On Thu, Aug 22, 2024 at 05:17:14PM +0100, Catalin Marinas wrote: > > /* > > - * Ensure that GCS changes are observable by/from other PEs in > > - * case of migration. > > + * Ensure that GCS memory effects of the 'prev' thread are > > + * ordered before other memory accesses with release semantics > > + * (or preceded by a DMB) on the current PE. In addition, any > > + * memory accesses with acquire semantics (or succeeded by a > > + * DMB) are ordered before GCS memory effects of the 'next' > > + * thread. This will ensure that the GCS memory effects are > > + * visible to other PEs in case of migration. > > */ > > - gcsb_dsync(); > > + if (task_gcs_el0_enabled(current) || task_gcs_el0_enabled(next)) > > + gcsb_dsync(); > Ah, the comment turned up in this patch. It looks fine. Oh, sorry - I should probably just pull this hunk into the other patch.
Attachment:
signature.asc
Description: PGP signature
