Re: [PATCH v2] video: hyperv: hyperv_fb: Use physical memory for fb on HyperV Gen 1 VMs.
From: kbuild test robot
Date: Mon Nov 25 2019 - 08:08:34 EST
Hi Wei,
I love your patch! Yet something to improve:
[auto build test ERROR on next-20191122]
[cannot apply to linus/master v5.4-rc8 v5.4-rc7 v5.4-rc6 v5.4]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Wei-Hu/video-hyperv-hyperv_fb-Use-physical-memory-for-fb-on-HyperV-Gen-1-VMs/20191124-163533
base: b9d3d01405061bb42358fe53f824e894a1922ced
config: i386-randconfig-b003-20191125 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
ld: kernel/dma/contiguous.o: in function `dma_alloc_from_contiguous':
>> kernel/dma/contiguous.c:199: undefined reference to `cma_alloc'
>> ld: kernel/dma/contiguous.c:199: undefined reference to `cma_alloc'
ld: kernel/dma/contiguous.o: in function `dma_release_from_contiguous':
>> kernel/dma/contiguous.c:215: undefined reference to `cma_release'
>> ld: kernel/dma/contiguous.c:215: undefined reference to `cma_release'
ld: kernel/dma/contiguous.o: in function `dma_alloc_contiguous':
kernel/dma/contiguous.c:248: undefined reference to `cma_alloc'
ld: kernel/dma/contiguous.o: in function `dma_free_contiguous':
kernel/dma/contiguous.c:267: undefined reference to `cma_release'
ld: kernel/dma/contiguous.c:267: undefined reference to `cma_release'
ld: kernel/dma/contiguous.o: in function `dma_contiguous_reserve_area':
>> kernel/dma/contiguous.c:169: undefined reference to `cma_declare_contiguous'
>> ld: kernel/dma/contiguous.c:175: undefined reference to `cma_get_size'
>> ld: kernel/dma/contiguous.c:175: undefined reference to `cma_get_base'
vim +199 kernel/dma/contiguous.c
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 145
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 146 /**
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 147 * dma_contiguous_reserve_area() - reserve custom contiguous area
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 148 * @size: Size of the reserved area (in bytes),
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 149 * @base: Base address of the reserved area optional, use 0 for any
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 150 * @limit: End address of the reserved memory (optional, 0 for any).
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 151 * @res_cma: Pointer to store the created cma region.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 152 * @fixed: hint about where to place the reserved area
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 153 *
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 154 * This function reserves memory from early allocator. It should be
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 155 * called by arch specific code once the early allocator (memblock or bootmem)
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 156 * has been activated and all other subsystems have already allocated/reserved
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 157 * memory. This function allows to create custom reserved areas for specific
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 158 * devices.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 159 *
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 160 * If @fixed is true, reserve contiguous area at exactly @base. If false,
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 161 * reserve in range from @base to @limit.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 162 */
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 163 int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base,
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 164 phys_addr_t limit, struct cma **res_cma,
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 165 bool fixed)
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 166 {
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 167 int ret;
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 168
f318dd083c8128 drivers/base/dma-contiguous.c Laura Abbott 2017-04-18 @169 ret = cma_declare_contiguous(base, size, limit, 0, 0, fixed,
f318dd083c8128 drivers/base/dma-contiguous.c Laura Abbott 2017-04-18 170 "reserved", res_cma);
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 171 if (ret)
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 172 return ret;
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 173
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 174 /* Architecture specific contiguous memory fixup. */
a254129e8686bf drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 @175 dma_contiguous_early_fixup(cma_get_base(*res_cma),
a254129e8686bf drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 176 cma_get_size(*res_cma));
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 177
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 178 return 0;
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 179 }
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 180
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 181 /**
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 182 * dma_alloc_from_contiguous() - allocate pages from contiguous area
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 183 * @dev: Pointer to device for which the allocation is performed.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 184 * @count: Requested number of pages.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 185 * @align: Requested alignment of pages (in PAGE_SIZE order).
d834c5ab83febf kernel/dma/contiguous.c Marek Szyprowski 2018-08-17 186 * @no_warn: Avoid printing message about failed allocation.
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 187 *
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 188 * This function allocates memory buffer for specified device. It uses
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 189 * device specific contiguous memory area if available or the default
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 190 * global one. Requires architecture specific dev_get_cma_area() helper
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 191 * function.
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 192 */
67a2e213e7e937 drivers/base/dma-contiguous.c Rohit Vaswani 2015-10-22 193 struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
d834c5ab83febf kernel/dma/contiguous.c Marek Szyprowski 2018-08-17 194 unsigned int align, bool no_warn)
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 195 {
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 196 if (align > CONFIG_CMA_ALIGNMENT)
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 197 align = CONFIG_CMA_ALIGNMENT;
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 198
d834c5ab83febf kernel/dma/contiguous.c Marek Szyprowski 2018-08-17 @199 return cma_alloc(dev_get_cma_area(dev), count, align, no_warn);
c64be2bb1c6eb4 drivers/base/dma-contiguous.c Marek Szyprowski 2011-12-29 200 }
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 201
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 202 /**
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 203 * dma_release_from_contiguous() - release allocated pages
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 204 * @dev: Pointer to device for which the pages were allocated.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 205 * @pages: Allocated pages.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 206 * @count: Number of allocated pages.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 207 *
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 208 * This function releases memory allocated by dma_alloc_from_contiguous().
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 209 * It returns false when provided pages do not belong to contiguous area and
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 210 * true otherwise.
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 211 */
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 212 bool dma_release_from_contiguous(struct device *dev, struct page *pages,
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 213 int count)
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 214 {
a254129e8686bf drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 @215 return cma_release(dev_get_cma_area(dev), pages, count);
3162bbd7e65b9c drivers/base/dma-contiguous.c Joonsoo Kim 2014-08-06 216 }
de9e14eebf33a6 drivers/base/dma-contiguous.c Marek Szyprowski 2014-10-13 217
:::::: The code at line 199 was first introduced by commit
:::::: d834c5ab83febf9624ad3b16c3c348aa1e02014c kernel/dma: remove unsupported gfp_mask parameter from dma_alloc_from_contiguous()
:::::: TO: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
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