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Reclaim UPAGES_HOLE (8k) that was chopped out of process address space.

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The UPAGES have not been there since Jan '96, but the hole was preserved
for BSD/OS binary compatability.  This has been fixed other ways (%ebx
now has a pointer to PS_STRINGS), and the stack is nowhere near where
it used to be so this hack isn't required anymore.
This commit is contained in:
Peter Wemm 1999-12-11 10:54:06 +00:00
parent 99b30c79b0
commit 7ba4a77549
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=54425
3 changed files with 2 additions and 4 deletions
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2
sys/amd64/include/pmap.h
View File

@ -115,7 +115,7 @@
#endif /* SMP */
#define PTDPTDI (KPTDI-1) /* ptd entry that points to ptd! */
#define UMAXPTDI (PTDPTDI-1) /* ptd entry for user space end */
#define UMAXPTEOFF (NPTEPG-UPAGES_HOLE) /* pte entry for user space end */
#define UMAXPTEOFF (NPTEPG) /* pte entry for user space end */
/*
* XXX doesn't really belong here I guess...

2
sys/i386/include/param.h
View File

@ -99,8 +99,6 @@
#define IOPAGES 2 /* pages of i/o permission bitmap */
#define UPAGES 2 /* pages of u-area */
#define UPAGES_HOLE 2 /* pages of "hole" at top of user space where */
/* the upages used to be. DO NOT CHANGE! */
/*
* Constants related to network buffer management.

2
sys/i386/include/pmap.h
View File

@ -115,7 +115,7 @@
#endif /* SMP */
#define PTDPTDI (KPTDI-1) /* ptd entry that points to ptd! */
#define UMAXPTDI (PTDPTDI-1) /* ptd entry for user space end */
#define UMAXPTEOFF (NPTEPG-UPAGES_HOLE) /* pte entry for user space end */
#define UMAXPTEOFF (NPTEPG) /* pte entry for user space end */
/*
* XXX doesn't really belong here I guess...