Re: [PATCH] softmmu/memory: use memcpy for multi-byte accesses

[Richard Henderson <richard.henderson@linaro.org>]

On 11/15/23 08:58, Patrick Venture wrote:
> 
> 
> On Wed, Nov 15, 2023 at 2:35 AM Peter Maydell <peter.maydell@linaro.org 
> <mailto:peter.maydell@linaro.org>> wrote:
> 
>     On Tue, 14 Nov 2023 at 20:55, Patrick Venture <venture@google.com
>     <mailto:venture@google.com>> wrote:
>      > Avoids unaligned pointer issues.
>      >
> 
>     It would be nice to be more specific in the commit message here, by
>     describing what kind of guest behaviour or machine config runs into this
>     problem, and whether this happens in a situation users are likely to
>     run into. If the latter, we should consider tagging the commit
>     with "Cc: qemu-stable@nongnu.org <mailto:qemu-stable@nongnu.org>" to have it
>     backported to the
>     stable release branches.
> 
> 
> Thanks! I'll update the commit message with v2.  We were seeing this in our 
> infrastructure with unaligned accesses using the pointer dereference as there are no 
> guarantees on alignment of the incoming values.

Which host cpu, for reference?  There aren't many that generate unaligned traps these days...


r~