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| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2010-06-23 14:59:29 +0900 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 10:47:15 +0300 |
| commit | 4482b06c0459469c101a1da3f4b24594da557f99 (patch) | |
| tree | 55da76c52f91676943219722d3f09f61aa8d7012 | |
| parent | 4d29bdbf12f35f7e7816d67e99c150630684604f (diff) | |
| download | op-kernel-dev-4482b06c0459469c101a1da3f4b24594da557f99.zip op-kernel-dev-4482b06c0459469c101a1da3f4b24594da557f99.tar.gz | |
KVM: ia64: fix dirty_log_lock spin_lock section not to include get_dirty_log()
kvm_get_dirty_log() calls copy_to_user(). So we need to narrow the
dirty_log_lock spin_lock section not to include this.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/ia64/kvm/kvm-ia64.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index bd510be..d85b5d2 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1817,10 +1817,12 @@ static int kvm_ia64_sync_dirty_log(struct kvm *kvm, n = kvm_dirty_bitmap_bytes(memslot); base = memslot->base_gfn / BITS_PER_LONG; + spin_lock(&kvm->arch.dirty_log_lock); for (i = 0; i < n/sizeof(long); ++i) { memslot->dirty_bitmap[i] = dirty_bitmap[base + i]; dirty_bitmap[base + i] = 0; } + spin_unlock(&kvm->arch.dirty_log_lock); r = 0; out: return r; @@ -1835,7 +1837,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, int is_dirty = 0; mutex_lock(&kvm->slots_lock); - spin_lock(&kvm->arch.dirty_log_lock); r = kvm_ia64_sync_dirty_log(kvm, log); if (r) @@ -1855,7 +1856,6 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, r = 0; out: mutex_unlock(&kvm->slots_lock); - spin_unlock(&kvm->arch.dirty_log_lock); return r; } |
