From: sashiko-bot@kernel.org
To: "Abhin Parekadan Jose" <abhinjoses@gmail.com>
Cc: linux-pci@vger.kernel.org
Subject: Re: [PATCH RFC v2 5/5] misc: Add edu_srpoc surprise removal POC driver
Date: Sun, 27 Sep 2026 17:00:17 +0000 [thread overview]
Message-ID: <20260927170017.D5A0E1F0089A@smtp.kernel.org> (raw)
In-Reply-To: <20260927165459.829900-6-abhinjoses@gmail.com>
> A test driver for the QEMU edu device that reproduces the surprise
> removal hang described in MST's RFC v5 thread.
>
> - hacked in a reg to the edu device on qemu to raise a delayed irq
> - This driver writes to that reg in remove and waits for the irq to be
> handled. This simulates del_gendisk() blocked in
> blk_mq_freeze_queue_wait()
>
> remove() blocks until the delayed interrupt arrives, 600 seconds after
> it is requested, or until the device is surprise removed and its
> disconnect work runs. That is the purpose of the driver, so a normal
> unbind takes 600 seconds, and on a QEMU without the delayed interrupt
> register it never returns. It is only built with CONFIG_EDU_SRPOC.
>
> Assisted-by: LLM
> Signed-off-by: Abhin Parekadan Jose <abhinjoses@gmail.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260927165459.829900-1-abhinjoses@gmail.com?part=5
prev parent reply other threads:[~2026-09-27 17:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-27 16:54 [PATCH RFC v2 0/5] PCI: pciehp: Report surprise removal during safe removal Abhin Parekadan Jose
2026-09-27 16:54 ` [PATCH RFC v2 1/5] PCI: Report surprise removal event Abhin Parekadan Jose
2026-09-27 17:07 ` sashiko-bot
2026-09-27 16:54 ` [PATCH RFC v2 2/5] PCI: pciehp: Add pci_hp_wait_link_change() Abhin Parekadan Jose
2026-09-27 17:03 ` sashiko-bot
2026-09-27 16:54 ` [PATCH RFC v2 3/5] PCI/DPC: Add pci_dpc_wait_recovery() Abhin Parekadan Jose
2026-09-27 16:59 ` sashiko-bot
2026-09-27 16:54 ` [PATCH RFC v2 4/5] PCI: pciehp: Report surprise removal from pciehp_isr() Abhin Parekadan Jose
2026-09-27 17:02 ` sashiko-bot
2026-09-27 16:54 ` [PATCH RFC v2 5/5] misc: Add edu_srpoc surprise removal POC driver Abhin Parekadan Jose
2026-09-27 17:00 ` sashiko-bot [this message]
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