Re: [PATCH] pci: restrict 64-bit pci device to assign resource from behind of max_pfn

From: Wenlin Kang
Date: Fri Oct 16 2015 - 02:29:16 EST


On 2015å10æ15æ 19:32, kbuild test robot wrote:
Hi Wenlin,

[auto build test ERROR on pci/next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url: https://github.com/0day-ci/linux/commits/Wenlin-Kang/pci-restrict-64-bit-pci-device-to-assign-resource-from-behind-of-max_pfn/20151015-184913
config: mips-fuloong2e_defconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=mips

All errors (new ones prefixed by >>):

drivers/pci/setup-res.c: In function '__pci_assign_resource':
drivers/pci/setup-res.c:224:6: error: 'max_pfn' undeclared (first use in this function)
(max_pfn + 1) << PAGE_SHIFT : PCIBIOS_MIN_MEM;
^
drivers/pci/setup-res.c:224:6: note: each undeclared identifier is reported only once for each function it appears in

vim +/max_pfn +224 drivers/pci/setup-res.c

218 * For 64-bit pci device, assign resource start from the next page
219 * boundary above the maximum physical page address
220 */
221 resource_size_t min_iomem;
222
223 min_iomem = (res->flags & IORESOURCE_MEM_64) ?
> 224 (max_pfn + 1) << PAGE_SHIFT : PCIBIOS_MIN_MEM;
225 min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : min_iomem;
226 #else
227 min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation


Hi

Thanks you point out this, due to I built it on x86 previously , so don't see the error.

After added "#include <linux/bootmem.h>" in drivers/pci/setup-res.c, it will be ok.

--
Thanks,
Wenlin Kang

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