From: kernel test robot <lkp@intel.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>, brouer@redhat.com
Cc: kbuild-all@lists.01.org, netdev@vger.kernel.org,
ilias.apalodimas@linaro.org, linux-kernel@vger.kernel.org,
"Matthew Wilcox \(Oracle\)" <willy@infradead.org>,
linux-mips@vger.kernel.org, linux-mm@kvack.org,
mcroce@linux.microsoft.com, linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/2] mm: Fix struct page layout on 32-bit systems
Date: Sat, 17 Apr 2021 09:08:41 +0800 [thread overview]
Message-ID: <202104170943.saIArN8X-lkp@intel.com> (raw)
In-Reply-To: <20210416230724.2519198-2-willy@infradead.org>
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Hi "Matthew,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.12-rc7]
[cannot apply to hnaz-linux-mm/master next-20210416]
[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/Matthew-Wilcox-Oracle/Change-struct-page-layout-for-page_pool/20210417-070951
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5e46d1b78a03d52306f21f77a4e4a144b6d31486
config: parisc-randconfig-s031-20210416 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-280-g2cd6d34e-dirty
# https://github.com/0day-ci/linux/commit/898e155048088be20b2606575a24108eacc4c91b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Matthew-Wilcox-Oracle/Change-struct-page-layout-for-page_pool/20210417-070951
git checkout 898e155048088be20b2606575a24108eacc4c91b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=parisc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from net/core/xdp.c:15:
include/net/page_pool.h: In function 'page_pool_get_dma_addr':
>> include/net/page_pool.h:203:40: warning: left shift count >= width of type [-Wshift-count-overflow]
203 | ret |= (dma_addr_t)page->dma_addr[1] << 32;
| ^~
include/net/page_pool.h: In function 'page_pool_set_dma_addr':
>> include/net/page_pool.h:211:28: warning: right shift count >= width of type [-Wshift-count-overflow]
211 | page->dma_addr[1] = addr >> 32;
| ^~
vim +203 include/net/page_pool.h
198
199 static inline dma_addr_t page_pool_get_dma_addr(struct page *page)
200 {
201 dma_addr_t ret = page->dma_addr[0];
202 if (sizeof(dma_addr_t) > sizeof(unsigned long))
> 203 ret |= (dma_addr_t)page->dma_addr[1] << 32;
204 return ret;
205 }
206
207 static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t addr)
208 {
209 page->dma_addr[0] = addr;
210 if (sizeof(dma_addr_t) > sizeof(unsigned long))
> 211 page->dma_addr[1] = addr >> 32;
212 }
213
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2021-04-17 1:09 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 23:07 [PATCH 0/2] Change struct page layout for page_pool Matthew Wilcox (Oracle)
2021-04-16 23:07 ` [PATCH 1/2] mm: Fix struct page layout on 32-bit systems Matthew Wilcox (Oracle)
2021-04-17 1:08 ` kernel test robot [this message]
2021-04-17 2:45 ` Matthew Wilcox
2021-04-17 18:32 ` Ilias Apalodimas
2021-04-17 20:22 ` Matthew Wilcox
2021-04-18 11:21 ` Ilias Apalodimas
2021-04-17 21:18 ` David Laight
2021-04-17 22:45 ` Matthew Wilcox
2021-04-20 2:48 ` Vineet Gupta
2021-04-20 3:10 ` Matthew Wilcox
2021-04-20 7:07 ` Arnd Bergmann
2021-04-20 21:14 ` Vineet Gupta
2021-04-20 21:20 ` Arnd Bergmann
2021-04-21 5:50 ` hch
2021-04-21 8:43 ` David Laight
2021-04-21 8:58 ` Arnd Bergmann
2021-04-20 7:39 ` Geert Uytterhoeven
2021-04-20 8:39 ` David Laight
2021-04-20 11:32 ` Matthew Wilcox
2021-04-17 7:34 ` Jesper Dangaard Brouer
2021-04-20 7:21 ` Rasmus Villemoes
2021-04-16 23:07 ` [PATCH 2/2] mm: Indicate pfmemalloc pages in compound_head Matthew Wilcox (Oracle)
2021-04-17 21:13 ` David Laight
2021-04-17 21:28 ` Matthew Wilcox
2021-04-20 4:03 ` [PATCH 0/2] Change struct page layout for page_pool Michael Ellerman
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