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| author | Marcelo Tosatti <marcelo@kvack.org> | 2008-03-29 20:17:59 -0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 12:00:52 +0300 |
| commit | 3200f405a1e8e06c8634f11d33614455baa4e6be (patch) | |
| tree | 806116d2495dd7fd93b5c0db98a72fe4fa854787 /arch/x86/kvm/paging_tmpl.h | |
| parent | 25c5f225beda4fbea878ed8b6203ab4ecc7de2d1 (diff) | |
| download | kernel_samsung_tuna-3200f405a1e8e06c8634f11d33614455baa4e6be.zip kernel_samsung_tuna-3200f405a1e8e06c8634f11d33614455baa4e6be.tar.gz kernel_samsung_tuna-3200f405a1e8e06c8634f11d33614455baa4e6be.tar.bz2 | |
KVM: MMU: unify slots_lock usage
Unify slots_lock acquision around vcpu_run(). This is simpler and less
error-prone.
Also fix some callsites that were not grabbing the lock properly.
[avi: drop slots_lock while in guest mode to avoid holding the lock
for indefinite periods]
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index e9ae5db..57d872a 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -388,7 +388,6 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, if (r) return r; - down_read(&vcpu->kvm->slots_lock); /* * Look up the shadow pte for the faulting address. */ @@ -402,7 +401,6 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, pgprintk("%s: guest page fault\n", __func__); inject_page_fault(vcpu, addr, walker.error_code); vcpu->arch.last_pt_write_count = 0; /* reset fork detector */ - up_read(&vcpu->kvm->slots_lock); return 0; } @@ -422,7 +420,6 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, if (is_error_page(page)) { pgprintk("gfn %x is mmio\n", walker.gfn); kvm_release_page_clean(page); - up_read(&vcpu->kvm->slots_lock); return 1; } @@ -440,7 +437,6 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, ++vcpu->stat.pf_fixed; kvm_mmu_audit(vcpu, "post page fault (fixed)"); spin_unlock(&vcpu->kvm->mmu_lock); - up_read(&vcpu->kvm->slots_lock); return write_pt; } |