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| author | Jeremy Fitzhardinge | 2008-06-25 06:19:03 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2008-07-08 13:10:28 +0200 |
| commit | 4583ed514ea9ac844a6eb02d33120beaedf6837f (patch) | |
| tree | 9df2d1e1a5d1726303f761954593defc483e2d20 /include/asm-x86/fixmap_64.h | |
| parent | x86, 64-bit: use p??_populate() to attach pages to pagetable (diff) | |
| download | kernel-qcow2-linux-4583ed514ea9ac844a6eb02d33120beaedf6837f.tar.gz kernel-qcow2-linux-4583ed514ea9ac844a6eb02d33120beaedf6837f.tar.xz kernel-qcow2-linux-4583ed514ea9ac844a6eb02d33120beaedf6837f.zip | |
x86, 64-bit: unify early_ioremap
The 32-bit early_ioremap will work equally well for 64-bit, so just use it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/fixmap_64.h')
| -rw-r--r-- | include/asm-x86/fixmap_64.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-x86/fixmap_64.h b/include/asm-x86/fixmap_64.h index 626098823a0c..c7dcc365f470 100644 --- a/include/asm-x86/fixmap_64.h +++ b/include/asm-x86/fixmap_64.h @@ -49,6 +49,19 @@ enum fixed_addresses { #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT FIX_OHCI1394_BASE, #endif + __end_of_permanent_fixed_addresses, + /* + * 256 temporary boot-time mappings, used by early_ioremap(), + * before ioremap() is functional. + * + * We round it up to the next 512 pages boundary so that we + * can have a single pgd entry and a single pte table: + */ +#define NR_FIX_BTMAPS 64 +#define FIX_BTMAPS_NESTING 4 + FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 512 - + (__end_of_permanent_fixed_addresses & 511), + FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1, __end_of_fixed_addresses }; |