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authorAnton Blanchard <anton@samba.org>2011-12-12 20:16:36 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-12-19 14:41:22 +1100
commitb206590c04a5ffde7d4348964d3b09b574555a66 (patch)
tree520936d67eab4d6a4c9c386ffe572737b1598f91 /arch/powerpc/include
parent9f5072d4f63f28d30d343573830ac6c85fc0deff (diff)
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.h7
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 db645ec842b..412ba493cb9 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