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authorKai Huang <kai.huang@linux.intel.com>2015-01-28 10:54:26 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2015-01-29 15:31:37 +0100
commit1c91cad42366ce0799ca17e7ad6995418741d012 (patch)
treeb5b6d96d85fbec4f2678470f7439c24e5d05eba6 /arch/x86/kvm
parent9b51a63024bd759f97a12f50907b8af23b065b36 (diff)
KVM: x86: Change parameter of kvm_mmu_slot_remove_write_access
This patch changes the second parameter of kvm_mmu_slot_remove_write_access from 'slot id' to 'struct kvm_memory_slot *' to align with kvm_x86_ops dirty logging hooks, which will be introduced in further patch. Better way is to change second parameter of kvm_arch_commit_memory_region from 'struct kvm_userspace_memory_region *' to 'struct kvm_memory_slot * new', but it requires changes on other non-x86 ARCH too, so avoid it now. Signed-off-by: Kai Huang <kai.huang@linux.intel.com> Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/mmu.c5
-rw-r--r--arch/x86/kvm/x86.c10
2 files changed, 9 insertions, 6 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index b7192236dcba..ec62ecd2d513 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4408,14 +4408,13 @@ void kvm_mmu_setup(struct kvm_vcpu *vcpu)
init_kvm_mmu(vcpu);
}
-void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot)
+void kvm_mmu_slot_remove_write_access(struct kvm *kvm,
+ struct kvm_memory_slot *memslot)
{
- struct kvm_memory_slot *memslot;
gfn_t last_gfn;
int i;
bool flush = false;
- memslot = id_to_memslot(kvm->memslots, slot);
last_gfn = memslot->base_gfn + memslot->npages - 1;
spin_lock(&kvm->mmu_lock);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1e10e3f7f516..3a7fcff81af6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7538,7 +7538,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
const struct kvm_memory_slot *old,
enum kvm_mr_change change)
{
-
+ struct kvm_memory_slot *new;
int nr_mmu_pages = 0;
if ((mem->slot >= KVM_USER_MEM_SLOTS) && (change == KVM_MR_DELETE)) {
@@ -7557,6 +7557,10 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
if (nr_mmu_pages)
kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
+
+ /* It's OK to get 'new' slot here as it has already been installed */
+ new = id_to_memslot(kvm->memslots, mem->slot);
+
/*
* Write protect all pages for dirty logging.
*
@@ -7566,8 +7570,8 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
*
* See the comments in fast_page_fault().
*/
- if ((change != KVM_MR_DELETE) && (mem->flags & KVM_MEM_LOG_DIRTY_PAGES))
- kvm_mmu_slot_remove_write_access(kvm, mem->slot);
+ if ((change != KVM_MR_DELETE) && (new->flags & KVM_MEM_LOG_DIRTY_PAGES))
+ kvm_mmu_slot_remove_write_access(kvm, new);
}
void kvm_arch_flush_shadow_all(struct kvm *kvm)