diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2007-12-20 19:18:26 -0500 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-12-31 16:55:23 +0200 |
| commit | 03f6646f123b7afa1dc8595a6dc96f01d71c765b (patch) | |
| tree | f9c4e44a2c9a779434624bebcf7b8ff4a34252ce /arch/x86/kvm/vmx.c | |
| parent | 6e44a9063005c435bf62da3bf3c131ed4e54bced (diff) | |
KVM: MMU: Switch to mmu spinlock
Convert the synchronization of the shadow handling to a separate mmu_lock
spinlock.
Also guard fetch() by mmap_sem in read-mode to protect against alias
and memslot changes.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 99fec6362e30..4741806a0d64 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1476,7 +1476,6 @@ static int alloc_apic_access_page(struct kvm *kvm) struct kvm_userspace_memory_region kvm_userspace_mem; int r = 0; - mutex_lock(&kvm->lock); down_write(¤t->mm->mmap_sem); if (kvm->arch.apic_access_page) goto out; @@ -1490,7 +1489,6 @@ static int alloc_apic_access_page(struct kvm *kvm) kvm->arch.apic_access_page = gfn_to_page(kvm, 0xfee00); out: up_write(¤t->mm->mmap_sem); - mutex_unlock(&kvm->lock); return r; } |