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From: Johannes Berg <johannes@sipsolutions.net>
To: "Michael S. Tsirkin" <mst@redhat.com>, linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, Neil Armstrong <narmstrong@baylibre.com>,
	David Airlie <airlied@linux.ie>,
	linux-remoteproc@vger.kernel.org,
	dri-devel@lists.freedesktop.org,
	virtualization@lists.linux-foundation.org,
	linux-s390@vger.kernel.org,
	"James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	linux-scsi@vger.kernel.org, v9fs-developer@lists.sourceforge.net,
	Asias He <asias@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
	linux-kbuild@vger.kernel.org, Jens Axboe <axboe@fb.com>,
	Michal Marek <mmarek@suse.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Matt Mackall <mpm@selenic.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-crypto@vger.kernel.org, netdev@vger.kernel.org,
	"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 10/10] virtio: enable endian checks for sparse builds
Date: Wed, 07 Dec 2016 07:25:51 +0100	[thread overview]
Message-ID: <1481091951.4092.12.camel@sipsolutions.net> (raw)
In-Reply-To: <1481038106-24899-11-git-send-email-mst@redhat.com> (sfid-20161206_164156_647850_329465D7)

On Tue, 2016-12-06 at 17:41 +0200, Michael S. Tsirkin wrote:

> It seems that there should be a better way to do it,
> but this works too.

In some cases there might be:

> --- a/drivers/s390/virtio/Makefile
> +++ b/drivers/s390/virtio/Makefile
> @@ -6,6 +6,8 @@
>  # it under the terms of the GNU General Public License (version 2
> only)
>  # as published by the Free Software Foundation.
>  
> +CFLAGS_virtio_ccw.o += -D__CHECK_ENDIAN__
> +CFLAGS_kvm_virtio.o += -D__CHECK_ENDIAN__
>  s390-virtio-objs := virtio_ccw.o
>  ifdef CONFIG_S390_GUEST_OLD_TRANSPORT
>  s390-virtio-objs += kvm_virtio.o

Here you could use

ccflags-y += -D__CHECK_ENDIAN__

for example, or even

subdir-ccflags-y += -D__CHECK_ENDIAN__

(in case any subdirs ever get added here)

> --- a/drivers/vhost/Makefile
> +++ b/drivers/vhost/Makefile
> @@ -1,3 +1,4 @@
> +ccflags-y := -D__CHECK_ENDIAN__

Looks like you did that here and in some other places though - so
perhaps the s390 one was intentionally different?

> --- a/net/packet/Makefile
> +++ b/net/packet/Makefile
> @@ -2,6 +2,7 @@
>  # Makefile for the packet AF.
>  #
>  
> +ccflags-y := -D__CHECK_ENDIAN__

Technically this is slightly more than advertised, but I guess that
still makes sense if it's clean now.

johannes

_______________________________________________
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Virtualization@lists.linux-foundation.org
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  parent reply	other threads:[~2016-12-07  6:25 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-06 15:40 [PATCH 00/10] virtio: sparse fixes Michael S. Tsirkin
2016-12-06 15:40 ` [PATCH 05/10] vhost: make interval tree static inline Michael S. Tsirkin
2016-12-07  4:16   ` Jason Wang
2016-12-06 15:40 ` [PATCH 06/10] vhost: add missing __user annotations Michael S. Tsirkin
2016-12-07  4:17   ` Jason Wang
2016-12-06 15:40 ` [PATCH 07/10] vsock/virtio: add a missing __le annotation Michael S. Tsirkin
2016-12-07  4:19   ` Jason Wang
2016-12-07 14:09   ` Stefan Hajnoczi
2016-12-06 15:41 ` [PATCH 08/10] vsock/virtio: mark an internal function static Michael S. Tsirkin
2016-12-07  4:21   ` Jason Wang
2016-12-08 14:25     ` Michael S. Tsirkin
2016-12-12  1:56       ` Jason Wang
2016-12-07 14:09   ` Stefan Hajnoczi
2016-12-06 15:41 ` [PATCH 09/10] vsock/virtio: fix src/dst cid format Michael S. Tsirkin
2016-12-07  4:31   ` Jason Wang
2016-12-11  2:54     ` Michael S. Tsirkin
2016-12-07 14:09   ` Stefan Hajnoczi
2016-12-06 15:41 ` [PATCH 10/10] virtio: enable endian checks for sparse builds Michael S. Tsirkin
2016-12-07  5:27   ` Jason Wang
2016-12-07  6:25   ` Johannes Berg [this message]
2016-12-07 13:22     ` Michael S. Tsirkin
2016-12-07  7:30   ` Christoph Hellwig
2016-12-07 14:09   ` Stefan Hajnoczi

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