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Test Driving The QEMU-KVM KMS Driver

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Linux

Just hours ago a new Linux KMS driver entered the world for the Cirrus GPU. Yes, as in that from Cirrus Logic for an ancient CL-GD5446 ASIC, this was a 2D-only 64-bit VisualMedia accelerator. But, fortunately, it is not for the actual hardware itself but rather the virtual incarnation that is emulated by QEMU and QEMU-KVM. Those running a Linux KVM virtualization stack with QEMU and the Cirrus adapter can now benefit from a kernel mode-setting driver.

This KMS-only driver does not provide any 2D acceleration that is passed onto the host or anything, but just relies upon a shadow frame-buffer. So it is not nearly as advanced as what's offered by VirtualBox or VMware where there is not only 2D acceleration but also OpenGL / DirectX acceleration on the GPU. Granted, it is better than before: just a Cirrus X.Org DDX driver that does not do much good, and a step in the right direction.

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