From: Jakub Kicinski <kuba@kernel.org>
To: Sahil Chandna <sahilchandna@linux.microsoft.com>
Cc: haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@kernel.org,
pabeni@redhat.com, kotaranov@microsoft.com, horms@kernel.org,
ernis@linux.microsoft.com, gargaditya@linux.microsoft.com,
mawasthi@linux.microsoft.com, leitao@debian.org,
linux-hyperv@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH net v2] net: mana: Add support to process throttled EQEs
Date: Tue, 20 Oct 2026 17:39:58 -0700 [thread overview]
Message-ID: <20261020173958.3262308d@kernel.org> (raw)
In-Reply-To: <20261014134304.4177657-1-sahilchandna@linux.microsoft.com>
On Wed, 14 Oct 2026 08:43:01 -0500 Sahil Chandna wrote:
> When an event queue nears full, the hardware coalesces the per-CQ
> GDMA_EQE_COMPLETION notifications into a single throttle EQE (type 4)
> that carries no cq_id. The driver does not handle this event type, so
> it falls through to the default case and is dropped. Any CQ whose
> completion notification was replaced by the throttle EQE can remain
> unserviced, causing its queue to stall.
> The issue was observed internally and following Tx stall logs were
> seen:
Does not apply, please rebase & repost.
--
pw-bot: cr
prev parent reply other threads:[~2026-10-21 0:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 13:43 [PATCH net v2] net: mana: Add support to process throttled EQEs Sahil Chandna
2026-10-21 0:39 ` Jakub Kicinski [this message]
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