Messages in this thread | | | From | Florian Weimer <> | Subject | Re: [RFC PATCH] rseq: x86: implement abort-at-ip extension | Date | Wed, 12 Jan 2022 17:00:49 +0100 |
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* Peter Zijlstra:
> On Wed, Jan 12, 2022 at 04:16:36PM +0100, Florian Weimer wrote: > >> You could perhaps push a signal frame onto the stack. It's going to >> be expensive, but it's already in the context switch path, so maybe it >> does not matter. > > Please no! Signals are a trainwreck that need change (see the whole > AVX-512 / AMX saga), we shouldn't use more of that just cause.
If it's a signal, it should be modeled as such. I think it's pretty close to a synchronous signal.
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