linux-headers: Update headers to v5.17-rc1

[thirdparty/qemu.git] / linux-headers / asm-x86 / kvm.h

diff --git a/linux-headers/asm-x86/kvm.h b/linux-headers/asm-x86/kvm.h
index 5a776a08f78cb3b5c9e75e8b018abab051d08262..2da3316bb55959dad6b400e70b06628c4de0201b 100644 (file)
--- a/linux-headers/asm-x86/kvm.h
+++ b/linux-headers/asm-x86/kvm.h
@@ -373,9 +373,23 @@ struct kvm_debugregs {
        __u64 reserved[9];
 };
 
-/* for KVM_CAP_XSAVE */
+/* for KVM_CAP_XSAVE and KVM_CAP_XSAVE2 */
 struct kvm_xsave {
+       /*
+        * KVM_GET_XSAVE2 and KVM_SET_XSAVE write and read as many bytes
+        * as are returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2)
+        * respectively, when invoked on the vm file descriptor.
+        *
+        * The size value returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2)
+        * will always be at least 4096. Currently, it is only greater
+        * than 4096 if a dynamic feature has been enabled with
+        * ``arch_prctl()``, but this may change in the future.
+        *
+        * The offsets of the state save areas in struct kvm_xsave follow
+        * the contents of CPUID leaf 0xD on the host.
+        */
        __u32 region[1024];
+       __u32 extra[0];
 };
 
 #define KVM_MAX_XCRS   16