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authorMarcelo Tosatti <marcelo@kvack.org>2008-03-18 17:42:34 -0300
committerAvi Kivity <avi@qumranet.com>2008-03-25 10:22:17 +0200
commit707a18a51d83d9180a63b3cbaad8eda7764a8689 (patch)
treed6c7c76fb3c06fdc177ae4ddacb3cdca05030270 /arch
parent15aaa819e20cb183f26392ed8ea16020630ef142 (diff)
KVM: VMX: convert init_rmode_tss() to slots_lock
init_rmode_tss was forgotten during the conversion from mmap_sem to slots_lock. INFO: task qemu-system-x86:3748 blocked for more than 120 seconds. Call Trace: [<ffffffff8053d100>] __down_read+0x86/0x9e [<ffffffff8053fb43>] do_page_fault+0x346/0x78e [<ffffffff8053d235>] trace_hardirqs_on_thunk+0x35/0x3a [<ffffffff8053dcad>] error_exit+0x0/0xa9 [<ffffffff8035a7a7>] copy_user_generic_string+0x17/0x40 [<ffffffff88099a8a>] :kvm:kvm_write_guest_page+0x3e/0x5f [<ffffffff880b661a>] :kvm_intel:init_rmode_tss+0xa7/0xf9 [<ffffffff880b7d7e>] :kvm_intel:vmx_vcpu_reset+0x10/0x38a [<ffffffff8809b9a5>] :kvm:kvm_arch_vcpu_setup+0x20/0x53 [<ffffffff8809a1e4>] :kvm:kvm_vm_ioctl+0xad/0x1cf [<ffffffff80249dea>] __lock_acquire+0x4f7/0xc28 [<ffffffff8028fad9>] vfs_ioctl+0x21/0x6b [<ffffffff8028fd75>] do_vfs_ioctl+0x252/0x26b [<ffffffff8028fdca>] sys_ioctl+0x3c/0x5e [<ffffffff8020b01b>] system_call_after_swapgs+0x7b/0x80 Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/vmx.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f2df03c12f1..8e1462880d1 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1433,7 +1433,7 @@ static int init_rmode_tss(struct kvm *kvm)
int ret = 0;
int r;
- down_read(&current->mm->mmap_sem);
+ down_read(&kvm->slots_lock);
r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
if (r < 0)
goto out;
@@ -1456,7 +1456,7 @@ static int init_rmode_tss(struct kvm *kvm)
ret = 1;
out:
- up_read(&current->mm->mmap_sem);
+ up_read(&kvm->slots_lock);
return ret;
}