[PATCH 01/33] PCI: Prepare to protect against concurrent isolated cpuset change
Bjorn Helgaas
helgaas at kernel.org
Tue Oct 14 13:53:13 PDT 2025
On Mon, Oct 13, 2025 at 10:31:14PM +0200, Frederic Weisbecker wrote:
> HK_TYPE_DOMAIN will soon integrate cpuset isolated partitions and
> therefore be made modifyable at runtime. Synchronize against the cpumask
> update using RCU.
>
> The RCU locked section includes both the housekeeping CPU target
> election for the PCI probe work and the work enqueue.
>
> This way the housekeeping update side will simply need to flush the
> pending related works after updating the housekeeping mask in order to
> make sure that no PCI work ever executes on an isolated CPU. This part
> will be handled in a subsequent patch.
s/modifyable/modifiable/ (also in several other commit logs)
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