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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2022-10-25 15:47:31 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-10-28 13:10:30 +0300 |
| commit | ad8f9e69942c7db90758d9d774157e53bce94840 (patch) | |
| tree | 20eecaf13c197f4b83c09421e105425204e5aa90 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 055f37f84e304e59c046d1accfd8f08462f52c4c (diff) | |
| download | linux-ad8f9e69942c7db90758d9d774157e53bce94840.tar.xz | |
KVM: x86: emulator: update the emulation mode after CR0 write
Update the emulation mode when handling writes to CR0, because
toggling CR0.PE switches between Real and Protected Mode, and toggling
CR0.PG when EFER.LME=1 switches between Long and Protected Mode.
This is likely a benign bug because there is no writeback of state,
other than the RIP increment, and when toggling CR0.PE, the CPU has
to execute code from a very low memory address.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221025124741.228045-14-mlevitsk@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions