
static void nonpaging_free(struct kvm_vcpu *vcpu)
{
mmu_free_roots(vcpu);
}
static int nonpaging_init_context(struct kvm_vcpu *vcpu,
struct kvm_mmu *context)
{
context->new_cr3 = nonpaging_new_cr3;
context->page_fault = nonpaging_page_fault;
context->gva_to_gpa = nonpaging_gva_to_gpa;
context->free = nonpaging_free;
context->sync_page = nonpaging_sync_page;
context->invlpg = nonpaging_invlpg;
context->update_pte = nonpaging_update_pte;
@ -3471,11 +3465,6 @@ static void inject_page_fault(struct kvm_vcpu *vcpu,
vcpu->arch.mmu.inject_page_fault(vcpu, fault);
}
static void paging_free(struct kvm_vcpu *vcpu)
{
nonpaging_free(vcpu);
}
static bool sync_mmio_spte(struct kvm *kvm, u64 *sptep, gfn_t gfn,
unsigned access, int *nr_present)
{
@ -3683,7 +3672,6 @@ static int paging64_init_context_common(struct kvm_vcpu *vcpu,
context->sync_page = paging64_sync_page;
context->invlpg = paging64_invlpg;
context->update_pte = paging64_update_pte;
context->free = paging_free;
context->shadow_root_level = level;
context->root_hpa = INVALID_PAGE;
context->direct_map = false;
@ -3709,7 +3697,6 @@ static int paging32_init_context(struct kvm_vcpu *vcpu,
context->new_cr3 = paging_new_cr3;
context->page_fault = paging32_page_fault;
context->gva_to_gpa = paging32_gva_to_gpa;
context->free = paging_free;
context->sync_page = paging32_sync_page;
context->invlpg = paging32_invlpg;
context->update_pte = paging32_update_pte;
@ -3732,7 +3719,6 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
context->base_role.word = 0;
context->new_cr3 = nonpaging_new_cr3;
context->page_fault = tdp_page_fault;
context->free = nonpaging_free;
context->sync_page = nonpaging_sync_page;
context->invlpg = nonpaging_invlpg;
context->update_pte = nonpaging_update_pte;
@ -3812,7 +3798,6 @@ int kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context,
context->sync_page = ept_sync_page;
context->invlpg = ept_invlpg;
context->update_pte = ept_update_pte;
context->free = paging_free;
context->root_level = context->shadow_root_level;
context->root_hpa = INVALID_PAGE;
context->direct_map = false;
@ -3890,9 +3875,10 @@ static int init_kvm_mmu(struct kvm_vcpu *vcpu)
static void destroy_kvm_mmu(struct kvm_vcpu *vcpu)
{
ASSERT(vcpu);
if (VALID_PAGE(vcpu->arch.mmu.root_hpa))
/* mmu.free() should set root_hpa = INVALID_PAGE */
vcpu->arch.mmu.free(vcpu);
if (VALID_PAGE(vcpu->arch.mmu.root_hpa)) {
mmu_free_roots(vcpu);
WARN_ON(VALID_PAGE(vcpu->arch.mmu.root_hpa));
}
}
int kvm_mmu_reset_context(struct kvm_vcpu *vcpu)