x86, cpu: Use AMD errata checking framework for erratum 383

Use the AMD errata checking framework instead of open-coding the test.

Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
LKML-Reference: <1280336972-865982-3-git-send-email-hans.rosenfeld@amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index ce438e0..03b534b 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -383,8 +383,7 @@
 	int err;
 	u64 val;
 
-	/* Only Fam10h is affected */
-	if (boot_cpu_data.x86 != 0x10)
+	if (!cpu_has_amd_erratum(amd_erratum_383))
 		return;
 
 	/* Use _safe variants to not break nested virtualization */