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authorPaolo Bonzini <pbonzini@redhat.com>2016-06-27 15:08:01 +0200
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2016-07-18 08:07:47 -0700
commit6443c73ab06239ab4b1bc0511d9b78f7122f477d (patch)
treec65a21f9088c9807a55e6aa42fb87c4a34f9ed2d /kernel/arch/x86/kvm/hyperv.h
parent09c7dd2e0b05c5bc2def37e525a98e6b344d56f5 (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> Change-Id: I12eea18c3ec648dbf782d7754b7b574d7d6aa92c upstream-status: backport Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/arch/x86/kvm/hyperv.h')
0 files changed, 0 insertions, 0 deletions