On Wed, 09 Jan 2019 16:10:51 -0700
Alex Williamson wrote:
> A kernel bug was introduced in v4.15 via commit 71a7d3d78e3c which
> adds a test for address space wrap-around in the vfio DMA unmap path.
> Unfortunately due to overflow, the kernel detects an unmap of the last
> page in the 64-bit addr
On Wed, Jan 09, 2019 at 04:10:51PM -0700, Alex Williamson wrote:
> A kernel bug was introduced in v4.15 via commit 71a7d3d78e3c which
> adds a test for address space wrap-around in the vfio DMA unmap path.
> Unfortunately due to overflow, the kernel detects an unmap of the last
> page in the 64-bit
A kernel bug was introduced in v4.15 via commit 71a7d3d78e3c which
adds a test for address space wrap-around in the vfio DMA unmap path.
Unfortunately due to overflow, the kernel detects an unmap of the last
page in the 64-bit address space as a wrap-around. In QEMU, a Q35
guest with VT-d emulatio
