Re: [PATCH] xhci: Reset controller on xhci shutdown

[Michal Pecio]

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