linux-kernel - Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error: uuid/uuid.h: No such file or directory

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Message-ID: <20250407174910.GA1725933@nvidia.com>
Date: Mon, 7 Apr 2025 14:49:10 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Dan Williams <dan.j.williams@...el.com>
Cc: Dave Jiang <dave.jiang@...el.com>,
	"Paul E. McKenney" <paulmck@...nel.org>, linux-cxl@...r.kernel.org,
	dave@...olabs.net, jonathan.cameron@...wei.com,
	alison.schofield@...el.com, vishal.l.verma@...el.com,
	ira.weiny@...el.com, gourry@...rry.net,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	sfr@...b.auug.org.au
Subject: Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error:
 uuid/uuid.h: No such file or directory

On Mon, Mar 31, 2025 at 09:54:55AM -0700, Dan Williams wrote:
> >From 6fbca9bb3e29f3a205861b9489a8fba46506e107 Mon Sep 17 00:00:00 2001
> From: Dan Williams <dan.j.williams@...el.com>
> Date: Mon, 31 Mar 2025 09:43:48 -0700
> Subject: [PATCH] fwctl/cxl: Fix uuid_t usage in uapi
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 8bit
> 
> The uuid_t type is kernel internal, and Paul reports the following build
> error when it is used in a uapi header:
> 
>     usr/include/cxl/features.h:59:9: error: unknown type name ‘uuid_t’
> 
> Create a uuid type (__uapi_uuid_t) compatible with the longstanding
> definition uuid/uuid.h for userspace builds, and use uuid_t directly for
> kernel builds.
> 
> Suggested-by: Jason Gunthorpe <jgg@...dia.com>
> Reported-by: "Paul E. McKenney" <paulmck@...nel.org>
> Closes: http://lore.kernel.org/f6489337-67c7-48c8-b48a-58603ec15328@paulmck-laptop
> Fixes: 9b8e73cdb141 ("cxl: Move cxl feature command structs to user header")
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> ---
>  include/uapi/cxl/features.h | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)

Applied thanks

Jason