Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e0fa826f969c262c23908953bf85add487cc2e6c
Commit: e0fa826f969c262c23908953bf85add487cc2e6c
Parent: df513e2cdd099822ed32cbc20aaf4ff310372202
Author: Dor Laor <[EMAIL PROTECTED]>
AuthorDate: Fri Mar 30 13:06:33 2007 +0300
Committer: Avi Kivity <[EMAIL PROTECTED]>
CommitDate: Thu May 3 10:52:28 2007 +0300
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 <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
drivers/kvm/kvm.h | 1 +
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 6d0bd7a..59357be 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 d81b9cd..376800a 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;
-
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