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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-05-27 02:31:19 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-27 12:11:37 +0400 |
| commit | 8006ec3e911f93d702e1d4a4e387e244ab434924 (patch) | |
| tree | 87c4a8648ff2f559ce039bf606fa40e033c48b3c /include/asm-x86/xen | |
| parent | d451bb7aa852627bdf7be7937dc3d9d9f261b235 (diff) | |
| download | linux-8006ec3e911f93d702e1d4a4e387e244ab434924.tar.xz | |
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')
| -rw-r--r-- | include/asm-x86/xen/page.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-x86/xen/page.h b/include/asm-x86/xen/page.h index 293344f8102e..377c04591c15 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); |