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| author | Nadav Amit <namit@cs.technion.ac.il> | 2014-09-30 20:49:14 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-11-03 12:07:23 +0100 |
| commit | 6bdf06625d240361e92254143a123ab432e337f8 (patch) | |
| tree | 4c3935eecde52126dd7fad88d3e4a5d3171fbcb1 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 394457a928e0f7ff121c375966f5ec1980dabc09 (diff) | |
KVM: x86: DR7.GD should be cleared upon any #DB exception
Intel SDM 17.2.4 (Debug Control Register (DR7)) says: "The processor clears the
GD flag upon entering to the debug exception handler." This sentence may be
misunderstood as if it happens only on #DB due to debug-register protection,
but it happens regardless to the cause of the #DB.
Fix the behavior to match both real hardware and Bochs.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions