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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 /include/asm-x86/xen/page.h
parentd451bb7aa852627bdf7be7937dc3d9d9f261b235 (diff)
downloadconfigs-8006ec3e911f93d702e1d4a4e387e244ab434924.tar.gz
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 'include/asm-x86/xen/page.h')
-rw-r--r--include/asm-x86/xen/page.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-x86/xen/page.h b/include/asm-x86/xen/page.h
index 293344f8102..377c04591c1 100644
--- a/include/asm-x86/xen/page.h
+++ b/include/asm-x86/xen/page.h
@@ -26,6 +26,11 @@ typedef struct xpaddr {
#define FOREIGN_FRAME_BIT (1UL<<31)
#define FOREIGN_FRAME(m) ((m) | FOREIGN_FRAME_BIT)
+/* Maximum amount of memory we can handle in a domain in pages */
+#define MAX_DOMAIN_PAGES \
+ ((unsigned long)((u64)CONFIG_XEN_MAX_DOMAIN_MEMORY * 1024 * 1024 * 1024 / PAGE_SIZE))
+
+
extern unsigned long get_phys_to_machine(unsigned long pfn);
extern void set_phys_to_machine(unsigned long pfn, unsigned long mfn);