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powerpc: Add memory management headers for new 64-bit BookE

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This adds the PTE and pgtable format definitions, along with changes
to the kernel memory map and other definitions related to implementing
support for 64-bit Book3E. This also shields some asm-offset bits that
are currently only relevant on 32-bit

We also move the definition of the "linux" page size constants to
the common mmu.h file and add a few sizes that are relevant to
embedded processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2009-07-28 11:59:34 +10:00
parent 0257c99cdf
commit 57e2a99f74
10 changed files with 205 additions and 40 deletions
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4
arch/powerpc/include/asm/page.h
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@ -139,7 +139,11 @@ extern phys_addr_t kernstart_addr;
* Don't compare things with KERNELBASE or PAGE_OFFSET to test for
* "kernelness", use is_kernel_addr() - it should do what you want.
*/
#ifdef CONFIG_PPC_BOOK3E_64
#define is_kernel_addr(x) ((x) >= 0x8000000000000000ul)
#else
#define is_kernel_addr(x) ((x) >= PAGE_OFFSET)
#endif
#ifndef __ASSEMBLY__