Re: [PATCH net-next v9 1/4] net: mana: prepare HWC ownership for safe reinitialization

[sashiko-bot@kernel.org]

> From: Long Li <longli@microsoft.com>
> 
> Dynamic HWC queue sizing tears down the bootstrap queues and establishes a
> second channel before publishing it. Prepare the existing HWC ownership and
> teardown paths so that sequence cannot free or reuse state still reachable
> by either the PF or an EQ handler.
> 
> The shared-memory aperture carries one request at a time. Serialize the
> complete ESTABLISH_HWC and DESTROY_HWC transactions, including possession
> polling and response validation. Record setup_active immediately before the
> MMIO submission and clear it only after DESTROY_HWC is acknowledged.
> 
> Treat an unacknowledged destroy as retained PF ownership. Fence the HWC EQ
> and withdraw its CQ from dispatch, but keep all queue memory and wrappers
> for a later teardown retry. A new channel creation retries that retained
> [ ... ]
> Link: https://lore.kernel.org/r/178910960115.219967.13830871915506436112@kernel.org
> Link: https://lore.kernel.org/r/179196575238.434549.10775387794024020898@kernel.org
> Link: https://lore.kernel.org/r/sashiko-outbox-170992@kernel.org
> Signed-off-by: Long Li <longli@microsoft.com>
> Signed-off-by: Wei Hu <weh@microsoft.com>

Sashiko has reviewed this patch and found no issues.

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