Re: [PATCH] vdpa/mlx5: set_features should allow reset to zero
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2021-02-28 21:36:49
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On Wed, Feb 24, 2021 at 10:24:41AM -0800, Si-Wei Liu wrote:
quoted
Detecting it isn't enough though, we will need a new ioctl to notify the kernel that it's a legacy guest. Ugh :(Well, although I think adding an ioctl is doable, may I know what the use case there will be for kernel to leverage such info directly? Is there a case QEMU can't do with dedicate ioctls later if there's indeed differentiation (legacy v.s. modern) needed?
BTW a good API could be #define VHOST_SET_ENDIAN _IOW(VHOST_VIRTIO, ?, int) #define VHOST_GET_ENDIAN _IOW(VHOST_VIRTIO, ?, int) we did it per vring but maybe that was a mistake ... -- MST _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization