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authorMarcelo Tosatti <mtosatti@redhat.com>2009-12-23 14:35:25 -0200
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:35:45 -0300
commitf656ce0185cabbbb0cf96877306879661297c7ad (patch)
treee2c8e61642ae4849c901922552a1acf0112461b4 /arch/s390/kvm
parente93f8a0f821e290ac5149830110a5f704db7a1fc (diff)
downloadop-kernel-dev-f656ce0185cabbbb0cf96877306879661297c7ad.zip
op-kernel-dev-f656ce0185cabbbb0cf96877306879661297c7ad.tar.gz
KVM: switch vcpu context to use SRCU
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 06cce82..60f09ab 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -67,10 +67,14 @@ static inline long kvm_s390_vcpu_get_memsize(struct kvm_vcpu *vcpu)
static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu)
{
+ int idx;
struct kvm_memory_slot *mem;
+ struct kvm_memslots *memslots;
- down_read(&vcpu->kvm->slots_lock);
- mem = &vcpu->kvm->memslots[0];
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
+ memslots = rcu_dereference(vcpu->kvm->memslots);
+
+ mem = &memslots->memslots[0];
vcpu->arch.sie_block->gmsor = mem->userspace_addr;
vcpu->arch.sie_block->gmslm =
@@ -78,7 +82,7 @@ static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu)
(mem->npages << PAGE_SHIFT) +
VIRTIODESCSPACE - 1ul;
- up_read(&vcpu->kvm->slots_lock);
+ srcu_read_unlock(&vcpu->kvm->srcu, idx);
}
/* implemented in priv.c */
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