X-Git-Url: http://git.samba.org/samba.git/?p=sfrench%2Fcifs-2.6.git;a=blobdiff_plain;f=arch%2Fx86%2FKconfig;h=aafae3b140de40269abd0d9e02791853dc5cd1e6;hp=3e0f80a764a78b7a50a27d387bae023728805b57;hb=82782ca77d1bfb32b0334cce40a25b91bd8ec016;hpb=6799687a53a28536fd027ccb644833f66a778925

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3e0f80a764a7..aafae3b140de 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -279,14 +279,9 @@ config SPARSE_IRQ
 
 	  If you don't know what to do here, say N.
 
-config NUMA_MIGRATE_IRQ_DESC
-	bool "Move irq desc when changing irq smp_affinity"
+config NUMA_IRQ_DESC
+	def_bool y
 	depends on SPARSE_IRQ && NUMA
-	default n
-	---help---
-	  This enables moving irq_desc to cpu/node that irq will use handled.
-
-	  If you don't know what to do here, say N.
 
 config X86_MPPARSE
 	bool "Enable MPS table" if ACPI
@@ -358,7 +353,8 @@ config X86_UV
 	bool "SGI Ultraviolet"
 	depends on X86_64
 	depends on X86_EXTENDED_PLATFORM
-	select X86_X2APIC
+	depends on NUMA
+	depends on X86_X2APIC
 	---help---
 	  This option is needed in order to support SGI Ultraviolet systems.
 	  If you don't have one of these, you should say N here.
@@ -501,6 +497,19 @@ config PARAVIRT
 	  over full virtualization.  However, when run without a hypervisor
 	  the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_SPINLOCKS
+	bool "Paravirtualization layer for spinlocks"
+	depends on PARAVIRT && SMP && EXPERIMENTAL
+	---help---
+	  Paravirtualized spinlocks allow a pvops backend to replace the
+	  spinlock implementation with something virtualization-friendly
+	  (for example, block the virtual CPU rather than spinning).
+
+	  Unfortunately the downside is an up to 5% performance hit on
+	  native kernels, with various workloads.
+
+	  If you are unsure how to answer this question, answer N.
+
 config PARAVIRT_CLOCK
 	bool
 	default n
@@ -668,6 +677,7 @@ config MAXSMP
 
 config NR_CPUS
 	int "Maximum number of CPUs" if SMP && !MAXSMP
+	range 2 8 if SMP && X86_32 && !X86_BIGSMP
 	range 2 512 if SMP && !MAXSMP
 	default "1" if !SMP
 	default "4096" if MAXSMP