From: kbuild test robot <lkp@intel.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: kbuild-all@01.org, joro@8bytes.org,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, dwmw2@infradead.org,
thunder.leizhen@huawei.com, lorenzo.pieralisi@arm.com,
ard.biesheuvel@linaro.org, Jonathan.Cameron@huawei.com,
nwatters@codeaurora.org, ray.jui@broadcom.com,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
David Airlie <airlied@linux.ie>,
Sudeep Dutt <sudeep.dutt@intel.com>,
Ashutosh Dixit <ashutosh.dixit@intel.com>
Subject: Re: [PATCH 4/4] iommu/iova: Make dma_32bit_pfn implicit
Date: Wed, 19 Jul 2017 23:07:38 +0800 [thread overview]
Message-ID: <201707192352.79mkRePJ%fengguang.wu@intel.com> (raw)
In-Reply-To: <a994de98adbd37e0755cce1184f06186e67db67b.1500396007.git.robin.murphy@arm.com>
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Hi Zhen,
[auto build test WARNING on iommu/next]
[also build test WARNING on v4.13-rc1]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Robin-Murphy/Optimise-64-bit-IOVA-allocations/20170719-060847
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm-multi_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm
All warnings (new ones prefixed by >>):
drivers/iommu/iova.c: In function 'init_iova_domain':
>> drivers/iommu/iova.c:53:41: warning: large integer implicitly truncated to unsigned type [-Woverflow]
iovad->dma_32bit_pfn = iova_pfn(iovad, 1ULL << 32);
^~~~
vim +53 drivers/iommu/iova.c
35
36 void
37 init_iova_domain(struct iova_domain *iovad, unsigned long granule,
38 unsigned long start_pfn)
39 {
40 /*
41 * IOVA granularity will normally be equal to the smallest
42 * supported IOMMU page size; both *must* be capable of
43 * representing individual CPU pages exactly.
44 */
45 BUG_ON((granule > PAGE_SIZE) || !is_power_of_2(granule));
46
47 spin_lock_init(&iovad->iova_rbtree_lock);
48 iovad->rbroot = RB_ROOT;
49 iovad->cached_node = NULL;
50 iovad->cached32_node = NULL;
51 iovad->granule = granule;
52 iovad->start_pfn = start_pfn;
> 53 iovad->dma_32bit_pfn = iova_pfn(iovad, 1ULL << 32);
54 init_iova_rcaches(iovad);
55 }
56 EXPORT_SYMBOL_GPL(init_iova_domain);
57
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2017-07-19 15:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-18 16:57 [PATCH 0/4] Optimise 64-bit IOVA allocations Robin Murphy
2017-07-18 16:57 ` [PATCH 1/4] iommu/iova: Optimise rbtree searching Robin Murphy
2017-07-18 16:57 ` [PATCH 2/4] iommu/iova: Optimise the padding calculation Robin Murphy
2017-07-18 16:57 ` [PATCH 3/4] iommu/iova: Extend rbtree node caching Robin Murphy
2017-07-18 16:57 ` [PATCH 4/4] iommu/iova: Make dma_32bit_pfn implicit Robin Murphy
2017-07-19 15:07 ` kbuild test robot [this message]
2017-07-20 2:55 ` Leizhen (ThunderTown)
2017-07-19 8:37 ` [PATCH 0/4] Optimise 64-bit IOVA allocations Ard Biesheuvel
2017-07-19 10:23 ` Robin Murphy
2017-07-21 9:48 ` Leizhen (ThunderTown)
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