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Provide settings for superpage reservation system on ARM.

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This allows for enabling and configuring superpages reservation mechanism in
order to allocate and populate 256 4KB base pages (for the purpose of
promotion to a 1MB superpage).

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation, Semihalf
This commit is contained in:
Rafal Jaworowski 2013-08-26 16:23:54 +00:00
parent 026bf0a293
commit 995c2b63f7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254915
1 changed files with 9 additions and 2 deletions
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11
sys/arm/include/vmparam.h
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@ -109,10 +109,17 @@
#define VM_NFREEORDER 9
/*
* Disable superpage reservations.
* Enable superpage reservations: 1 level.
*/
#ifndef VM_NRESERVLEVEL
#define VM_NRESERVLEVEL 0
#define VM_NRESERVLEVEL 1
#endif
/*
* Level 0 reservations consist of 256 pages.
*/
#ifndef VM_LEVEL_0_ORDER
#define VM_LEVEL_0_ORDER 8
#endif
#define UPT_MAX_ADDRESS VADDR(UPTPTDI + 3, 0)