| commit | 9175d2e97b08e86293e68246020a5c29f88aa674 | [log] [tgz] |
|---|---|---|
| author | Paolo Bonzini <pbonzini@redhat.com> | Mon Jun 27 15:08:01 2016 +0200 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Fri Jul 01 11:03:39 2016 +0200 |
| tree | cb8268447f8a95149214b807c987d7d84f0dc098 | |
| parent | f2485b3e0c6c0aa3a9546babc2fad3739e964ebb [diff] |
KVM: vmx: fix underflow in TSC deadline calculation If the TSC deadline timer is programmed really close to the deadline or even in the past, the computation in vmx_set_hv_timer can underflow and cause delta_tsc to be set to a huge value. This generally results in vmx_set_hv_timer returning -ERANGE, but we can fix it by limiting delta_tsc to be positive or zero. Reported-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>