Re: [PATCH 2/3] vfio/mdev: inline needed class_compat functionality

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On Thu, 12 Dec 2024 19:21:34 +0100
Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> But samples are not "real" and are not actually used.  If they were,
> then shouldn't they be in the real part of the kernel?
> 
> So what are we "breaking" here?

We'd be breaking the management of and use of Intel vGPU support on
older integrated graphics (GVT-g/KVMgt), as well as the ccw and ap
drivers on s390, which are mdev devices that expose disk and crypto
interfaces respectively, aiui.  These are drivers that exist in the
real part of the kernel[1][2][3].  Thanks,

Alex

[1] drivers/gpu/drm/i915/gvt/kvmgt.c
[2] drivers/s390/cio/vfio_ccw*
[3] drivers/s390/crypto/vfio_ap*





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