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[PATCH] x86: fix incorrect return value for has_if_pschange_mc
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Kevin Lampis <kevin.lampis@xxxxxxxxxx>
- Date: Fri, 9 Jan 2026 11:43:30 +0000
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- Cc: jbeulich@xxxxxxxx, andrew.cooper3@xxxxxxxxxx, roger.pau@xxxxxxxxxx, Kevin Lampis <kevin.lampis@xxxxxxxxxx>
- Delivery-date: Fri, 09 Jan 2026 11:43:41 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
A return value is missing from this function leading to safe CPUs being
marked as vulnerable.
Signed-off-by: Kevin Lampis <kevin.lampis@xxxxxxxxxx>
---
xen/arch/x86/hvm/vmx/vmx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 05b59cb8e4..cf474ee5b3 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -3117,6 +3117,7 @@ static bool __init has_if_pschange_mc(void)
case 0x75: /* Lightning Mountain */
case 0x7a: /* Gemini Lake */
case 0x86: /* Jacobsville */
+ return false;
default:
printk("Unrecognised CPU model %#x - assuming vulnerable to
IF_PSCHANGE_MC\n",
--
2.51.1
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