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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-10-24 07:50:20 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-10-24 07:51:37 +0100 |
| commit | 93f379b0c43617b1361f742f261479eaed4959cb (patch) | |
| tree | 820b8f48c523040b54c6501a35d8f83308f4df01 /scripts/qemu.py | |
| parent | f478847f1ee0df9397f561025ab2f687fd923571 (diff) | |
| download | focaccia-qemu-93f379b0c43617b1361f742f261479eaed4959cb.tar.gz focaccia-qemu-93f379b0c43617b1361f742f261479eaed4959cb.zip | |
target/arm: Only flush tlb if ASID changes
Since QEMU does not implement ASIDs, changes to the ASID must flush the tlb. However, if the ASID does not change there is no reason to flush. In testing a boot of the Ubuntu installer to the first menu, this reduces the number of flushes by 30%, or nearly 600k instances. Reviewed-by: Aaron Lindsay <aaron@os.amperecomputing.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20181019015617.22583-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'scripts/qemu.py')
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