From: Michal Pecio <michal.pecio@gmail.com>
To: Wen Xiong <wenxiong@linux.ibm.com>
Cc: mathias.nyman@intel.com, gregkh@linuxfoundation.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, wenxiong@us.ibm.com,
Brian King <brking@linux.vnet.ibm.com>,
Samuel Mendoza-Jonas <sam@mendozajonas.com>,
Joel Stanley <joel@jms.id.au>
Subject: Re: [PATCH] xhci: Reset controller on xhci shutdown
Date: Fri, 2 Oct 2026 16:18:28 +0200 [thread overview]
Message-ID: <20261002161828.365ff859.michal.pecio@gmail.com> (raw)
In-Reply-To: <561d22493c3d078b26f547dd8f6f6f46@linux.ibm.com>
On Fri, 02 Oct 2026 09:05:36 -0500, Wen Xiong wrote:
> On 2026-10-02 03:29, Michal Pecio wrote:
> > What exactly happens after kexec?
> > Why a PCI reset in particular?
> > Are we sure it's not a bug elsewhere?
> >
> After executing a kexec boots on a bare metal machine, the USB
> controller disappeared.
Sure, but what does it mean exactly?
Not even showing up in lspci output?
Is this our problem and not PCI subsystem's?
Are we sure it's not a bug elsewhere?
(Last time somebody reported issues with kexec,
it turned out to be an obscure Intel IOMMU bug).
Regards,
Michal
next prev parent reply other threads:[~2026-10-02 14:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-01 22:25 [PATCH] xhci: Reset controller on xhci shutdown wenxiong
2026-10-01 22:40 ` Mathias Nyman
2026-10-02 14:08 ` Wen Xiong
2026-10-02 8:29 ` Michal Pecio
2026-10-02 14:05 ` Wen Xiong
2026-10-02 14:18 ` Michal Pecio [this message]
2026-10-05 13:01 ` Wen Xiong
2026-10-06 10:55 ` Michal Pecio
2026-10-14 20:32 ` Wen Xiong
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