diff options
Diffstat (limited to 'arch/x86/kernel/topology.c')
| -rw-r--r-- | arch/x86/kernel/topology.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c index 12cbe2b88c0f..738bf42b0218 100644 --- a/arch/x86/kernel/topology.c +++ b/arch/x86/kernel/topology.c | |||
| @@ -111,8 +111,10 @@ int arch_register_cpu(int num) | |||
| 111 | /* | 111 | /* |
| 112 | * Currently CPU0 is only hotpluggable on Intel platforms. Other | 112 | * Currently CPU0 is only hotpluggable on Intel platforms. Other |
| 113 | * vendors can add hotplug support later. | 113 | * vendors can add hotplug support later. |
| 114 | * Xen PV guests don't support CPU0 hotplug at all. | ||
| 114 | */ | 115 | */ |
| 115 | if (c->x86_vendor != X86_VENDOR_INTEL) | 116 | if (c->x86_vendor != X86_VENDOR_INTEL || |
| 117 | boot_cpu_has(X86_FEATURE_XENPV)) | ||
| 116 | cpu0_hotpluggable = 0; | 118 | cpu0_hotpluggable = 0; |
| 117 | 119 | ||
| 118 | /* | 120 | /* |