[PATCH V2] powerpc: Fix comments in fsl_booke_mmu code that mention BATS
beckyb at kernel.crashing.org
Thu Jul 1 06:23:31 EST 2010
There are no BATS on BookE - we have the TLBCAM instead. Also correct
the page size information to included extended sizes. We don't actually allow
a 4G page size to be used, so comment on that as well.
Signed-off-by: Becky Bruce <beckyb at kernel.crashing.org>
Even lamer, I forgot that we don't actually allow use of a 4G page.
Update the comment to reflect this.
arch/powerpc/mm/fsl_booke_mmu.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index cdc7526..4b66a1e 100644
@@ -104,9 +104,10 @@ unsigned long p_mapped_by_tlbcam(phys_addr_t pa)
- * Set up one of the I/D BAT (block address translation) register pairs.
- * The parameters are not checked; in particular size must be a power
- * of 4 between 4k and 256M.
+ * Set up a variable-size TLB entry (tlbcam). The parameters are not checked;
+ * in particular size must be a power of 4 between 4k and 256M (or 1G, for cpus
+ * that support extended page sizes). Note that while some cpus support a
+ * page size of 4G, we don't allow its use here.
static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
unsigned long size, unsigned long flags, unsigned int pid)
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