diff options
| author | Dor Laor <dor.laor@qumranet.com> | 2007-03-30 13:06:33 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-05-03 10:52:28 +0300 |
| commit | e0fa826f969c262c23908953bf85add487cc2e6c (patch) | |
| tree | b9fdaaffea660aadd1120267e6966da3f5d10afe | |
| parent | df513e2cdd099822ed32cbc20aaf4ff310372202 (diff) | |
| download | linux-e0fa826f969c262c23908953bf85add487cc2e6c.tar.bz2 | |
KVM: Add mmu cache clear function
Functions that play around with the physical memory map
need a way to clear mappings to possibly nonexistent or
invalid memory. Both the mmu cache and the processor tlb
are cleared.
Signed-off-by: Dor Laor <dor.laor@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/kvm.h | 1 | ||||
| -rw-r--r-- | drivers/kvm/mmu.c | 17 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index 6d0bd7aab92e..59357bea5b61 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -430,6 +430,7 @@ int kvm_mmu_setup(struct kvm_vcpu *vcpu); int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot); +void kvm_mmu_zap_all(struct kvm_vcpu *vcpu); hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa); #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index d81b9cd3465f..376800a33968 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -1314,6 +1314,23 @@ void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot) } } +void kvm_mmu_zap_all(struct kvm_vcpu *vcpu) +{ + destroy_kvm_mmu(vcpu); + + while (!list_empty(&vcpu->kvm->active_mmu_pages)) { + struct kvm_mmu_page *page; + + page = container_of(vcpu->kvm->active_mmu_pages.next, + struct kvm_mmu_page, link); + kvm_mmu_zap_page(vcpu, page); + } + + mmu_free_memory_caches(vcpu); + kvm_arch_ops->tlb_flush(vcpu); + init_kvm_mmu(vcpu); +} + #ifdef AUDIT static const char *audit_msg; |