Linux-PCI Archive on lore.kernel.org
 help / color / Atom feed
From: kernel test robot <lkp@intel.com>
To: Sherry Sun <sherry.sun@nxp.com>,
	hch@infradead.org, sudeep.dutt@intel.com,
	ashutosh.dixit@intel.com, arnd@arndb.de,
	gregkh@linuxfoundation.org, kishon@ti.com,
	lorenzo.pieralisi@arm.com
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
	linux-pci@vger.kernel.org, linux-imx@nxp.com
Subject: Re: [PATCH V3 1/4] misc: vop: change the way of allocating vring and device page
Date: Thu, 22 Oct 2020 15:58:47 +0800
Message-ID: <202010221544.y0VPwYec-lkp@intel.com> (raw)
In-Reply-To: <20201022050638.29641-2-sherry.sun@nxp.com>


[-- Attachment #1: Type: text/plain, Size: 3037 bytes --]

Hi Sherry,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on soc/for-next linus/master v5.9 next-20201022]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Sherry-Sun/Change-vring-space-from-nomal-memory-to-dma-coherent-memory/20201022-131008
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git f3277cbfba763cd2826396521b9296de67cf1bbc
config: i386-randconfig-s002-20201022 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-dirty
        # https://github.com/0day-ci/linux/commit/6851e84ec2f16ab12b04b2a5bf61b05465d450e6
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sherry-Sun/Change-vring-space-from-nomal-memory-to-dma-coherent-memory/20201022-131008
        git checkout 6851e84ec2f16ab12b04b2a5bf61b05465d450e6
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/misc/mic/vop/vop_vringh.c:1052:29: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long @@     got restricted __le64 [usertype] address @@
>> drivers/misc/mic/vop/vop_vringh.c:1052:29: sparse:     expected unsigned long
>> drivers/misc/mic/vop/vop_vringh.c:1052:29: sparse:     got restricted __le64 [usertype] address

vim +1052 drivers/misc/mic/vop/vop_vringh.c

  1024	
  1025	static inline int
  1026	vop_query_offset(struct vop_vdev *vdev, unsigned long offset,
  1027			 unsigned long *size, unsigned long *pa)
  1028	{
  1029		struct vop_device *vpdev = vdev->vpdev;
  1030		struct mic_vqconfig *vqconfig = mic_vq_config(vdev->dd);
  1031		unsigned long start = MIC_DP_SIZE;
  1032		int i;
  1033	
  1034		/*
  1035		 * MMAP interface is as follows:
  1036		 * offset				region
  1037		 * 0x0					virtio device_page
  1038		 * 0x1000				first vring
  1039		 * 0x1000 + size of 1st vring		second vring
  1040		 * ....
  1041		 */
  1042		if (!offset) {
  1043			*pa = virt_to_phys(vpdev->hw_ops->get_dp(vpdev));
  1044			*size = MIC_DP_SIZE;
  1045			return 0;
  1046		}
  1047	
  1048		for (i = 0; i < vdev->dd->num_vq; i++) {
  1049			struct vop_vringh *vvr = &vdev->vvr[i];
  1050	
  1051			if (offset == start) {
> 1052				*pa = vqconfig[i].address;
  1053				*size = vvr->vring.len;
  1054				return 0;
  1055			}
  1056			start += vvr->vring.len;
  1057		}
  1058		return -1;
  1059	}
  1060	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 36245 bytes --]

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-22  5:06 [PATCH V3 0/4] Change vring space from nomal memory to dma coherent memory Sherry Sun
2020-10-22  5:06 ` [PATCH V3 1/4] misc: vop: change the way of allocating vring and device page Sherry Sun
2020-10-22  7:58   ` kernel test robot [this message]
2020-10-23  9:25   ` Christoph Hellwig
2020-10-26  2:54     ` Sherry Sun
2020-10-22  5:06 ` [PATCH V3 2/4] misc: vop: do not allocate and reassign the used ring Sherry Sun
2020-10-22  8:53   ` kernel test robot
2020-10-23  9:26   ` Christoph Hellwig
2020-10-26  3:04     ` Sherry Sun
2020-10-27  6:28       ` gregkh
2020-10-22  5:06 ` [PATCH V3 3/4] misc: vop: simply return the saved dma address instead of virt_to_phys Sherry Sun
2020-10-22  5:06 ` [PATCH V3 4/4] misc: vop: mapping kernel memory to user space as noncached Sherry Sun
2020-10-23  9:28   ` Christoph Hellwig

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=202010221544.y0VPwYec-lkp@intel.com \
    --to=lkp@intel.com \
    --cc=arnd@arndb.de \
    --cc=ashutosh.dixit@intel.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=hch@infradead.org \
    --cc=kbuild-all@lists.01.org \
    --cc=kishon@ti.com \
    --cc=linux-imx@nxp.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=lorenzo.pieralisi@arm.com \
    --cc=sherry.sun@nxp.com \
    --cc=sudeep.dutt@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-PCI Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-pci/0 linux-pci/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-pci linux-pci/ https://lore.kernel.org/linux-pci \
		linux-pci@vger.kernel.org
	public-inbox-index linux-pci

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-pci


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git