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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-06 22:19:03 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-06 22:19:03 +0300 |
| commit | 5824f92463e978f27985b748c69d94ee7caa8230 (patch) | |
| tree | 8d1c79ca9cec0cfa73605bce551b82850135d7f0 /drivers/vfio/pci/vfio_pci_rdwr.c | |
| parent | 2fd8774c79a455a1f12f75208d96f2f0cc3728c9 (diff) | |
| parent | c6ef7fd40eddad38a8825cbd6bb2ce8bdbba88f5 (diff) | |
| download | linux-5824f92463e978f27985b748c69d94ee7caa8230.tar.xz | |
Merge tag 'vfio-v4.10-rc3' of git://github.com/awilliam/linux-vfio
Pull VFIO fixes from Alex Williamson:
- Add mtty sample driver properly into build system (Alex Williamson)
- Restore type1 mapping performance after mdev (Alex Williamson)
- Fix mdev device race (Alex Williamson)
- Cleanups to the mdev ABI used by vendor drivers (Alex Williamson)
- Build fix for old compilers (Arnd Bergmann)
- Fix sample driver error path (Dan Carpenter)
- Handle pci_iomap() error (Arvind Yadav)
- Fix mdev ioctl return type (Paul Gortmaker)
* tag 'vfio-v4.10-rc3' of git://github.com/awilliam/linux-vfio:
vfio-mdev: fix non-standard ioctl return val causing i386 build fail
vfio-pci: Handle error from pci_iomap
vfio-mdev: fix some error codes in the sample code
vfio-pci: use 32-bit comparisons for register address for gcc-4.5
vfio-mdev: Make mdev_device private and abstract interfaces
vfio-mdev: Make mdev_parent private
vfio-mdev: de-polute the namespace, rename parent_device & parent_ops
vfio-mdev: Fix remove race
vfio/type1: Restore mapping performance with mdev support
vfio-mdev: Fix mtty sample driver building
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_rdwr.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_rdwr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 5ffd1d9ad4bd..357243d76f10 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -193,7 +193,10 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, if (!vdev->has_vga) return -EINVAL; - switch (pos) { + if (pos > 0xbfffful) + return -EINVAL; + + switch ((u32)pos) { case 0xa0000 ... 0xbffff: count = min(count, (size_t)(0xc0000 - pos)); iomem = ioremap_nocache(0xa0000, 0xbffff - 0xa0000 + 1); |