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| author | Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> | 2014-10-30 12:31:00 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-10-31 11:29:02 +0100 |
| commit | 076893d3d06fe8642b8912591b9222bcb81f85aa (patch) | |
| tree | 80bbbd5cf08f8b9644fdec4faf1ca742501e5ccb /vl.c | |
| parent | 522abf69995ca20680ab048cad003796be36ef77 (diff) | |
kvmvapic: patch_instruction fix
When QEMU works in icount mode cpu_restore_state function performs two actions:
restoring the program counter and updating icount to the correct value.
kvmvapic's patch_instruction function is called by cpu_report_tpr_access
function which also invokes cpu_restore_state. It results to calling
cpu_restore_state twice - in cpu_report_tpr_access and in patch_instruction.
When icount is disabled second call is safe. But when icount is enabled,
cpu_restore_state modifies instructions counter twice, which leads to incorrect
behavior. This patch removes useless cpu_restore_state call from kvmvapic.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Diffstat (limited to 'vl.c')
0 files changed, 0 insertions, 0 deletions