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Don't use the whole region 5 for KVA, because the CPU may not implement all

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of the 61 bits available within the region for virtual addressing.  Since
there's no good way for us to map out the gap in the virtual address space,
limit KVA to the architectural minimum implemented address bits. This still
gives us 1 petabyte of KVA, so no worries.
This commit is contained in:
Marcel Moolenaar 2011-05-02 17:49:05 +00:00
parent 5d3c20e97c
commit 6dfe4f958f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=221334
1 changed files with 2 additions and 1 deletions
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3
sys/ia64/include/vmparam.h
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@ -182,7 +182,8 @@
#define VM_MIN_ADDRESS 0
#define VM_MAXUSER_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION)
#define VM_MIN_KERNEL_ADDRESS IA64_RR_BASE(IA64_VM_MINKERN_REGION + 1)
#define VM_MAX_KERNEL_ADDRESS (IA64_RR_BASE(IA64_VM_MINKERN_REGION + 2) - 1)
#define VM_MAX_KERNEL_ADDRESS \
(VM_MIN_KERNEL_ADDRESS + IA64_REGION_GAP_START - 1)
#define VM_MAX_ADDRESS ~0UL
#define KERNBASE VM_MAXUSER_ADDRESS