linux-kernel - Re: [STABLE] 6.12.23: vfio error (was: arch/x86/coco/tdx/tdx.c build error)

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Message-ID: <66f3e1b3-6165-4a2e-f34c-de6fef86e441@absolutedigital.net>
Date: Mon, 14 Apr 2025 19:55:06 -0400 (EDT)
From: Cal Peake <cp@...olutedigital.net>
To: Kernel Mailing List <linux-kernel@...r.kernel.org>
cc: Vishal Annapurve <vannapurve@...gle.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alex Williamson <alex.williamson@...hat.com>
Subject: Re: [STABLE] 6.12.23: vfio error (was: arch/x86/coco/tdx/tdx.c build
 error)

On Sun, 13 Apr 2025, Cal Peake wrote:

> After booting the new kernel, I get errors trying to do vfio passthrough:
> 
> qemu-8.2-system-x86_64: vfio: Cannot reset device 0000:14:00.3, no available reset mechanism.
> qemu-8.2-system-x86_64: vfio: Cannot reset device 0000:14:00.2, no available reset mechanism.
> qemu-8.2-system-x86_64: vfio: Cannot reset device 0000:14:00.1, no available reset mechanism.
> qemu-8.2-system-x86_64: vfio: Cannot reset device 0000:14:00.0, no available reset mechanism.

This was resolved by Alex Williamson, with his patch:

https://lore.kernel.org/lkml/20250414211828.3530741-1-alex.williamson@redhat.com/

Thank you, Alex!

-- 
Cal Peake