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authorJeremy Fitzhardinge <jeremy@goop.org>2008-05-26 23:31:19 +0100
committerThomas Gleixner <tglx@linutronix.de>2008-05-27 10:11:37 +0200
commit8006ec3e911f93d702e1d4a4e387e244ab434924 (patch)
tree87c4a8648ff2f559ce039bf606fa40e033c48b3c /arch/x86/xen/Kconfig
parentd451bb7aa852627bdf7be7937dc3d9d9f261b235 (diff)
xen: add configurable max domain size
Add a config option to set the max size of a Xen domain. This is used to scale the size of the physical-to-machine array; it ends up using around 1 page/GByte, so there's no reason to be very restrictive. For a 32-bit guest, the default value of 8GB is probably sufficient; there's not much point in giving a 32-bit machine much more memory than that. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/xen/Kconfig')
-rw-r--r--arch/x86/xen/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 525b108411b..d0f1c7c5dc3 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -11,3 +11,13 @@ config XEN
This is the Linux Xen port. Enabling this will allow the
kernel to boot in a paravirtualized environment under the
Xen hypervisor.
+
+config XEN_MAX_DOMAIN_MEMORY
+ int "Maximum allowed size of a domain in gigabytes"
+ default 8
+ depends on XEN
+ help
+ The pseudo-physical to machine address array is sized
+ according to the maximum possible memory size of a Xen
+ domain. This array uses 1 page per gigabyte, so there's no
+ need to be too stingy here. \ No newline at end of file