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[Qemu-devel] Re: [PATCH] A bit optimization for tlb_set_page()


From: Jan Kiszka
Subject: [Qemu-devel] Re: [PATCH] A bit optimization for tlb_set_page()
Date: Tue, 27 Apr 2010 20:36:06 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666

Jun Koi wrote:
> It is not necessary to continue searching for watchpoint when we
> already found one and setup for handling watchpoint in a search loop
> in tlb_set_page().
> This patch breaks that search loop on then.

Acked-by: Jan Kiszka <address@hidden>

> 
> Signed-off-by: Jun Koi <address@hidden>
> 
> diff --git a/exec.c b/exec.c
> index 14d1fd7..6329775 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -2240,6 +2240,7 @@ void tlb_set_page(CPUState *env, target_ulong vaddr,
>              /* TODO: The memory case can be optimized by not trapping
>                 reads of pages with a write breakpoint.  */

PS: Don't you also want to address this todo while you are at it? :)

>              address |= TLB_MMIO;
> +            break;
>          }
>      }
> 
> 
> 

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