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author | Richard Henderson <richard.henderson@linaro.org> | 2018-10-18 18:56:16 -0700 |
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committer | Peter Maydell <peter.maydell@linaro.org> | 2018-10-19 17:38:48 +0100 |
commit | 88c9add25e7120e8622796c81ad3f3fb7f8d40e7 (patch) | |
tree | 33b613d88a75d5ec431b0a2b663eb9b4f4a15ac8 /ioport.c | |
parent | 5b67106992e2a829119a7902925d6b79cab4ad14 (diff) |
target/arm: Only flush tlb if ASID changespull-target-arm-20181019
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 'ioport.c')
0 files changed, 0 insertions, 0 deletions