Laszlo Ersek 8ddd12e53f OvmfPkg/VirtioGpuDxe: don't unmap VRING & BackingStore at ExitBootServices ... In one of the following patches, we'll change OvmfPkg/IoMmuDxe so that it unmaps all existent bus master operations (CommonBuffer, Read, Write) at ExitBootServices(), strictly after the individual device drivers abort pending DMA on the devices they manage, in their own ExitBootServices() notification functions. In preparation, remove the explicit VIRTIO_DEVICE_PROTOCOL.UnmapSharedBuffer() calls from VirtioGpuExitBoot(), originally added in commit 9bc5026c19 ("OvmfPkg/VirtioGpuDxe: map VRING for bus master common buffer operation", 2017-08-26) and commit f10ae92366 ("OvmfPkg/VirtioGpuDxe: map backing store to bus master device address", 2017-08-26). Add a DEBUG message so we can observe the ordering between VirtioGpuExitBoot() and the upcoming cleanup of mappings in OvmfPkg/IoMmuDxe. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Brijesh Singh <brijesh.singh@amd.com> Tested-by: Brijesh Singh <brijesh.singh@amd.com>		2017-09-08 20:23:53 +02:00
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Commands.c	OvmfPkg/VirtioGpuDxe: don't unmap VRING & BackingStore at ExitBootServices	2017-09-08 20:23:53 +02:00
DriverBinding.c	OvmfPkg/VirtioGpuDxe: helpers for backing store (de)allocation+(un)mapping	2017-09-01 14:28:20 +02:00
Gop.c	OvmfPkg/VirtioGpuDxe: map backing store to bus master device address	2017-09-01 14:28:22 +02:00
VirtioGpu.h	OvmfPkg/VirtioGpuDxe: map backing store to bus master device address	2017-09-01 14:28:22 +02:00
VirtioGpu.inf	OvmfPkg/VirtioGpuDxe: implement EFI_GRAPHICS_OUTPUT_PROTOCOL	2016-09-01 22:55:53 +02:00