Re: [PATCH 09/11] lib/interval-tree: convert interval_tree to half closed intervals

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Hi Davidlohr,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20191003]

url:    https://github.com/0day-ci/linux/commits/Davidlohr-Bueso/lib-interval-tree-move-to-half-closed-intervals/20191004-042411
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/swab.h:5:0,
                    from include/uapi/linux/byteorder/big_endian.h:13,
                    from include/linux/byteorder/big_endian.h:5,
                    from arch/arm64/include/uapi/asm/byteorder.h:21,
                    from include/asm-generic/bitops/le.h:6,
                    from arch/arm64/include/asm/bitops.h:29,
                    from include/linux/bitops.h:26,
                    from include/linux/kernel.h:12,
                    from include/linux/clk.h:13,
                    from include/linux/amba/bus.h:14,
                    from drivers//iommu/virtio-iommu.c:10:
   drivers//iommu/virtio-iommu.c: In function 'viommu_replay_mappings':
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:130:32: note: in definition of macro '__swab64'
     (__builtin_constant_p((__u64)(x)) ? \
                                   ^
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:24:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:25:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:26:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:27:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x00000000ff000000ULL) <<  8) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
>> drivers//iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:28:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x000000ff00000000ULL) >>  8) | \
               ^
--
   In file included from include/linux/swab.h:5:0,
                    from include/uapi/linux/byteorder/big_endian.h:13,
                    from include/linux/byteorder/big_endian.h:5,
                    from arch/arm64/include/uapi/asm/byteorder.h:21,
                    from include/asm-generic/bitops/le.h:6,
                    from arch/arm64/include/asm/bitops.h:29,
                    from include/linux/bitops.h:26,
                    from include/linux/kernel.h:12,
                    from include/linux/clk.h:13,
                    from include/linux/amba/bus.h:14,
                    from drivers/iommu/virtio-iommu.c:10:
   drivers/iommu/virtio-iommu.c: In function 'viommu_replay_mappings':
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:130:32: note: in definition of macro '__swab64'
     (__builtin_constant_p((__u64)(x)) ? \
                                   ^
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:24:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:25:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:26:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:27:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x00000000ff000000ULL) <<  8) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:28:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x000000ff00000000ULL) >>  8) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:29:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:30:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:31:12: note: in definition of macro '___constant_swab64'
     (((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56)))
               ^
>> include/uapi/linux/byteorder/big_endian.h:31:43: note: in expansion of macro '__swab64'
    #define __cpu_to_le64(x) ((__force __le64)__swab64((x)))
                                              ^~~~~~~~
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:41: error: 'struct interval_tree_node' has no member named 'last'
       .virt_end = cpu_to_le64(mapping->iova.last),
                                            ^
   include/uapi/linux/swab.h:132:12: note: in definition of macro '__swab64'
     __fswab64(x))
               ^
>> include/linux/byteorder/generic.h:86:21: note: in expansion of macro '__cpu_to_le64'
    #define cpu_to_le64 __cpu_to_le64
                        ^~~~~~~~~~~~~
   drivers/iommu/virtio-iommu.c:403:16: note: in expansion of macro 'cpu_to_le64'
       .virt_end = cpu_to_le64(mapping->iova.last),
                   ^~~~~~~~~~~

vim +403 drivers//iommu/virtio-iommu.c

edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  379  
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  380  /*
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  381   * viommu_replay_mappings - re-send MAP requests
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  382   *
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  383   * When reattaching a domain that was previously detached from all endpoints,
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  384   * mappings were deleted from the device. Re-create the mappings available in
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  385   * the internal tree.
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  386   */
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  387  static int viommu_replay_mappings(struct viommu_domain *vdomain)
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  388  {
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  389  	int ret = 0;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  390  	unsigned long flags;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  391  	struct viommu_mapping *mapping;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  392  	struct interval_tree_node *node;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  393  	struct virtio_iommu_req_map map;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  394  
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  395  	spin_lock_irqsave(&vdomain->mappings_lock, flags);
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  396  	node = interval_tree_iter_first(&vdomain->mappings, 0, -1UL);
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  397  	while (node) {
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  398  		mapping = container_of(node, struct viommu_mapping, iova);
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  399  		map = (struct virtio_iommu_req_map) {
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  400  			.head.type	= VIRTIO_IOMMU_T_MAP,
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  401  			.domain		= cpu_to_le32(vdomain->id),
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  402  			.virt_start	= cpu_to_le64(mapping->iova.start),
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15 @403  			.virt_end	= cpu_to_le64(mapping->iova.last),
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  404  			.phys_start	= cpu_to_le64(mapping->paddr),
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  405  			.flags		= cpu_to_le32(mapping->flags),
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  406  		};
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  407  
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  408  		ret = viommu_send_req_sync(vdomain->viommu, &map, sizeof(map));
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  409  		if (ret)
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  410  			break;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  411  
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  412  		node = interval_tree_iter_next(node, 0, -1UL);
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  413  	}
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  414  	spin_unlock_irqrestore(&vdomain->mappings_lock, flags);
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  415  
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  416  	return ret;
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  417  }
edcd69ab9a323b Jean-Philippe Brucker 2019-01-15  418  

:::::: The code at line 403 was first introduced by commit
:::::: edcd69ab9a323b7ac7a86e1c44b6c9c46598391f iommu: Add virtio-iommu driver

:::::: TO: Jean-Philippe Brucker <jean-philippe.brucker@xxxxxxx>
:::::: CC: Michael S. Tsirkin <mst@xxxxxxxxxx>

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

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