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| author |   Marcelo Tosatti <mtosatti@redhat.com> | 2015-10-14 19:33:09 -0300 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2015-10-16 10:34:16 +0200 |
| commit | 7cae2bedcbd4680b155999655e49c27b9cf020fa (patch) | |
| tree | dbcb58f0bfaef1337e187710a2a039aa6793e787 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | KVM: x86: MMU: Eliminate an extra memory slot search in mapping_level() (diff) | |
| download | wireguard-linux-7cae2bedcbd4680b155999655e49c27b9cf020fa.tar.xz wireguard-linux-7cae2bedcbd4680b155999655e49c27b9cf020fa.zip | |
KVM: x86: move steal time initialization to vcpu entry time
As reported at https://bugs.launchpad.net/qemu/+bug/1494350,
it is possible to have vcpu->arch.st.last_steal initialized
from a thread other than vcpu thread, say the iothread, via
KVM_SET_MSRS.
Which can cause an overflow later (when subtracting from vcpu threads
sched_info.run_delay).
To avoid that, move steal time accumulation to vcpu entry time,
before copying steal time data to guest.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions