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| author | Becky Bruce <beckyb@kernel.crashing.org> | 2010-06-30 10:23:31 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-09 11:28:26 +1000 |
| commit | d10ac3734d07bee675384d22d06883b3c57b1524 (patch) | |
| tree | 9e7530b9cddfbfe069b18f504eeccd6fdc333337 /arch/powerpc/mm/fsl_booke_mmu.c | |
| parent | 6901c6cca1271d1724fc15e9937e0820e2d2fbd5 (diff) | |
| download | talos-op-linux-d10ac3734d07bee675384d22d06883b3c57b1524.tar.gz talos-op-linux-d10ac3734d07bee675384d22d06883b3c57b1524.zip | |
powerpc/fsl-booke: Fix comments in mmu code that mention BATS
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@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/fsl_booke_mmu.c')
| -rw-r--r-- | 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 cdc7526e9c93..4b66a1ece6d8 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -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) |
