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Re: [Qemu-devel] [PATCH 2/3] target/arm: Only flush tlb if ASID changes
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From: |
Aaron Lindsay |
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Subject: |
Re: [Qemu-devel] [PATCH 2/3] target/arm: Only flush tlb if ASID changes |
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Date: |
Thu, 18 Oct 2018 20:28:53 +0000 |
On Oct 18 11:27, Richard Henderson wrote:
> 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.
>
> Signed-off-by: Richard Henderson <address@hidden>
Reviewed-by: Aaron Lindsay <address@hidden>