On Mon, Aug 31, 2020 at 8:35 AM Mathieu Desnoyers
wrote:
>
Thanks for the review!
>
> - On Aug 26, 2020, at 7:02 PM, Peter Oskolkov p...@google.com wrote:
> [...]
> >
> > static void ipi_mb(void *info)
> > {
> > +#ifdef CONFIG_RSEQ
> > + int *flags = info;
> > +
> > + if (flags && (*
- On Aug 26, 2020, at 7:02 PM, Peter Oskolkov p...@google.com wrote:
[...]
>
> static void ipi_mb(void *info)
> {
> +#ifdef CONFIG_RSEQ
> + int *flags = info;
> +
> + if (flags && (*flags == MEMBARRIER_FLAG_RSEQ))
> + rseq_preempt(current);
> +#endif
Please lift this in
This patchset is based on Google-internal RSEQ
work done by Paul Turner and Andrew Hunter.
When working with per-CPU RSEQ-based memory allocations,
it is sometimes important to make sure that a global
memory location is no longer accessed from RSEQ critical
sections. For example, there can be two
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