Re: [PATCH] accel/tcg: Introduce and use MO_ALIGN_TLB_ONLY

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

On 10/31/25 21:21, Michael Tokarev wrote:
>> Suggested-by: Peter Maydell <peter.maydell@linaro.org>
>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3171
>> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> 
> I wonder if we should pick this up for qemu-stable too (including
> 10.0.x lts series).  It's a rather large change though.
> 
> The patch applies cleanly to both 10.0.x and 10.1.x series, and
> seems to be working fine.  Maybe it can be picked up for a later
> release.

I think you should hold off for now.

> What's the implication of this bug, anyway?

Failure to raise an alignment trap accessing Device memory when architecturally required 
with -smp 1.

Before 10.0, we had no support for raising alignment traps accessing Device memory under 
any conditions, so this is more filling a hole in the implementation than a fixing a 
regression.


r~