linux-toradex.git/arch/sh/include/asm/pgtable_32.h, branch v2.6.36

sh: Provide a dummy _PAGE_WIRED flag for non-X2TLB parts.

2010-01-19T05:23:39+00:00

This provides a dummy value for legacy parts which permits the entry
wiring to be open-coded. The compiler takes care of optimizing the entry
wiring away in these cases.

Signed-off-by: Paul Mundt

sh: New extended page flag to wire/unwire TLB entries

2010-01-16T14:28:57+00:00

Provide a new extended page flag, _PAGE_WIRED and an SH4 implementation
for wiring TLB entries and use it in the fixmap code path so that we can
wire the fixmap TLB entry.

Signed-off-by: Matt Fleming

sh: Couple kernel and user write page perm bits for CONFIG_X2TLB

2009-12-14T02:24:35+00:00

pte_write() should check whether the permissions include either the user
or kernel write permission bits. Likewise, pte_wrprotect() needs to
remove both the kernel and user write bits.

Without this patch handle_tlbmiss() doesn't handle faulting in pages
from the P3 area (our vmalloc space) because of a write. Mappings of the
P3 space have the _PAGE_EXT_KERN_WRITE bit but not _PAGE_EXT_USER_WRITE.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Prepare for dynamic PMB support

2009-10-10T12:51:12+00:00

To allow the MMU to be switched between 29bit and 32bit mode at runtime
some constants need to swapped for functions that return a runtime
value.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Fix up and optimize the kmap_coherent() interface.

2009-09-03T08:21:10+00:00

This fixes up the kmap_coherent/kunmap_coherent() interface for recent
changes both in the page fault path and the shared cache flushers, as
well as adding in some optimizations.

One of the key things to note here is that the TLB flush itself is
deferred until the unmap, and the call in to update_mmu_cache() itself
goes away, relying on the regular page fault path to handle the lazy
dcache writeback if necessary.

Signed-off-by: Paul Mundt

sh: Better description of SH-4 PTEA register update.

2009-08-20T04:27:44+00:00

Signed-off-by: Michael Trimarchi 
Signed-off-by: Paul Mundt

sh: Provide _PAGE_SPECIAL for 32-bit.

2009-07-22T07:50:57+00:00

Allocate one of the unused PTE bits for _PAGE_SPECIAL directly. This is
prep work for fast gup and the zero page revival.

Signed-off-by: Paul Mundt

sh: migrate to arch/sh/include/

2008-07-28T23:09:44+00:00

This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac.

Most of the moving about was done with Sam's directions at:

http://marc.info/?l=linux-sh&m=121724823706062&w=2

with subsequent hacking and fixups entirely my fault.

Signed-off-by: Sam Ravnborg 
Signed-off-by: Paul Mundt