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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2016-03-11 16:53:11 +0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-03-14 12:42:32 -0400 |
| commit | b5c41530ef442dba667c4d964c722e8157f7da72 (patch) | |
| tree | abc695066486a4055354397e6991652504337b07 /arch/arm/mach-mv78xx0/common.c | |
| parent | 325940deb74b23351f507d5f1e1e01592c1efa1c (diff) | |
| download | linux-stable-b5c41530ef442dba667c4d964c722e8157f7da72.tar.gz | |
KVM: x86: move steal time initialization to vcpu entry time
[ Upstream commit 7cae2bedcbd4680b155999655e49c27b9cf020fa ]
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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'arch/arm/mach-mv78xx0/common.c')
0 files changed, 0 insertions, 0 deletions