netdev - Re: DRM_RAS for CPER Error logging?!

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Message-ID: <aQRLccLXfgfoWaIP@wunner.de>
Date: Fri, 31 Oct 2025 06:38:57 +0100
From: Lukas Wunner <lukas@...ner.de>
To: Rodrigo Vivi <rodrigo.vivi@...el.com>
Cc: dri-devel@...ts.freedesktop.org, intel-xe@...ts.freedesktop.org,
	Dave Airlie <airlied@...il.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Simona Vetter <simona.vetter@...ll.ch>,
	Hawking Zhang <Hawking.Zhang@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Zack McKevitt <zachary.mckevitt@....qualcomm.com>,
	Aravind Iddamsetty <aravind.iddamsetty@...ux.intel.com>,
	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>
Subject: Re: DRM_RAS for CPER Error logging?!

On Thu, Oct 30, 2025 at 10:47:18AM -0400, Rodrigo Vivi wrote:
> On Tue, Oct 28, 2025 at 03:13:15PM -0400, Rodrigo Vivi wrote:
> > On Mon, Sep 29, 2025 at 05:44:12PM -0400, Rodrigo Vivi wrote:
> > 
> > Hey Dave, Sima, AMD folks, Qualcomm folks,
> 
> + Netlink list and maintainers to get some feedback on the netlink usage
> proposed here.
> 
> Specially to check if there's any concern with CPER blob going through
> netlink or if there's any size limitation or concern.

How large are those blobs?  If the netlink message exceeds PAGE_SIZE
because of the CPER blob, a workaround might be to attach it to the
skb as fragments with skb_add_rx_frag().

Thanks,

Lukas