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KVM: switch vcpu context to use SRCU

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Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Marcelo Tosatti
2009-12-23 14:35:25 -02:00
parent e93f8a0f82
commit f656ce0185
6 changed files with 45 additions and 38 deletions
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10
arch/s390/kvm/kvm-s390.h
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@@ -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 */