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Subject[PATCH 4.1 76/78] x86/xen: make CONFIG_XEN depend on CONFIG_X86_LOCAL_APIC
4.1-stable review patch.  If anyone has any objections, please let me know.


From: David Vrabel <>

commit 87ffd2b9bb74061c120f450e4d0f3409bb603ae0 upstream.

Since commit feb44f1f7a4ac299d1ab1c3606860e70b9b89d69 (x86/xen:
Provide a "Xen PV" APIC driver to support >255 VCPUs) Xen guests need
a full APIC driver and thus should depend on X86_LOCAL_APIC.

This fixes an i386 build failure with !SMP && !CONFIG_X86_UP_APIC by
disabling Xen support in this configuration.

Users needing Xen support in a non-SMP i386 kernel will need to enable

Signed-off-by: David Vrabel <>
Signed-off-by: Greg Kroah-Hartman <>

arch/x86/xen/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -8,7 +8,7 @@ config XEN
depends on X86_64 || (X86_32 && X86_PAE)
- depends on X86_TSC
+ depends on X86_LOCAL_APIC && X86_TSC
This is the Linux Xen port. Enabling this will allow the
kernel to boot in a paravirtualized environment under the
@@ -17,7 +17,7 @@ config XEN
config XEN_DOM0
def_bool y
depends on XEN && PCI_XEN && SWIOTLB_XEN
- depends on X86_LOCAL_APIC && X86_IO_APIC && ACPI && PCI
+ depends on X86_IO_APIC && ACPI && PCI

config XEN_PVHVM
def_bool y

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