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Revert r216080 so kmem_map is capped at 3/5 of the currently rather modest

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kernel address space in order to leave space for the buffer cache, pipes,
thread stacks, etc on machines with more physical memory until we take
advantage of ASI_ATOMIC_QUAD_LDD_PHYS on CPUs providing it so we don't need
to lock the kernel TSB pages into the dTLB, basically making the entire
64-bit kernel address space available on relevant machines.

Submitted by:	alc
This commit is contained in:
Marius Strobl 2010-12-21 21:32:17 +00:00
parent 142d932b79
commit 3318c3ef45
1 changed files with 2 additions and 1 deletions
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3
sys/sparc64/include/vmparam.h
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@ -240,7 +240,8 @@
* Ceiling on amount of kmem_map kva space.
*/
#ifndef VM_KMEM_SIZE_MAX
#define VM_KMEM_SIZE_MAX (VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS)
#define VM_KMEM_SIZE_MAX ((VM_MAX_KERNEL_ADDRESS - \
VM_MIN_KERNEL_ADDRESS + 1) * 3 / 5)
#endif
/*