From b206590c04a5ffde7d4348964d3b09b574555a66 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 12 Dec 2011 20:16:36 +0000 Subject: 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 Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/mmu-hash64.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'arch/powerpc/include/asm/mmu-hash64.h') 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 -- cgit v1.2.3-70-g09d2