diff options
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_rdwr.c | 2 | ||||
| -rw-r--r-- | drivers/vfio/platform/reset/vfio_platform_amdxgbe.c | 4 | ||||
| -rw-r--r-- | drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c | 2 | ||||
| -rw-r--r-- | drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c | 2 | ||||
| -rw-r--r-- | drivers/vfio/platform/vfio_platform_common.c | 4 | ||||
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 35 |
6 files changed, 14 insertions, 35 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 0120d8324a40..a87992892a9f 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -230,7 +230,7 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, switch ((u32)pos) { case 0xa0000 ... 0xbffff: count = min(count, (size_t)(0xc0000 - pos)); - iomem = ioremap_nocache(0xa0000, 0xbffff - 0xa0000 + 1); + iomem = ioremap(0xa0000, 0xbffff - 0xa0000 + 1); off = pos - 0xa0000; rsrc = VGA_RSRC_LEGACY_MEM; is_ioport = false; diff --git a/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c b/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c index ecfc908de30f..abdca900802d 100644 --- a/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c +++ b/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c @@ -54,13 +54,13 @@ static int vfio_platform_amdxgbe_reset(struct vfio_platform_device *vdev) if (!xgmac_regs->ioaddr) { xgmac_regs->ioaddr = - ioremap_nocache(xgmac_regs->addr, xgmac_regs->size); + ioremap(xgmac_regs->addr, xgmac_regs->size); if (!xgmac_regs->ioaddr) return -ENOMEM; } if (!xpcs_regs->ioaddr) { xpcs_regs->ioaddr = - ioremap_nocache(xpcs_regs->addr, xpcs_regs->size); + ioremap(xpcs_regs->addr, xpcs_regs->size); if (!xpcs_regs->ioaddr) return -ENOMEM; } diff --git a/drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c b/drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c index 16165a62b86d..96064ef8f629 100644 --- a/drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c +++ b/drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c @@ -82,7 +82,7 @@ static int vfio_platform_bcmflexrm_reset(struct vfio_platform_device *vdev) /* Map FlexRM ring registers if not mapped */ if (!reg->ioaddr) { - reg->ioaddr = ioremap_nocache(reg->addr, reg->size); + reg->ioaddr = ioremap(reg->addr, reg->size); if (!reg->ioaddr) return -ENOMEM; } diff --git a/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c b/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c index f67bab547501..09a9453b75c5 100644 --- a/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c +++ b/drivers/vfio/platform/reset/vfio_platform_calxedaxgmac.c @@ -52,7 +52,7 @@ static int vfio_platform_calxedaxgmac_reset(struct vfio_platform_device *vdev) if (!reg->ioaddr) { reg->ioaddr = - ioremap_nocache(reg->addr, reg->size); + ioremap(reg->addr, reg->size); if (!reg->ioaddr) return -ENOMEM; } diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index e8f2bdbe0542..c0771a9567fb 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -409,7 +409,7 @@ static ssize_t vfio_platform_read_mmio(struct vfio_platform_region *reg, if (!reg->ioaddr) { reg->ioaddr = - ioremap_nocache(reg->addr, reg->size); + ioremap(reg->addr, reg->size); if (!reg->ioaddr) return -ENOMEM; @@ -486,7 +486,7 @@ static ssize_t vfio_platform_write_mmio(struct vfio_platform_region *reg, if (!reg->ioaddr) { reg->ioaddr = - ioremap_nocache(reg->addr, reg->size); + ioremap(reg->addr, reg->size); if (!reg->ioaddr) return -ENOMEM; diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 2ada8e6cdb88..a177bf2c6683 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -309,9 +309,8 @@ static int put_pfn(unsigned long pfn, int prot) { if (!is_invalid_reserved_pfn(pfn)) { struct page *page = pfn_to_page(pfn); - if (prot & IOMMU_WRITE) - SetPageDirty(page); - put_page(page); + + unpin_user_pages_dirty_lock(&page, 1, prot & IOMMU_WRITE); return 1; } return 0; @@ -322,7 +321,6 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr, { struct page *page[1]; struct vm_area_struct *vma; - struct vm_area_struct *vmas[1]; unsigned int flags = 0; int ret; @@ -330,33 +328,14 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr, flags |= FOLL_WRITE; down_read(&mm->mmap_sem); - if (mm == current->mm) { - ret = get_user_pages(vaddr, 1, flags | FOLL_LONGTERM, page, - vmas); - } else { - ret = get_user_pages_remote(NULL, mm, vaddr, 1, flags, page, - vmas, NULL); - /* - * The lifetime of a vaddr_get_pfn() page pin is - * userspace-controlled. In the fs-dax case this could - * lead to indefinite stalls in filesystem operations. - * Disallow attempts to pin fs-dax pages via this - * interface. - */ - if (ret > 0 && vma_is_fsdax(vmas[0])) { - ret = -EOPNOTSUPP; - put_page(page[0]); - } - } - up_read(&mm->mmap_sem); - + ret = pin_user_pages_remote(NULL, mm, vaddr, 1, flags | FOLL_LONGTERM, + page, NULL, NULL); if (ret == 1) { *pfn = page_to_pfn(page[0]); - return 0; + ret = 0; + goto done; } - down_read(&mm->mmap_sem); - vaddr = untagged_addr(vaddr); vma = find_vma_intersection(mm, vaddr, vaddr + 1); @@ -366,7 +345,7 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr, if (is_invalid_reserved_pfn(*pfn)) ret = 0; } - +done: up_read(&mm->mmap_sem); return ret; } |