search for: bus_dma

ida(4) is a driver for older Compaq RAID adapters (PCI and EISA). It is one of the few remaining non-MPSAFE storage drivers. I have a patch to add locking to it, but while doing that I fixed several other issues including incorrect bus_dma support (it didn't handle deferred callbacks and EINPROGRESS at all). It also did not pre-allocate dma maps but attempted to create them on the fly (despite a comment claiming that it did pre-allocate them). It now probes disks using a configintrhook rather than using polled commands. The...

I just merged drm (Direct Rendering) from HEAD. - Support for latest Intel chips - Support and fixes for many AMD/ATI chips r500 and below - Support AMD/ATI IGP based chips (rs690/rs485) - Lots of code cleanups - Lots of other fixes and changes since the existing drm is 2+ years old If you are experiencing a "garbled" screen with

...ontact: Hongjiang Zhang <honzhan at microsoft.com> Contact: Dexuan Cui <decui at microsoft.com> Contact: Kylie Liang <kyliel at microsoft.com> This quarter, the Hyper-V storage driver was greatly improved: its performance was increased by a factor of 1.2-2 by applying BUS_DMA and UNMAP_IO, enlarging the request queue, and selecting the outgoing channel with the LUN considered; TRIM/UNMAP was enabled; and some critical bugs (PRs 209443, 211000, 212998) were fixed so that disk hot add/remove and VHDX online resizing should work now. The VMBus driver also r...

...ontact: Hongjiang Zhang <honzhan at microsoft.com> Contact: Dexuan Cui <decui at microsoft.com> Contact: Kylie Liang <kyliel at microsoft.com> This quarter, the Hyper-V storage driver was greatly improved: its performance was increased by a factor of 1.2-2 by applying BUS_DMA and UNMAP_IO, enlarging the request queue, and selecting the outgoing channel with the LUN considered; TRIM/UNMAP was enabled; and some critical bugs (PRs 209443, 211000, 212998) were fixed so that disk hot add/remove and VHDX online resizing should work now. The VMBus driver also r...