Messages in this thread | | | Date | Thu, 1 Oct 2015 22:47:13 +0800 | From | kbuild test robot <> | Subject | Re: [PATCH 1/2] iommu/vt-d: Split iommu_prepare_identity_map |
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Hi Joerg,
[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
config: ia64-allyesconfig (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 git checkout 75170658f4350889e0d0d404c5bb17179797bd47 # save the attached .config to linux build tree make.cross ARCH=ia64
All warnings (new ones prefixed by >>):
drivers/iommu/intel-iommu.c: In function 'domain_prepare_identity_map': >> drivers/iommu/intel-iommu.c:2437:6: warning: unused variable 'ret' [-Wunused-variable] int ret; ^
vim +/ret +2437 drivers/iommu/intel-iommu.c
ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2421 /* ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2422 * RMRR range might have overlap with physical memory range, ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2423 * clear it first ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2424 */ c5395d5c drivers/pci/intel-iommu.c David Woodhouse 2009-06-28 2425 dma_pte_clear_range(domain, first_vpfn, last_vpfn); ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2426 c5395d5c drivers/pci/intel-iommu.c David Woodhouse 2009-06-28 2427 return domain_pfn_mapping(domain, first_vpfn, first_vpfn, c5395d5c drivers/pci/intel-iommu.c David Woodhouse 2009-06-28 2428 last_vpfn - first_vpfn + 1, ba395927 drivers/pci/intel-iommu.c Keshavamurthy, Anil S 2007-10-21 2429 DMA_PTE_READ|DMA_PTE_WRITE); b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2430 } b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2431 75170658 drivers/iommu/intel-iommu.c Joerg Roedel 2015-10-01 2432 static int domain_prepare_identity_map(struct device *dev, 75170658 drivers/iommu/intel-iommu.c Joerg Roedel 2015-10-01 2433 struct dmar_domain *domain, b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2434 unsigned long long start, b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2435 unsigned long long end) b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2436 { b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 @2437 int ret; b213203e drivers/pci/intel-iommu.c David Woodhouse 2009-06-26 2438 19943b0e drivers/pci/intel-iommu.c David Woodhouse 2009-08-04 2439 /* For _hardware_ passthrough, don't bother. But for software 19943b0e drivers/pci/intel-iommu.c David Woodhouse 2009-08-04 2440 passthrough, we do it anyway -- it may indicate a memory 19943b0e drivers/pci/intel-iommu.c David Woodhouse 2009-08-04 2441 range which is reserved in E820, so which didn't get set 19943b0e drivers/pci/intel-iommu.c David Woodhouse 2009-08-04 2442 up to start with in si_domain */ 19943b0e drivers/pci/intel-iommu.c David Woodhouse 2009-08-04 2443 if (domain == si_domain && hw_pass_through) { 9f10e5bf drivers/iommu/intel-iommu.c Joerg Roedel 2015-06-12 2444 pr_warn("Ignoring identity map for HW passthrough device %s [0x%Lx - 0x%Lx]\n", 0b9d9753 drivers/iommu/intel-iommu.c David Woodhouse 2014-03-09 2445 dev_name(dev), start, end);
:::::: The code at line 2437 was first introduced by commit :::::: b213203e475212a69ad6fedfb73464087e317148 intel-iommu: Create new iommu_domain_identity_map() function
:::::: TO: David Woodhouse <David.Woodhouse@intel.com> :::::: CC: David Woodhouse <David.Woodhouse@intel.com>
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