[Xen-devel] Re: [RFC, PATCH 2/24] i386 Vmi config

[Sam Vilain <sam@xxxxxxxxxx>]

Zachary Amsden wrote:

>===================================================================
>--- linux-2.6.16-rc5.orig/arch/i386/Kconfig    2006-03-06 11:25:08.000000000 
>-0800
>+++ linux-2.6.16-rc5/arch/i386/Kconfig 2006-03-06 16:41:25.000000000 -0800
>@@ -133,8 +133,33 @@ config X86_ES7000
>         Only choose this option if you have such a system, otherwise you
>         should say N here.
> 
>+config X86_VMI
>+      bool "VMI architecture support"
>+      help
>+         This option builds a kernel designed to run on top of a virtual
>+         machine interface layer (VMI).  Say 'N' here unless you are
>+         building a kernel to run inside a virtual machine.
>+
> endchoice
>  
>

I think we should have a top level "Virtualisation" menu for
VMI/Xen/vserver/openvz/etc.  While this option might seem to belong
here, it might be better for users to keep the configuration for the
virtualisation approaches together.

Of course I'm not core team so don't go changing your patch, this is a
point of discussion :)

> 
>+menu "VMI configurable support"
>+      depends on X86_VMI
>+
>+config VMI_REQUIRE_HYPERVISOR
>+        bool "Require hypervisor"
>+        default n
>+        help
>+          This option forces the kernel to run with a hypervisor present.
>+          The kernel will panic if booted on native hardware.
>+
>+config VMI_DEBUG
>+      bool "VMI debugging"
>+      default n
>+      help
>+        Provides extra debugging output and testing of VMI interfaces.
>+
>+endmenu
>+
> config ACPI_SRAT
>       bool
>       default y
>@@ -270,7 +295,7 @@ config X86_VISWS_APIC
> 
> config X86_MCE
>       bool "Machine Check Exception"
>-      depends on !X86_VOYAGER
>+      depends on !(X86_VOYAGER)
>       ---help---
>         Machine Check Exception support allows the processor to notify the
>         kernel if it detects a problem (e.g. overheating, component failure).
>@@ -307,6 +332,7 @@ config X86_MCE_P4THERMAL
> 
> config TOSHIBA
>       tristate "Toshiba Laptop support"
>+      depends on !X86_VMI
>       ---help---
>         This adds a driver to safely access the System Management Mode of
>         the CPU on Toshiba portables with a genuine Toshiba BIOS. It does
>@@ -322,6 +348,7 @@ config TOSHIBA
> 
> config I8K
>       tristate "Dell laptop support"
>+      depends on !X86_VMI
>       ---help---
>         This adds a driver to safely access the System Management Mode
>         of the CPU on the Dell Inspiron 8000. The System Management Mode
>@@ -569,6 +596,7 @@ config HIGHPTE
> 
> config MATH_EMULATION
>       bool "Math emulation"
>+      depends on !X86_VMI
>       ---help---
>         Linux can emulate a math coprocessor (used for floating point
>         operations) if you don't have one. 486DX and Pentium processors have
>@@ -760,7 +788,7 @@ source kernel/power/Kconfig
> source "drivers/acpi/Kconfig"
> 
> menu "APM (Advanced Power Management) BIOS Support"
>-depends on PM && !X86_VISWS
>+depends on PM && !(X86_VISWS || X86_VMI)
> 
> config APM
>       tristate "APM (Advanced Power Management) BIOS support"
>@@ -930,8 +958,9 @@ config PCI
> 
> choice
>       prompt "PCI access mode"
>-      depends on PCI && !X86_VISWS
>+      depends on PCI && !(X86_VISWS || X86_VMI)
>       default PCI_GOANY
>+
>       ---help---
>         On PCI systems, the BIOS can be used to detect the PCI devices and
>         determine their configuration. However, some old PCI motherboards
>@@ -963,12 +992,12 @@ endchoice
> 
> config PCI_BIOS
>       bool
>-      depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
>+      depends on !(X86_VISWS && X86_VMI) && PCI && (PCI_GOBIOS || PCI_GOANY)
>       default y
> 
> config PCI_DIRECT
>       bool
>-      depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
>+      depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS || X86_VMI)
>       default y
> 
> config PCI_MMCONFIG
>@@ -986,7 +1015,7 @@ config ISA_DMA_API
> 
> config ISA
>       bool "ISA support"
>-      depends on !(X86_VOYAGER || X86_VISWS)
>+      depends on !(X86_VOYAGER || X86_VISWS || X86_VMI)
>       help
>         Find out whether you have ISA slots on your motherboard.  ISA is the
>         name of a bus system, i.e. the way the CPU talks to the other stuff
>@@ -1013,7 +1042,7 @@ config EISA
> source "drivers/eisa/Kconfig"
> 
> config MCA
>-      bool "MCA support" if !(X86_VISWS || X86_VOYAGER)
>+      bool "MCA support" if !(X86_VISWS || X86_VOYAGER || X86_VMI)
>       default y if X86_VOYAGER
>       help
>         MicroChannel Architecture is found in some IBM PS/2 machines and
>Index: linux-2.6.16-rc5/arch/i386/Kconfig.cpu
>===================================================================
>--- linux-2.6.16-rc5.orig/arch/i386/Kconfig.cpu        2006-03-06 
>11:25:08.000000000 -0800
>+++ linux-2.6.16-rc5/arch/i386/Kconfig.cpu     2006-03-06 16:01:41.000000000 
>-0800
>@@ -7,6 +7,7 @@ choice
> 
> config M386
>       bool "386"
>+      depends on !X86_VMI
>       ---help---
>         This is the processor type of your CPU. This information is used for
>         optimizing purposes. In order to compile a kernel that can run on
>@@ -47,6 +48,7 @@ config M386
> 
> config M486
>       bool "486"
>+      depends on !X86_VMI
>       help
>         Select this for a 486 series processor, either Intel or one of the
>         compatible processors from AMD, Cyrix, IBM, or Intel.  Includes DX,
>@@ -55,6 +57,7 @@ config M486
> 
> config M586
>       bool "586/K5/5x86/6x86/6x86MX"
>+      depends on !X86_VMI
>       help
>         Select this for an 586 or 686 series processor such as the AMD K5,
>         the Cyrix 5x86, 6x86 and 6x86MX.  This choice does not
>@@ -62,12 +65,14 @@ config M586
> 
> config M586TSC
>       bool "Pentium-Classic"
>+      depends on !X86_VMI
>       help
>         Select this for a Pentium Classic processor with the RDTSC (Read
>         Time Stamp Counter) instruction for benchmarking.
> 
> config M586MMX
>       bool "Pentium-MMX"
>+      depends on !X86_VMI
>       help
>         Select this for a Pentium with the MMX graphics/multimedia
>         extended instructions.
>-
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