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| author |   David Gibson <david@gibson.dropbear.id.au> | 2005-06-21 17:15:31 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-21 18:46:26 -0700 |
| commit | 20cee16ced631f70a62c97bdebae08a1c9470448 (patch) | |
| tree | f980db4e2b19dfcd4413e6cba4f667eb1d8c79cd /include/asm-ppc64/imalloc.h | |
| parent | [PATCH] ppc32: Kill embedded system.map, use kallsyms (diff) | |
| download | linux-dev-20cee16ced631f70a62c97bdebae08a1c9470448.tar.xz linux-dev-20cee16ced631f70a62c97bdebae08a1c9470448.zip | |
[PATCH] ppc64: Abolish ioremap_mm
Currently ppc64 has two mm_structs for the kernel, init_mm and also
ioremap_mm. The latter really isn't necessary: this patch abolishes it,
instead restricting vmallocs to the lower 1TB of the init_mm's range and
placing io mappings in the upper 1TB. This simplifies the code in a number
of places and eliminates an unecessary set of pagetables. It also tweaks
the unmap/free path a little, allowing us to remove the unmap_im_area() set
of page table walkers, replacing them with unmap_vm_area().
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc64/imalloc.h')
| -rw-r--r-- | include/asm-ppc64/imalloc.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/asm-ppc64/imalloc.h b/include/asm-ppc64/imalloc.h index 3a45e918bf16..e46ff68a6e41 100644 --- a/include/asm-ppc64/imalloc.h +++ b/include/asm-ppc64/imalloc.h @@ -4,9 +4,9 @@ /* * Define the address range of the imalloc VM area. */ -#define PHBS_IO_BASE IOREGIONBASE -#define IMALLOC_BASE (IOREGIONBASE + 0x80000000ul) /* Reserve 2 gigs for PHBs */ -#define IMALLOC_END (IOREGIONBASE + EADDR_MASK) +#define PHBS_IO_BASE VMALLOC_END +#define IMALLOC_BASE (PHBS_IO_BASE + 0x80000000ul) /* Reserve 2 gigs for PHBs */ +#define IMALLOC_END (VMALLOC_START + EADDR_MASK) /* imalloc region types */ @@ -18,7 +18,9 @@ extern struct vm_struct * im_get_free_area(unsigned long size); extern struct vm_struct * im_get_area(unsigned long v_addr, unsigned long size, - int region_type); -unsigned long im_free(void *addr); + int region_type); +extern void im_free(void *addr); + +extern unsigned long ioremap_bot; #endif /* _PPC64_IMALLOC_H */ |