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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-10 09:08:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-10 09:08:21 -0700
commitc67723ebbb2d6f672a0e9e5b1a8d1a2442942557 (patch)
tree3518799ec3b4e5a8529de39ca8342fde50907952 /virt
parentec6671589a07d9b27ff5832138ff435b3a3c9b09 (diff)
parent326f578f7e1443bac2333712dd130a261ec15288 (diff)
downloadlinux-stericsson-c67723ebbb2d6f672a0e9e5b1a8d1a2442942557.tar.gz
Merge tag 'kvm-3.10-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Gleb Natapov: "Most of the fixes are in the emulator since now we emulate more than we did before for correctness sake we see more bugs there, but there is also an OOPS fixed and corruption of xcr0 register." * tag 'kvm-3.10-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: emulator: emulate SALC KVM: emulator: emulate XLAT KVM: emulator: emulate AAM KVM: VMX: fix halt emulation while emulating invalid guest sate KVM: Fix kvm_irqfd_init initialization KVM: x86: fix maintenance of guest/host xcr0 state
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ae88b719bd2e..302681c4aa44 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3105,13 +3105,21 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
int r;
int cpu;
- r = kvm_irqfd_init();
- if (r)
- goto out_irqfd;
r = kvm_arch_init(opaque);
if (r)
goto out_fail;
+ /*
+ * kvm_arch_init makes sure there's at most one caller
+ * for architectures that support multiple implementations,
+ * like intel and amd on x86.
+ * kvm_arch_init must be called before kvm_irqfd_init to avoid creating
+ * conflicts in case kvm is already setup for another implementation.
+ */
+ r = kvm_irqfd_init();
+ if (r)
+ goto out_irqfd;
+
if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
r = -ENOMEM;
goto out_free_0;
@@ -3186,10 +3194,10 @@ out_free_1:
out_free_0a:
free_cpumask_var(cpus_hardware_enabled);
out_free_0:
- kvm_arch_exit();
-out_fail:
kvm_irqfd_exit();
out_irqfd:
+ kvm_arch_exit();
+out_fail:
return r;
}
EXPORT_SYMBOL_GPL(kvm_init);