On 23.04.22 19:40, Christoph Hellwig wrote:
+So instead of hardcoding Xen here, this seems like a candidate for
+#ifdef CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS
+int arch_has_restricted_virtio_memory_access(void)
+{
+ return (xen_has_restricted_virtio_memory_access() ||
+ cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT));
+}
another cc_platform_has flag.
I have a limited knowledge of x86 and Xen on x86.
Would the Xen specific bits fit into Confidential Computing Platform checks? I will let Juergen/Boris comment on this.