Hi Johannes, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8ab774587903771821b59471cc723bba6d893942 commit: 68f5d3f3b6543266b29e047cfaf9842333019b4c um: add PCI over virtio emulation driver date: 5 months ago config: um-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 68f5d3f3b6543266b29e047cfaf9842333019b4c # save the attached .config to linux build tree make W=1 ARCH=um If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/vfio/pci/vfio_pci_rdwr.c: In function 'vfio_pci_vga_rw': drivers/vfio/pci/vfio_pci_rdwr.c:317:11: error: implicit declaration of function 'ioport_map' [-Werror=implicit-function-declaration] 317 | iomem = ioport_map(0x3b0, 0x3bb - 0x3b0 + 1); | ^~~~~~~~~~ 317 | iomem = ioport_map(0x3b0, 0x3bb - 0x3b0 + 1); | ^ drivers/vfio/pci/vfio_pci_rdwr.c:324:9: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 324 | iomem = ioport_map(0x3c0, 0x3df - 0x3c0 + 1); | ^ drivers/vfio/pci/vfio_pci_rdwr.c:338:15: error: implicit declaration of function 'ioport_unmap'; did you mean 'iommu_unmap'? [-Werror=implicit-function-declaration] 338 | is_ioport ? ioport_unmap(iomem) : iounmap(iomem); | ^~~~~~~~~~~~ | iommu_unmap cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_types.h:11: warning: "PAGE_SIZE" redefined 11 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:59, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/mutex.h:14, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/page.h:14: note: this is the location of the previous definition 14 | #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) | In file included from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_types.h:36: warning: "PAGE_OFFSET" redefined 36 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | In file included from arch/um/include/asm/thread_info.h:15, from include/linux/thread_info.h:59, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/mutex.h:14, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/page.h:93: note: this is the location of the previous definition 93 | #define PAGE_OFFSET (uml_physmem) | In file included from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_types.h:38: warning: "VM_DATA_DEFAULT_FLAGS" redefined 38 | #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC | In file included from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: include/linux/mm.h:396: note: this is the location of the previous definition 396 | #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_EXEC | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_64_types.h:15: warning: "THREAD_SIZE_ORDER" redefined 15 | #define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) | In file included from include/linux/thread_info.h:59, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/mutex.h:14, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/thread_info.h:9: note: this is the location of the previous definition 9 | #define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_64_types.h:16: warning: "THREAD_SIZE" redefined 16 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | In file included from include/linux/thread_info.h:59, from include/asm-generic/current.h:5, from ./arch/um/include/generated/asm/current.h:1, from include/linux/mutex.h:14, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/thread_info.h:10: note: this is the location of the previous definition 10 | #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE) | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: 75 | #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \ | In file included from arch/x86/um/asm/processor.h:41, from include/linux/mutex.h:19, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/processor-generic.h:71: note: this is the location of the previous definition 71 | #define TASK_SIZE (task_size) | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: 77 | #define TASK_SIZE_OF(child) ((test_tsk_thread_flag(child, TIF_ADDR32)) ? \ | In file included from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/pci.h:37, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: include/linux/sched.h:2041: note: this is the location of the previous definition 2041 | #define TASK_SIZE_OF(tsk) TASK_SIZE | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: 80 | #define STACK_TOP TASK_SIZE_LOW | In file included from arch/x86/um/asm/processor.h:41, from include/linux/mutex.h:19, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/processor-generic.h:79: note: this is the location of the previous definition 79 | #define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE) | In file included from arch/x86/include/asm/page_types.h:46, from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: 81 | #define STACK_TOP_MAX TASK_SIZE_MAX | In file included from arch/x86/um/asm/processor.h:41, from include/linux/mutex.h:19, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/pci.h:35, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/processor-generic.h:80: note: this is the location of the previous definition 80 | #define STACK_TOP_MAX STACK_TOP | In file included from arch/x86/include/asm/pgtable_types.h:8, from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/page_types.h:47: warning: "IOREMAP_MAX_ORDER" redefined 47 | #define IOREMAP_MAX_ORDER (PUD_SHIFT) | In file included from include/asm-generic/io.h:911, from arch/um/include/asm/io.h:24, from include/linux/io.h:13, from include/linux/irq.h:20, from include/asm-generic/hardirq.h:17, from arch/um/include/asm/hardirq.h:5, from include/linux/hardirq.h:11, from include/linux/interrupt.h:11, from include/linux/pci.h:38, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: include/linux/vmalloc.h:49: note: this is the location of the previous definition 49 | #define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */ | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:43: warning: "_PAGE_PRESENT" redefined 43 | #define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:13: note: this is the location of the previous definition 13 | #define _PAGE_PRESENT 0x001 | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:44: warning: "_PAGE_RW" redefined 44 | #define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:16: note: this is the location of the previous definition 16 | #define _PAGE_RW 0x020 | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:45: warning: "_PAGE_USER" redefined 45 | #define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:17: note: this is the location of the previous definition 17 | #define _PAGE_USER 0x040 | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:48: warning: "_PAGE_ACCESSED" redefined 48 | #define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:18: note: this is the location of the previous definition 18 | #define _PAGE_ACCESSED 0x080 | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:49: warning: "_PAGE_DIRTY" redefined 49 | #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:19: note: this is the location of the previous definition 19 | #define _PAGE_DIRTY 0x100 | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:120: warning: "_PAGE_PROTNONE" redefined 120 | #define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:21: note: this is the location of the previous definition 21 | #define _PAGE_PROTNONE 0x010 /* if the user mapped it with PROT_NONE; | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:128: warning: "_PAGE_CHG_MASK" redefined 128 | #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:55: note: this is the location of the previous definition 55 | #define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: 180 | #define PAGE_NONE __pg( 0| 0| 0|___A| 0| 0| 0|___G) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:58: note: this is the location of the previous definition 58 | #define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:181: warning: "PAGE_SHARED" redefined 181 | #define PAGE_SHARED __pg(__PP|__RW|_USR|___A|__NX| 0| 0| 0) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:59: note: this is the location of the previous definition 59 | #define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:185: warning: "PAGE_COPY" redefined 185 | #define PAGE_COPY __pg(__PP| 0|_USR|___A|__NX| 0| 0| 0) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:60: note: this is the location of the previous definition 60 | #define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:186: warning: "PAGE_READONLY" redefined 186 | #define PAGE_READONLY __pg(__PP| 0|_USR|___A|__NX| 0| 0| 0) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:61: note: this is the location of the previous definition 61 | #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:190: warning: "__PAGE_KERNEL_EXEC" redefined 190 | #define __PAGE_KERNEL_EXEC (__PP|__RW| 0|___A| 0|___D| 0|___G) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:56: note: this is the location of the previous definition 56 | #define __PAGE_KERNEL_EXEC \ | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:192: warning: "_KERNPG_TABLE" redefined 192 | #define _KERNPG_TABLE (__PP|__RW| 0|___A| 0|___D| 0| 0| _ENC) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:54: note: this is the location of the previous definition 54 | #define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY) | In file included from arch/x86/include/asm/memtype.h:6, from arch/x86/include/asm/mtrr.h:27, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:41: arch/x86/include/asm/pgtable_types.h:194: warning: "_PAGE_TABLE" redefined 194 | #define _PAGE_TABLE (__PP|__RW|_USR|___A| 0|___D| 0| 0| _ENC) | In file included from include/linux/pgtable.h:6, from include/linux/mm.h:33, from include/linux/scatterlist.h:8, from include/linux/dmapool.h:14, from include/linux/pci.h:1463, from drivers/infiniband/hw/qib/qib_wc_x86_64.c:40: arch/um/include/asm/pgtable.h:53: note: this is the location of the previous definition 53 | #define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY) .. vim +317 drivers/vfio/pci/vfio_pci_rdwr.c 84237a826b261d Alex Williamson 2013-02-18 290 84237a826b261d Alex Williamson 2013-02-18 291 ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, 84237a826b261d Alex Williamson 2013-02-18 292 size_t count, loff_t *ppos, bool iswrite) 84237a826b261d Alex Williamson 2013-02-18 293 { 84237a826b261d Alex Williamson 2013-02-18 294 int ret; 84237a826b261d Alex Williamson 2013-02-18 295 loff_t off, pos = *ppos & VFIO_PCI_OFFSET_MASK; 84237a826b261d Alex Williamson 2013-02-18 296 void __iomem *iomem = NULL; 84237a826b261d Alex Williamson 2013-02-18 297 unsigned int rsrc; 84237a826b261d Alex Williamson 2013-02-18 298 bool is_ioport; 84237a826b261d Alex Williamson 2013-02-18 299 ssize_t done; 84237a826b261d Alex Williamson 2013-02-18 300 84237a826b261d Alex Williamson 2013-02-18 301 if (!vdev->has_vga) 84237a826b261d Alex Williamson 2013-02-18 302 return -EINVAL; 84237a826b261d Alex Williamson 2013-02-18 303 45e86971448943 Arnd Bergmann 2016-12-30 304 if (pos > 0xbfffful) 45e86971448943 Arnd Bergmann 2016-12-30 305 return -EINVAL; 45e86971448943 Arnd Bergmann 2016-12-30 306 45e86971448943 Arnd Bergmann 2016-12-30 307 switch ((u32)pos) { 84237a826b261d Alex Williamson 2013-02-18 308 case 0xa0000 ... 0xbffff: 84237a826b261d Alex Williamson 2013-02-18 309 count = min(count, (size_t)(0xc0000 - pos)); 4bdc0d676a6431 Christoph Hellwig 2020-01-06 310 iomem = ioremap(0xa0000, 0xbffff - 0xa0000 + 1); 84237a826b261d Alex Williamson 2013-02-18 311 off = pos - 0xa0000; 84237a826b261d Alex Williamson 2013-02-18 312 rsrc = VGA_RSRC_LEGACY_MEM; 84237a826b261d Alex Williamson 2013-02-18 313 is_ioport = false; 84237a826b261d Alex Williamson 2013-02-18 314 break; 84237a826b261d Alex Williamson 2013-02-18 315 case 0x3b0 ... 0x3bb: 84237a826b261d Alex Williamson 2013-02-18 316 count = min(count, (size_t)(0x3bc - pos)); 84237a826b261d Alex Williamson 2013-02-18 @317 iomem = ioport_map(0x3b0, 0x3bb - 0x3b0 + 1); 84237a826b261d Alex Williamson 2013-02-18 318 off = pos - 0x3b0; 84237a826b261d Alex Williamson 2013-02-18 319 rsrc = VGA_RSRC_LEGACY_IO; 84237a826b261d Alex Williamson 2013-02-18 320 is_ioport = true; 84237a826b261d Alex Williamson 2013-02-18 321 break; 84237a826b261d Alex Williamson 2013-02-18 322 case 0x3c0 ... 0x3df: 84237a826b261d Alex Williamson 2013-02-18 323 count = min(count, (size_t)(0x3e0 - pos)); 84237a826b261d Alex Williamson 2013-02-18 324 iomem = ioport_map(0x3c0, 0x3df - 0x3c0 + 1); 84237a826b261d Alex Williamson 2013-02-18 325 off = pos - 0x3c0; 84237a826b261d Alex Williamson 2013-02-18 326 rsrc = VGA_RSRC_LEGACY_IO; 84237a826b261d Alex Williamson 2013-02-18 327 is_ioport = true; 84237a826b261d Alex Williamson 2013-02-18 328 break; 84237a826b261d Alex Williamson 2013-02-18 329 default: 84237a826b261d Alex Williamson 2013-02-18 330 return -EINVAL; 84237a826b261d Alex Williamson 2013-02-18 331 } 84237a826b261d Alex Williamson 2013-02-18 332 84237a826b261d Alex Williamson 2013-02-18 333 if (!iomem) 84237a826b261d Alex Williamson 2013-02-18 334 return -ENOMEM; 84237a826b261d Alex Williamson 2013-02-18 335 84237a826b261d Alex Williamson 2013-02-18 336 ret = vga_get_interruptible(vdev->pdev, rsrc); 84237a826b261d Alex Williamson 2013-02-18 337 if (ret) { 84237a826b261d Alex Williamson 2013-02-18 338 is_ioport ? ioport_unmap(iomem) : iounmap(iomem); 84237a826b261d Alex Williamson 2013-02-18 339 return ret; 84237a826b261d Alex Williamson 2013-02-18 340 } 84237a826b261d Alex Williamson 2013-02-18 341 bc93b9ae0151ae Alex Williamson 2020-08-17 342 /* bc93b9ae0151ae Alex Williamson 2020-08-17 343 * VGA MMIO is a legacy, non-BAR resource that hopefully allows bc93b9ae0151ae Alex Williamson 2020-08-17 344 * probing, so we don't currently worry about access in relation bc93b9ae0151ae Alex Williamson 2020-08-17 345 * to the memory enable bit in the command register. bc93b9ae0151ae Alex Williamson 2020-08-17 346 */ bc93b9ae0151ae Alex Williamson 2020-08-17 347 done = do_io_rw(vdev, false, iomem, buf, off, count, 0, 0, iswrite); 84237a826b261d Alex Williamson 2013-02-18 348 84237a826b261d Alex Williamson 2013-02-18 349 vga_put(vdev->pdev, rsrc); 84237a826b261d Alex Williamson 2013-02-18 350 84237a826b261d Alex Williamson 2013-02-18 351 is_ioport ? ioport_unmap(iomem) : iounmap(iomem); 84237a826b261d Alex Williamson 2013-02-18 352 84237a826b261d Alex Williamson 2013-02-18 353 if (done >= 0) 84237a826b261d Alex Williamson 2013-02-18 354 *ppos += done; 84237a826b261d Alex Williamson 2013-02-18 355 84237a826b261d Alex Williamson 2013-02-18 356 return done; 84237a826b261d Alex Williamson 2013-02-18 357 } 30656177c40804 Alex Williamson 2018-03-21 358 :::::: The code at line 317 was first introduced by commit :::::: 84237a826b261de7ddd3d09ee53ee68cb4138937 vfio-pci: Add support for VGA region access :::::: TO: Alex Williamson <alex.williamson(a)redhat.com&gt; :::::: CC: Alex Williamson <alex.williamson(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org