Re: use of MI "pcu" code for x86 FPU, allocate FPU context dynamically

[Matthias Drochner <M.Drochner%fz-juelich.de@localhost>]

On Tue, 10 Sep 2013 09:54:26 +0200
Jean-Yves Migeon <jeanyves.migeon%free.fr@localhost> wrote:
> is it safe to have a sleepable allocation right into
> fputrap(), especially in case of memory pressure?

I think so. The trap is synchronous, and in process context, so it
shouldn't be different than eg. memory allocation in a syscall.

As said, this was just an experiment for now. It probably makes sense to
use a pool_cache here. This would deal with alignment, and would allow
to free memory earlier, in an xcall/softint context.

best regards
Matthias


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