[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] exec: Advise huge pages for the TCG code gen bu
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] [PATCH] exec: Advise huge pages for the TCG code gen buffer |
Date: |
Sat, 8 Dec 2012 17:52:08 +0000 |
Thanks, applied.
On Thu, Nov 1, 2012 at 10:20 PM, Richard Henderson <address@hidden> wrote:
> After allocating 32MB or more contiguous memory, huge pages
> would seem to be ideal.
>
> Signed-off-by: Richard Henderson <address@hidden>
> ---
> exec.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/exec.c b/exec.c
> index df67938..ab07f68 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -602,6 +602,8 @@ static inline void code_gen_alloc(size_t tb_size)
> exit(1);
> }
>
> + qemu_madvise(code_gen_buffer, code_gen_buffer_size, QEMU_MADV_HUGEPAGE);
> +
> /* Steal room for the prologue at the end of the buffer. This ensures
> (via the MAX_CODE_GEN_BUFFER_SIZE limits above) that direct branches
> from TB's to the prologue are going to be in range. It also means
> --
> 1.7.11.7
>
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [Qemu-devel] [PATCH] exec: Advise huge pages for the TCG code gen buffer,
Blue Swirl <=