[Xen-ia64-devel] [PATCH 28/30] ia64/pv_ops: update Kconfig for paravirtualized guest and xen.

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

introduce CONFIG_PARAVIRT_GUEST, CONFIG_PARAVIRT for
paravirtualized guest.
introduce CONFIG_XEN, CONFIG_IA64_XEN_GUEST for xen.

Signed-off-by: Alex Williamson <alex.williamson@xxxxxx>
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
---
 arch/ia64/Kconfig     |   32 ++++++++++++++++++++++++++++++++
 arch/ia64/xen/Kconfig |   26 ++++++++++++++++++++++++++
 2 files changed, 58 insertions(+), 0 deletions(-)
 create mode 100644 arch/ia64/xen/Kconfig

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 48e496f..34639f1 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -116,6 +116,33 @@ config AUDIT_ARCH
        bool
        default y
 
+menuconfig PARAVIRT_GUEST
+       bool "Paravirtualized guest support"
+       help
+         Say Y here to get to see options related to running Linux under
+         various hypervisors.  This option alone does not add any kernel code.
+
+         If you say N, all options in this submenu will be skipped and 
disabled.
+
+if PARAVIRT_GUEST
+
+config PARAVIRT
+       bool "Enable paravirtualization code"
+       depends on PARAVIRT_GUEST
+       default y
+       bool
+       default y
+       help
+         This changes the kernel so it can modify itself when it is run
+         under a hypervisor, potentially improving performance significantly
+         over full virtualization.  However, when run without a hypervisor
+         the kernel is theoretically slower and slightly larger.
+
+
+source "arch/ia64/xen/Kconfig"
+
+endif
+
 choice
        prompt "System type"
        default IA64_GENERIC
@@ -137,6 +164,7 @@ config IA64_GENERIC
          SGI-SN2               For SGI Altix systems
          SGI-UV                For SGI UV systems
          Ski-simulator         For the HP simulator 
<http://www.hpl.hp.com/research/linux/ski/>
+         Xen-domU              For xen domU system
 
          If you don't know what to do, choose "generic".
 
@@ -187,6 +215,10 @@ config IA64_HP_SIM
        bool "Ski-simulator"
        select SWIOTLB
 
+config IA64_XEN_GUEST
+       bool "Xen guest"
+       depends on XEN
+
 endchoice
 
 choice
diff --git a/arch/ia64/xen/Kconfig b/arch/ia64/xen/Kconfig
new file mode 100644
index 0000000..f1683a2
--- /dev/null
+++ b/arch/ia64/xen/Kconfig
@@ -0,0 +1,26 @@
+#
+# This Kconfig describes xen/ia64 options
+#
+
+config XEN
+       bool "Xen hypervisor support"
+       default y
+       depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
+       select XEN_XENCOMM
+       select NO_IDLE_HZ
+
+       # those are required to save/restore.
+       select ARCH_SUSPEND_POSSIBLE
+       select SUSPEND
+       select PM_SLEEP
+       help
+         Enable Xen hypervisor support.  Resulting kernel runs
+         both as a guest OS on Xen and natively on hardware.
+
+config XEN_XENCOMM
+       depends on XEN
+       bool
+
+config NO_IDLE_HZ
+       depends on XEN
+       bool
-- 
1.6.0.rc0.42.g186458


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