On 4/24/22 12:53 PM, Oleksandr wrote:
On 23.04.22 19:40, Christoph Hellwig wrote:
+
+#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));
+}
So instead of hardcoding Xen here, this seems like a candidate for
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.
This is unrelated to confidential so I don't think we can add another CC_ flag.
Would arch/x86/kernel/cpu/hypervisor.c be a better home for this?
-boris
