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| author | Nadav Amit <namit@cs.technion.ac.il> | 2015-03-30 15:39:21 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-03-30 16:46:11 +0200 |
| commit | 900efe200e317649aecbeaa55619a4fc3adb2251 (patch) | |
| tree | 88322796917be9a8edc1b43adb7f0d932e8acea8 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 6fd8e1275709a5bb084847eda6730b983538a572 (diff) | |
KVM: x86: BSF and BSR emulation change register unnecassarily
If the source of BSF and BSR is zero, the destination register should not
change. That is how real hardware behaves. If we set the destination even with
the same value that we had before, we may clear bits [63:32] unnecassarily.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427719163-5429-4-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions