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Re: [Qemu-devel] [PATCH for-4.0] include/qemu/bswap.h: Use __builtin_mem
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH for-4.0] include/qemu/bswap.h: Use __builtin_memcpy() in accessor functions |
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Date: |
Mon, 18 Mar 2019 06:06:02 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 |
On 3/18/19 4:29 AM, Peter Maydell wrote:
> In the meantime, switch to using __builtin_memcpy() in the
> bswap.h accessor functions. This will make us robust against things
> like this fortify library in the short term. In the longer term
> it will mean that we don't end up with these functions being really
> badly-performing even if the semantics of the out-of-line memcpy()
> are correct.
>
> Reported-by: Fernando Casas Schössow <address@hidden>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
Reviewed-by: Richard Henderson <address@hidden>
r~