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Re: [Qemu-devel] [PATCH] exec: fix ram_list dirty map optimization
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From: |
Juan Quintela |
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Subject: |
Re: [Qemu-devel] [PATCH] exec: fix ram_list dirty map optimization |
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Date: |
Tue, 04 Feb 2014 16:00:54 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Alexey Kardashevskiy <address@hidden> wrote:
> The ae2810c4bb3b383176e8e1b33931b16c01483aab patch introduced
> optimization for ram_list.dirty_memory update. However it can only
> work correctly if hpratio is 1 as the @bitmap parameter stores 1 bits
> per system page size (may vary, 4K or 64K on PPC64) and
> ram_list.dirty_memory stores 1 bit per TARGET_PAGE_SIZE
> (which is hardcoded to 4K).
>
> This fixes hpratio!=1 case to fall back to the slow path.
>
> Signed-off-by: Alexey Kardashevskiy <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
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