linux-kernel - Re: [PATCH] misc/mei: INTEL_MEI should depend on X86 or DRM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <aX0fYgU4FHIbsUET@intel.com>
Date: Fri, 30 Jan 2026 16:15:14 -0500
From: Rodrigo Vivi <rodrigo.vivi@...el.com>
To: "Usyskin, Alexander" <alexander.usyskin@...el.com>,
	<intel-gfx@...ts.freedesktop.org>
CC: Simon Richter <Simon.Richter@...yros.de>, Arnd Bergmann <arnd@...db.de>,
	Geert Uytterhoeven <geert+renesas@...der.be>, Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] misc/mei: INTEL_MEI should depend on X86 or DRM_XE

On Thu, Jan 29, 2026 at 12:53:12AM -0500, Usyskin, Alexander wrote:
> > Subject: Re: [PATCH] misc/mei: INTEL_MEI should depend on X86 or DRM_XE
> > 
> > Hi,
> > 
> > On 1/28/26 3:57 PM, Usyskin, Alexander wrote:
> > 
> > > There are different usages of mei:
> > > - for discrete graphics xe/i915 will load mei via auxiliary device also on non
> > x86.
> > > - for integrated xe/i915 communicate with mei for on-chip CSME - this
> > scenario is x86 only.
> > 
> > > IMO this should cover all:
> > > depends on X86 || DRM_XE!=n || DRM_I915!=n || COMPILE_TEST
> > 
> > Is there discrete i915?
> > 
> 
> DG1, Alchemist and some server cards are supported by i915
> 
> > DRM_I915 depends on PCI && X86 (so "X86 || DRM_I915" is redundant,
> > which
> > is why I didn't add it in my version of the patch. If DRM_I915 is useful
> > on non-x86 we might want to change that as well.
> > 
> 
> Let ask gfx people.

Cc: intel-gfx@...ts.freedesktop.org

> Rodrigo, is DRM_I915 useful on non-x86?

No, I really don't believe it would work out.

> 
> > Also, is there any policy on dependency ordering? On non-X86, INTEL_MEI
> > becomes available only after selecting DRM_XE, which is in a directory
> > included much later, so the question is not shown initially, is that a
> > problem?
> > 
> 
> By not enabling INTEL_MEI the biggest thing that you loose are the firmware update.
> I'm not sure how to sort this out and if it is worth the effort.
> 
> - - 
> Thanks,
> Sasha
> 
>