Hi Wei, I love your patch! Perhaps something to improve: [auto build test WARNING 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-allmodconfig (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 warnings (new ones prefixed by >>): In file included from include/linux/printk.h:7:0, from include/linux/kernel.h:15, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/video/fbdev/hyperv_fb.c:48: drivers/video/fbdev/hyperv_fb.c: In function 'hvfb_get_phymem': include/linux/kern_levels.h:5:18: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'phys_addr_t {aka unsigned int}' [-Wformat=] #define KERN_SOH "\001" /* ASCII Start Of Header */ ^ include/linux/kern_levels.h:14:19: note: in expansion of macro 'KERN_SOH' #define KERN_INFO KERN_SOH "6" /* informational */ ^~~~~~~~ include/linux/printk.h:311:9: note: in expansion of macro 'KERN_INFO' printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~ >> drivers/video/fbdev/hyperv_fb.c:1003:2: note: in expansion of macro 'pr_info' pr_info("Allocated %d pages starts at physical addr 0x%llx\n", ^~~~~~~ vim +/pr_info +1003 drivers/video/fbdev/hyperv_fb.c 955 956 /* 957 * Allocate enough contiguous physical memory. 958 * Return physical address if succeeded or -1 if failed. 959 */ 960 static phys_addr_t hvfb_get_phymem(struct hv_device *hdev, 961 unsigned int request_size) 962 { 963 struct page *page = NULL; 964 dma_addr_t dma_handle; 965 void *vmem; 966 unsigned int request_pages; 967 phys_addr_t paddr = 0; 968 unsigned int order = get_order(request_size); 969 970 if (request_size == 0) 971 return -1; 972 973 /* Try to call alloc_pages if the size is less than 2^MAX_ORDER */ 974 if (order < MAX_ORDER) { 975 page = alloc_pages(GFP_KERNEL | __GFP_ZERO, order); 976 if (!page) 977 return -1; 978 979 paddr = (page_to_pfn(page) << PAGE_SHIFT); 980 request_pages = (1 << order); 981 goto get_phymem1; 982 } 983 984 /* Allocate from CMA */ 985 if (hdev == NULL) 986 return -1; 987 988 hdev->device.coherent_dma_mask = DMA_BIT_MASK(64); 989 990 request_pages = (round_up(request_size, PAGE_SIZE) >> PAGE_SHIFT); 991 992 vmem = dma_alloc_coherent(&hdev->device, 993 request_pages * PAGE_SIZE, 994 &dma_handle, 995 GFP_KERNEL | __GFP_NOWARN); 996 997 if (!vmem) 998 return -1; 999 1000 paddr = virt_to_phys(vmem); 1001 1002 get_phymem1: > 1003 pr_info("Allocated %d pages starts at physical addr 0x%llx\n", 1004 request_pages, paddr); 1005 1006 return paddr; 1007 } 1008 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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