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authorPaolo Bonzini <pbonzini@redhat.com>2020-07-09 13:12:09 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2020-07-10 06:15:36 -0400
commit83d31e5271ac74aad14b5a1a2ed26923e1446329 (patch)
tree6bf5fabc0523a5d672765f7a091db41e711d1f14 /Documentation
parent8038a922cf9af5266eaff29ce996a0d1b788fc0d (diff)
downloadlinux-83d31e5271ac74aad14b5a1a2ed26923e1446329.tar.bz2
KVM: nVMX: fixes for preemption timer migration
Commit 850448f35aaf ("KVM: nVMX: Fix VMX preemption timer migration", 2020-06-01) accidentally broke nVMX live migration from older version by changing the userspace ABI. Restore it and, while at it, ensure that vmx->nested.has_preemption_timer_deadline is always initialized according to the KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE flag. Cc: Makarand Sonare <makarandsonare@google.com> Fixes: 850448f35aaf ("KVM: nVMX: Fix VMX preemption timer migration") Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/virt/kvm/api.rst5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index 426f94582b7a..320788f81a05 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -4339,14 +4339,15 @@ Errors:
#define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001
struct kvm_vmx_nested_state_hdr {
- __u32 flags;
__u64 vmxon_pa;
__u64 vmcs12_pa;
- __u64 preemption_timer_deadline;
struct {
__u16 flags;
} smm;
+
+ __u32 flags;
+ __u64 preemption_timer_deadline;
};
struct kvm_vmx_nested_state_data {