Re: [PATCH] build: prefer sigaltstack over ucontext on Linux

["Daniel P. Berrangé" <berrange@redhat.com>]

On Fri, Apr 24, 2026 at 12:19:19PM +0300, Elisey Konstantinov wrote:
> I completely agree, but in my opinion, investigating UContext will take a considerable amount of time, which is why I took the liberty of proposing this patch; in the commit message, I actually mention that this is merely a “temporary  workaround”
> 
> So, I suggest:
> - Merging the patch into the mainstream for the convenience of users (as, from what I’ve observed, SigAltStack is coping quite well with the task, at least for now...)
> - Whilst leaving #3276 open for the time being and continuing the UContext diagnostics there
> - And accordingly, as soon as UContext is fully functional, we can switch QEMU back from SigAltStack
> 
> Also the another arrangement is to use UContext ONLY if PPC is in the build targets, but I am unable to do this, as my knowledge of Meson is insufficient for such a task; nevertheless, I would be grateful for any assistance :)
> 
> P. S. Anticipating such a reaction, I DELIBERATELY did not include “Resolves” in the patch notes, so I am fully aware of all the proposed precautions

PPC MacOS guest is such a niche use case, that I don't see a compelling
reason to make such a change in git until the ticket has been fully
investigated and the problem root caused.