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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-05-26 23:31:19 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-27 10:11:37 +0200 |
| commit | 8006ec3e911f93d702e1d4a4e387e244ab434924 (patch) | |
| tree | 87c4a8648ff2f559ce039bf606fa40e033c48b3c /arch/x86/xen/Kconfig | |
| parent | d451bb7aa852627bdf7be7937dc3d9d9f261b235 (diff) | |
| download | blackbird-op-linux-8006ec3e911f93d702e1d4a4e387e244ab434924.tar.gz blackbird-op-linux-8006ec3e911f93d702e1d4a4e387e244ab434924.zip | |
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/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig index 525b108411bd..d0f1c7c5dc3d 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.
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