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| author | Vitaliy Gusev <gusev.vitaliy@gmail.com> | 2023-02-28 11:16:35 +0000 |
|---|---|---|
| committer | Corvin Köhne <corvink@FreeBSD.org> | 2023-02-28 12:37:44 +0000 |
| commit | 281b496f22d1d666b2ef1e54985432627ec434a4 (patch) | |
| tree | ff51532daa3971a71f9f1afceeda649f9bdd2c4a | |
| parent | 34f804e547e7c3b10b12f5450ff2e0a771000daf (diff) | |
| download | src-281b496f22d1d666b2ef1e54985432627ec434a4.tar.gz src-281b496f22d1d666b2ef1e54985432627ec434a4.zip | |
vmm: fix restore of TSC offset
After suspend/resume Ubuntu 20.04 and 22.04 installer can hang if
tsc-early clocksource has a big skew.
Reviewed by: corvink, jhb
Fixes: a7db532e3a6f83067b342f569b56076d011f8a1e ("vmm: Simplify saving of absolute TSC values in snapshots.")
MFC after: 2 weeks
Sponsored by: vStack
Differential Revision: https://reviews.freebsd.org/D38474
| -rw-r--r-- | sys/amd64/vmm/vmm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/amd64/vmm/vmm.c b/sys/amd64/vmm/vmm.c index 9f5fc124f4ff..794ec5ab6597 100644 --- a/sys/amd64/vmm/vmm.c +++ b/sys/amd64/vmm/vmm.c @@ -2859,6 +2859,8 @@ vm_snapshot_vcpus(struct vm *vm, struct vm_snapshot_meta *meta) */ tsc = now + vcpu->tsc_offset; SNAPSHOT_VAR_OR_LEAVE(tsc, meta, ret, done); + if (meta->op == VM_SNAPSHOT_RESTORE) + vcpu->tsc_offset = tsc; } done: |