On 25.04.22 09:58, Christoph Hellwig wrote:
On Mon, Apr 25, 2022 at 09:47:49AM +0200, Juergen Gross wrote:Would the Xen specific bits fit into Confidential Computing Platform checks? I will let Juergen/Boris comment on this.I don't think cc_platform_has would be correct here. Xen certainly provides more isolation between guests and dom0, but "Confidential Computing" is basically orthogonal to that feature.The point of cc_platform_has is to remove all these open code checks. If a Xen hypervisor / dom0 can't access arbitrary guest memory for virtual I/O and we need special APIs for that it certainly false into the scope of cc_platform_has, even if the confientiality is rather limited.
In case the x86 maintainers are fine with that I won't oppose. Juergen
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