[PATCH 06/22] KVM: MMU: Introduce inject_page_fault function pointer

Joerg Roedel
2010-04-27T10:38:16Z

This patch introduces an inject_page_fault function pointer
into struct kvm_mmu which will be used to inject a page
fault. This will be used later when Nested Nested Paging is
implemented.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/include/asm/kvm_host.h | 3 +++
arch/x86/kvm/mmu.c | 4 +++-
2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 47d1755..f1d46e6 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -236,6 +236,9 @@ struct kvm_mmu {
void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
+ void (*inject_page_fault)(struct kvm_vcpu *vcpu,
+ unsigned long addr,
+ u32 error_code);
void (*free)(struct kvm_vcpu *vcpu);
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
u32 *error);
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index a25a72e..114c522 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2245,7 +2245,7 @@ static void inject_page_fault(struct kvm_vcpu *vcpu,
u64 addr,
u32 err_code)
{
- kvm_inject_page_fault(vcpu, addr, err_code);
+ vcpu->arch.mmu.inject_page_fault(vcpu, addr, err_code);
}

static void paging_free(struct kvm_vcpu *vcpu)
@@ -2393,6 +2393,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu)
vcpu->arch.mmu.direct_map = true;
vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_tdp_cr3;
vcpu->arch.mmu.get_cr3 = get_cr3;
+ vcpu->arch.mmu.inject_page_fault = kvm_inject_page_fault;

if (!is_paging(vcpu)) {
context->gva_to_gpa = nonpaging_gva_to_gpa;
@@ -2434,6 +2435,7 @@ static int init_kvm_softmmu(struct kvm_vcpu *vcpu)
vcpu->arch.mmu.direct_map = false;
vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_cr3;
vcpu->arch.mmu.get_cr3 = get_cr3;
+ vcpu->arch.mmu.inject_page_fault = kvm_inject_page_fault;

return r;
}
--
1.7.0.4