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| author | alc <alc@FreeBSD.org> | 2007-12-27 16:45:39 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2007-12-27 16:45:39 +0000 |
| commit | 37cdbd87f5bb1a270014c737300881b26dbe2c0c (patch) | |
| tree | 55ca53f4bcd6d131ca9394e3be1a58050a881ae4 /sys/amd64/include/vmparam.h | |
| parent | 430e46303c3bc521da09dfc267d0a5fd64c1d689 (diff) | |
| download | FreeBSD-src-37cdbd87f5bb1a270014c737300881b26dbe2c0c.zip FreeBSD-src-37cdbd87f5bb1a270014c737300881b26dbe2c0c.tar.gz | |
Add configuration knobs for the superpage reservation system. Initially,
the reservation will only be enabled on amd64.
Diffstat (limited to 'sys/amd64/include/vmparam.h')
| -rw-r--r-- | sys/amd64/include/vmparam.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/amd64/include/vmparam.h b/sys/amd64/include/vmparam.h index 50962e5..712b54b 100644 --- a/sys/amd64/include/vmparam.h +++ b/sys/amd64/include/vmparam.h @@ -132,6 +132,20 @@ #define VM_NFREEORDER 13 /* + * Enable superpage reservations: 1 level. + */ +#ifndef VM_NRESERVLEVEL +#define VM_NRESERVLEVEL 1 +#endif + +/* + * Level 0 reservations consist of 512 pages. + */ +#ifndef VM_LEVEL_0_ORDER +#define VM_LEVEL_0_ORDER 9 +#endif + +/* * Virtual addresses of things. Derived from the page directory and * page table indexes from pmap.h for precision. * Because of the page that is both a PD and PT, it looks a little |
