linux-kernel - Re: [RFC][PATCH] gpu:drm:i915:intel_detect_pch: back to check devfn instead of check class type

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

Message-ID: <53B14250.2080509@redhat.com>
Date:	Mon, 30 Jun 2014 12:56:16 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	"Chen, Tiejun" <tiejun.chen@...el.com>, daniel.vetter@...ll.ch,
	jani.nikula@...ux.intel.com, airlied@...ux.ie
CC:	intel-gfx@...ts.freedesktop.org, xen-devel@...ts.xensource.com,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	qemu-devel@...gnu.org
Subject: Re: [RFC][PATCH] gpu:drm:i915:intel_detect_pch: back to check devfn
 instead of check class type

Il 30/06/2014 05:13, Chen, Tiejun ha scritto:
> After I discuss internal, we think even we just set the real
> vendor/device ids to this ISA bridge at 00:1f.0, guest firmware should
> still work well with these pair of real vendor/device ids.
>
> So if you think something would conflict or be broken, could you tell us
> what's exactly that? Then we will double check.

The Xen hvmloader doesn't break since it only supports one chipset.  But 
SeaBIOS checks for the exact vendor/device ids since Q35 support was added.

If you want to add this feature, try to implement it in a way that is a 
bit more forward-looking.  I'm sure that Xen sooner or later will want a 
PCIe chipset, otherwise things such as AER forwarding are impossible.

Paolo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/