X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2FKconfig;h=03681b915a5653a2ede1d1b1f833eac916e3929c;hb=5020cac828f9f6c98a685598599a1dc798712005;hp=929012e60815a5311ec087a28f2362d44a40f8fc;hpb=a91482bdcc2e0f6035702e46f1b99043a0893346;p=linux-2.6.git

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 929012e60..03681b915 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -1,15 +1,22 @@
 #
 # PCI configuration
 #
-config PCI_MSI
-	bool "Message Signaled Interrupts (MSI and MSI-X)"
+config PCI_USE_VECTOR
+	bool "Vector-based interrupt indexing (MSI)"
 	depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64
 	default n
 	help
-	   This allows device drivers to enable MSI (Message Signaled
-	   Interrupts).  Message Signaled Interrupts enable a device to
-	   generate an interrupt using an inbound Memory Write on its
-	   PCI bus instead of asserting a device IRQ pin.
+	   This replaces the current existing IRQ-based index interrupt scheme
+	   with the vector-base index scheme. The advantages of vector base
+	   over IRQ base are listed below:
+	   1) Support MSI implementation.
+	   2) Support future IOxAPIC hotplug
+
+	   Note that this allows the device drivers to enable MSI, Message
+	   Signaled Interrupt, on all MSI capable device functions detected.
+	   Message Signal Interrupt enables an MSI-capable hardware device to
+	   send an inbound Memory Write on its PCI bus instead of asserting
+	   IRQ signal on device IRQ pin.
 
 	   If you don't know what to do here, say N.