diff --git a/target/linux/x86/64/config-4.14 b/target/linux/x86/64/config-4.14
index f8c109442a..8d3cd4e812 100644
--- a/target/linux/x86/64/config-4.14
+++ b/target/linux/x86/64/config-4.14
@@ -251,7 +251,7 @@ CONFIG_MODULES_USE_ELF_RELA=y
 # CONFIG_MPSC is not set
 CONFIG_MUTEX_SPIN_ON_OWNER=y
 CONFIG_NET_FLOW_LIMIT=y
-CONFIG_NR_CPUS=8
+CONFIG_NR_CPUS=512
 # CONFIG_NUMA is not set
 CONFIG_OUTPUT_FORMAT="elf64-x86-64"
 CONFIG_PADATA=y
diff --git a/target/linux/x86/64/config-4.19 b/target/linux/x86/64/config-4.19
index 70e7e2f3a0..d838a54250 100644
--- a/target/linux/x86/64/config-4.19
+++ b/target/linux/x86/64/config-4.19
@@ -265,8 +265,8 @@ CONFIG_ND_CLAIM=y
 CONFIG_NEED_DMA_MAP_STATE=y
 CONFIG_NET_FAILOVER=y
 CONFIG_NET_FLOW_LIMIT=y
-CONFIG_NR_CPUS=8
-CONFIG_NR_CPUS_DEFAULT=64
+CONFIG_NR_CPUS=512
+CONFIG_NR_CPUS_DEFAULT=512
 CONFIG_NR_CPUS_RANGE_BEGIN=2
 CONFIG_NR_CPUS_RANGE_END=512
 # CONFIG_NUMA is not set
diff --git a/target/linux/x86/config-4.14 b/target/linux/x86/config-4.14
index 0b1acdc8d9..4237357e7d 100644
--- a/target/linux/x86/config-4.14
+++ b/target/linux/x86/config-4.14
@@ -344,7 +344,7 @@ CONFIG_NEED_SG_DMA_LENGTH=y
 CONFIG_NLS=y
 # CONFIG_NOHIGHMEM is not set
 CONFIG_NO_BOOTMEM=y
-CONFIG_NR_CPUS=1
+CONFIG_NR_CPUS=8
 # CONFIG_NSC_GPIO is not set
 CONFIG_NVRAM=y
 # CONFIG_OF is not set