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| author | Anton Blanchard <anton@samba.org> | 2011-12-12 20:16:36 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-12-19 14:41:22 +1100 |
| commit | b206590c04a5ffde7d4348964d3b09b574555a66 (patch) | |
| tree | 520936d67eab4d6a4c9c386ffe572737b1598f91 /arch/powerpc/include | |
| parent | 9f5072d4f63f28d30d343573830ac6c85fc0deff (diff) | |
| download | linux-b206590c04a5ffde7d4348964d3b09b574555a66.tar.gz linux-b206590c04a5ffde7d4348964d3b09b574555a66.tar.bz2 linux-b206590c04a5ffde7d4348964d3b09b574555a66.zip | |
powerpc: Fix comment explaining our VSID layout
We support 16TB of user address space and half a million contexts
so update the comment to reflect this.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmu-hash64.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index db645ec842bd..412ba493cb98 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -312,10 +312,9 @@ extern void slb_set_size(u16 size); * (i.e. everything above 0xC000000000000000), except the very top * segment, which simplifies several things. * - * - We allow for 15 significant bits of ESID and 20 bits of - * context for user addresses. i.e. 8T (43 bits) of address space for - * up to 1M contexts (although the page table structure and context - * allocation will need changes to take advantage of this). + * - We allow for 16 significant bits of ESID and 19 bits of + * context for user addresses. i.e. 16T (44 bits) of address space for + * up to half a million contexts. * * - The scramble function gives robust scattering in the hash * table (at least based on some initial results). The previous |