diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index acdb8dcaeb52..9749820f68f7 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -189,7 +189,7 @@ static const char *__init pci_mmcfg_intel_945(void)
 
 static const char *__init pci_mmcfg_amd_fam10h(void)
 {
-	u32 low, high, address;
+	u32 address;
 	u64 base, msr;
 	int i;
 	unsigned segnbits = 0, busnbits, end_bus;
@@ -198,13 +198,9 @@ static const char *__init pci_mmcfg_amd_fam10h(void)
 		return NULL;
 
 	address = MSR_FAM10H_MMIO_CONF_BASE;
-	if (rdmsr_safe(address, &low, &high))
+	if (rdmsrq_safe(address, &msr))
 		return NULL;
 
-	msr = high;
-	msr <<= 32;
-	msr |= low;
-
 	/* ECAM is not enabled */
 	if (!(msr & FAM10H_MMIO_CONF_ENABLE))
 		return NULL;