Re: [Virtual ppce500] virtio_gpu virtio0: swiotlb buffer is full

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On 18 August 2020 at 10:18 am, Gerd Hoffmann wrote:
On Mon, Aug 17, 2020 at 11:19:58AM +0200, Christian Zigotzky wrote:
Hello

I compiled the RC1 of kernel 5.9 today. Unfortunately the issue with the
VirtIO-GPU (see below) still exists. Therefore we still need the patch (see
below) for using the VirtIO-GPU in a virtual e5500 PPC64 QEMU machine.
It is fixed in drm-misc-next (commit 51c3b0cc32d2e17581fce5b487ee95bbe9e8270a).

Will cherry-pick into drm-misc-fixes once the branch is 5.9-based, which
in turn should bring it to 5.9-rc2 or -rc3.

take care,
   Gerd

Hello Gerd,

I compiled a new kernel with the latest DRM misc updates today. The patch is included in these updates.

This kernel works with the VirtIO-GPU in a virtual e5500 QEMU/KVM HV machine on my X5000.

Unfortunately I can only use the VirtIO-GPU (Monitor: Red Hat, Inc. 8") with a resolution of 640x480. If I set a higher resolution then the guest disables the monitor.
I can use higher resolutions with the stable kernel 5.8 and the VirtIO-GPU.

Please check the latest DRM updates.

Thanks,
Christian
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