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| author | neel <neel@FreeBSD.org> | 2014-03-01 03:17:58 +0000 |
|---|---|---|
| committer | neel <neel@FreeBSD.org> | 2014-03-01 03:17:58 +0000 |
| commit | 4e6374765e21c44d489f2462699675f7d5f3667f (patch) | |
| tree | 22228d63debc444bf53dde332100a6cc58b0467b /usr.bin | |
| parent | 74725c830c962ae630f7495d398ce9c2e633204c (diff) | |
| download | FreeBSD-src-4e6374765e21c44d489f2462699675f7d5f3667f.zip FreeBSD-src-4e6374765e21c44d489f2462699675f7d5f3667f.tar.gz | |
Fix a race between VMRUN() and vcpu_notify_event() due to 'vcpu->hostcpu'
being updated outside of the vcpu_lock(). The race is benign and could
potentially result in a missed notification about a pending interrupt to
a vcpu. The interrupt would not be lost but rather delayed until the next
VM exit.
The vcpu's hostcpu is now updated concurrently with the vcpu state change.
When the vcpu transitions to the RUNNING state the hostcpu is set to 'curcpu'.
It is set to 'NOCPU' in all other cases.
Reviewed by: grehan
Diffstat (limited to 'usr.bin')
0 files changed, 0 insertions, 0 deletions
