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| author |   Peter Chubb <peterc@gelato.unsw.edu.au> | 2005-08-16 19:54:00 -0700 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2005-08-24 15:35:41 -0700 |
| commit | 0a41e2501160587eb8f66cef3bdf1c6f2cb86997 (patch) | |
| tree | 9f5b0288c3101344acd22f7e901fe909a8f98df6 /include/asm-ia64/mmu_context.h | |
| parent | Linux v2.6.13-rc7 (diff) | |
| download | linux-dev-0a41e2501160587eb8f66cef3bdf1c6f2cb86997.tar.xz linux-dev-0a41e2501160587eb8f66cef3bdf1c6f2cb86997.zip | |
[IA64] Rationalise Region Definitions
Currently, region numbers are defined in several files, with several
names. For example, we have REGION_KERNEL in asm/page.h and
RGN_KERNEL in pgtable.h
We also have address definitions that should depend on the
RGN_XXX macros, but are currently just long constants.
The following patch reorganises all the definitions so that they have
the same form (RGN_XXX), are in one place, and that addresses that
depend on RGN_XXX are derived from them.
(This is a necessary but not sufficient patch to allow UML-like
operation on IA64).
Thanks to David Mosberger for catching the change I missed in mmu_context.h.
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/mmu_context.h')
| -rw-r--r-- | include/asm-ia64/mmu_context.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/asm-ia64/mmu_context.h b/include/asm-ia64/mmu_context.h index e3e5fededb04..ab60a6a26911 100644 --- a/include/asm-ia64/mmu_context.h +++ b/include/asm-ia64/mmu_context.h @@ -19,6 +19,7 @@ #define ia64_rid(ctx,addr) (((ctx) << 3) | (addr >> 61)) +# include <asm/page.h> # ifndef __ASSEMBLY__ #include <linux/compiler.h> @@ -110,7 +111,7 @@ reload_context (mm_context_t context) unsigned long rid_incr = 0; unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; - old_rr4 = ia64_get_rr(0x8000000000000000UL); + old_rr4 = ia64_get_rr(RGN_BASE(RGN_HPAGE)); rid = context << 3; /* make space for encoding the region number */ rid_incr = 1 << 8; @@ -122,6 +123,10 @@ reload_context (mm_context_t context) rr4 = rr0 + 4*rid_incr; #ifdef CONFIG_HUGETLB_PAGE rr4 = (rr4 & (~(0xfcUL))) | (old_rr4 & 0xfc); + +# if RGN_HPAGE != 4 +# error "reload_context assumes RGN_HPAGE is 4" +# endif #endif ia64_set_rr(0x0000000000000000UL, rr0); |