From aaee2c94f7a1f7726e360a6cfb40173bd552bcff Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Thu, 20 Dec 2007 19:18:26 -0500 Subject: 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 Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/kvm_host.h') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index a020fb280540..2714068ee8bc 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -104,7 +104,8 @@ struct kvm_memory_slot { }; struct kvm { - struct mutex lock; /* protects everything except vcpus */ + struct mutex lock; /* protects the vcpus array and APIC accesses */ + spinlock_t mmu_lock; struct mm_struct *mm; /* userspace tied to this vm */ int nmemslots; struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + -- cgit v1.2.2