On 3/20/22 12:39, Paolo Bonzini wrote:
+if (rc < 0) {
+if (rc != -ENXIO) {
+warn_report("KVM_GET_DEVICE_ATTR(0, KVM_X86_XCOMP_GUEST_SUPP) "
+"error: %d", rc);
Better as "error: %s", strerror(-rc) ?
r~
On Sun, Mar 20, 2022 at 20:39:14 +0100, Paolo Bonzini wrote:
> KVM support for AMX includes a new system attribute, KVM_X86_XCOMP_GUEST_SUPP.
> Commit 19db68ca68 ("x86: Grant AMX permission for guest", 2022-03-15) however
> did not fully consider the behavior on older kernels. First, it warns
>
KVM support for AMX includes a new system attribute, KVM_X86_XCOMP_GUEST_SUPP.
Commit 19db68ca68 ("x86: Grant AMX permission for guest", 2022-03-15) however
did not fully consider the behavior on older kernels. First, it warns
too aggressively. Second, it invokes the KVM_GET_DEVICE_ATTR ioctl
