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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-13 10:11:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-13 10:11:14 -0700
commit329f4152911c276b074bec75a0443f88821afdb7 (patch)
treef7c9cd285a4513379b56a78bc65aac8b34c1d35d /include
parenta1e210331bbc69511898cd46dd09625ddeee5af8 (diff)
parent89a1d43ead15902b1f15768aa1121a2e2d5935af (diff)
downloadlinux-329f4152911c276b074bec75a0443f88821afdb7.tar.bz2
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář: "KVM: - lock kvm_device list to prevent corruption on device creation. PPC: - split debugfs initialization from creation of the xics device to unlock the newly taken kvm lock earlier. s390: - prevent userspace from triggering two WARN_ON_ONCE. MIPS: - fix several issues in the management of TLB faults (Cc: stable)" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: MIPS: KVM: Propagate kseg0/mapped tlb fault errors MIPS: KVM: Fix gfn range check in kseg0 tlb faults MIPS: KVM: Add missing gfn range check MIPS: KVM: Fix mapped fault broken commpage handling KVM: Protect device ops->create and list_add with kvm->lock KVM: PPC: Move xics_debugfs_init out of create KVM: s390: reset KVM_REQ_MMU_RELOAD if mapping the prefix failed KVM: s390: set the prefix initially properly
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm_host.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 01e908ac4a39..9c28b4d4c90b 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1113,9 +1113,21 @@ struct kvm_device {
/* create, destroy, and name are mandatory */
struct kvm_device_ops {
const char *name;
+
+ /*
+ * create is called holding kvm->lock and any operations not suitable
+ * to do while holding the lock should be deferred to init (see
+ * below).
+ */
int (*create)(struct kvm_device *dev, u32 type);
/*
+ * init is called after create if create is successful and is called
+ * outside of holding kvm->lock.
+ */
+ void (*init)(struct kvm_device *dev);
+
+ /*
* Destroy is responsible for freeing dev.
*
* Destroy may be called before or after destructors are called