Commit b206590c authored by Anton Blanchard's avatar Anton Blanchard Committed by Benjamin Herrenschmidt

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: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 9f5072d4
...@@ -312,10 +312,9 @@ extern void slb_set_size(u16 size); ...@@ -312,10 +312,9 @@ extern void slb_set_size(u16 size);
* (i.e. everything above 0xC000000000000000), except the very top * (i.e. everything above 0xC000000000000000), except the very top
* segment, which simplifies several things. * segment, which simplifies several things.
* *
* - We allow for 15 significant bits of ESID and 20 bits of * - We allow for 16 significant bits of ESID and 19 bits of
* context for user addresses. i.e. 8T (43 bits) of address space for * context for user addresses. i.e. 16T (44 bits) of address space for
* up to 1M contexts (although the page table structure and context * up to half a million contexts.
* allocation will need changes to take advantage of this).
* *
* - The scramble function gives robust scattering in the hash * - The scramble function gives robust scattering in the hash
* table (at least based on some initial results). The previous * table (at least based on some initial results). The previous
......
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