diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1042d69b267d..bce241fe1d2d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -235,6 +235,20 @@ config SMP If you don't know what to do here, say N. +config X86_X2APIC + bool "Support x2apic" + depends on X86_LOCAL_APIC && X86_64 + ---help--- + This enables x2apic support on CPUs that have this feature. + + This allows 32-bit apic IDs (so it can support very large systems), + and accesses the local apic via MSRs not via mmio. + + ( On certain CPU models you may need to enable INTR_REMAP too, + to get functional x2apic mode. ) + + If you don't know what to do here, say N. + config SPARSE_IRQ bool "Support sparse irq numbering" depends on PCI_MSI || HT_IRQ @@ -1828,6 +1842,7 @@ config DMAR_FLOPPY_WA config INTR_REMAP bool "Support for Interrupt Remapping (EXPERIMENTAL)" depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL + select X86_X2APIC ---help--- Supports Interrupt remapping for IO-APIC and MSI devices. To use x2apic mode in the CPU's which support x2APIC enhancements or |