22 Aug
2024
22 Aug
'24
4:24 p.m.
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.