FAILED: patch "[PATCH] KVM: x86: Mask off reserved bits in CPUID.8000001AH" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

079f6889818d ("KVM: x86: Mask off reserved bits in CPUID.8000001AH") 382409b4c43e ("kvm: x86: Include CPUID leaf 0x8000001e in kvm's supported CPUID")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 079f6889818dd07903fb36c252532ab47ebb6d48 Mon Sep 17 00:00:00 2001
From: Jim Mattson <[email protected]>
Date: Thu, 29 Sep 2022 15:52:01 -0700
Subject: [PATCH] KVM: x86: Mask off reserved bits in CPUID.8000001AH

KVM_GET_SUPPORTED_CPUID should only enumerate features that KVM actually supports. In the case of CPUID.8000001AH, only three bits are currently defined. The 125 reserved bits should be masked off.

Message-Id: <[email protected]>

index 489c028859e1..a0292ba650df 100644
@@ -1189,6 +1189,9 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 		entry->ecx = entry->edx = 0;
 		break;
 	case 0x8000001a:
+		entry->eax &= GENMASK(2, 0);
+		entry->ebx = entry->ecx = entry->edx = 0;
+		break;
 	case 0x8000001e:
 		break;
 	case 0x8000001F: