linux-toradex.git/arch/parisc/kernel/pacache.S, branch v3.4.2 Linux kernel for Apalis and Colibri modules [PARISC] fix crash in flush_icache_page_asm on PA1.1 2012-05-16T12:15:06+00:00 John David Anglin dave.anglin@bell.net 2012-05-16T09:14:52+00:00 207f583d7179f707f402c36a7bda5ca1fd03ad5b As pointed out by serveral people, PA1.1 only has a type 26 instruction meaning that the space register must be explicitly encoded. Not giving an explicit space means that the compiler uses the type 24 version which is PA2.0 only resulting in an illegal instruction crash. This regression was caused by commit f311847c2fcebd81912e2f0caf8a461dec28db41 Author: James Bottomley <James.Bottomley@HansenPartnership.com> Date: Wed Dec 22 10:22:11 2010 -0600 parisc: flush pages through tmpalias space Reported-by: Helge Deller <deller@gmx.de> Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: stable@vger.kernel.org #2.6.39+ Signed-off-by: James Bottomley <JBottomley@Parallels.com> 
As pointed out by serveral people, PA1.1 only has a type 26 instruction
meaning that the space register must be explicitly encoded.  Not giving an
explicit space means that the compiler uses the type 24 version which is PA2.0
only resulting in an illegal instruction crash.

This regression was caused by

    commit f311847c2fcebd81912e2f0caf8a461dec28db41
    Author: James Bottomley <James.Bottomley@HansenPartnership.com>
    Date:   Wed Dec 22 10:22:11 2010 -0600

        parisc: flush pages through tmpalias space

Reported-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org	#2.6.39+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[PARISC] fix pacache .size with new binutils 2011-04-15T17:50:41+00:00 Meelis Roos mroos@linux.ee 2011-03-21T20:47:15+00:00 b54cd0d5053633373cd3c374aa203024cbf125a0 Fix style of flush_user_dcache_range_asm procedure declaration in arch/parisc/kernel/pacache.s to be consistent with other assembly procedures. Signed-off-by: Meelis Roos <mroos@linux.ee> Signed-off-by: James Bottomley <James.Bottomley@suse.de> 
Fix style of flush_user_dcache_range_asm procedure declaration in
arch/parisc/kernel/pacache.s to be consistent with other assembly
procedures.

Signed-off-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
parisc: flush pages through tmpalias space 2011-01-15T14:44:40+00:00 James Bottomley James.Bottomley@HansenPartnership.com 2010-12-22T16:22:11+00:00 f311847c2fcebd81912e2f0caf8a461dec28db41 The kernel has an 8M tmpailas space (originally designed for copying and clearing pages but now only used for clearing). The idea is to place zeros into the cache above a physical page rather than into the physical page and flush the cache, because often the zeros end up being replaced quickly anyway. We can also use the tmpalias space for flushing a page. The difference here is that we have to do tmpalias processing in the non access data and instruction traps. The principle is the same: as long as we know the physical address and have a virtual address congruent to the real one, the flush will be effective. In order to use the tmpalias space, the icache miss path has to be enhanced to check for the alias region to make the fic instruction effective. Signed-off-by: James Bottomley <James.Bottomley@suse.de> 
The kernel has an 8M tmpailas space (originally designed for copying
and clearing pages but now only used for clearing).  The idea is
to place zeros into the cache above a physical page rather than into
the physical page and flush the cache, because often the zeros end up
being replaced quickly anyway.

We can also use the tmpalias space for flushing a page.  The difference
here is that we have to do tmpalias processing in the non access data and
instruction traps.  The principle is the same: as long as we know the physical
address and have a virtual address congruent to the real one, the flush will
be effective.

In order to use the tmpalias space, the icache miss path has to be enhanced to
check for the alias region to make the fic instruction effective.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Revert "parisc: fix trivial section name warnings" 2008-06-13T14:49:45+00:00 Kyle McMartin kyle@minerva.i.cabal.ca 2008-05-22T18:36:31+00:00 dfcf753bd3fb09f336659d07b1c48db7e62772e0 This reverts commit bd3bb8c15b9a80dbddfb7905b237a4a11a4725b4. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> 
This reverts commit bd3bb8c15b9a80dbddfb7905b237a4a11a4725b4.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
parisc: use conditional macro for 64-bit wide ops 2008-05-15T15:03:43+00:00 Kyle McMartin kyle@mcmartin.ca 2008-05-15T14:53:57+00:00 872f6debcae63309eb39bfc2cc9462fb83450ee0 This work enables us to remove -traditional from $AFLAGS on parisc. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> 
This work enables us to remove -traditional from $AFLAGS on
parisc.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
parisc: fix trivial section name warnings 2008-05-15T14:38:54+00:00 Helge Deller deller@gmx.de 2008-05-02T20:02:48+00:00 bd3bb8c15b9a80dbddfb7905b237a4a11a4725b4 This trivial patch fixes the following section warnings on PARISC: > WARNING: vmlinux.o (.text.1): unexpected section name. >The (.[number]+) following section name are ld generated and not expected. > Did you forget to use "ax"/"aw" in a .S file? > Note that for example <linux/init.h> contains > section definitions for use in .S files. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> 
This trivial patch fixes the following section warnings on PARISC:
> WARNING: vmlinux.o (.text.1): unexpected section name.
>The (.[number]+) following section name are ld generated and not expected.
> Did you forget to use "ax"/"aw" in a .S file?
> Note that for example <linux/init.h> contains
> section definitions for use in .S files.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
[PARISC] Clean up pointless ASM_PAGE_SIZE_DIV use 2007-10-18T07:59:23+00:00 Kyle McMartin kyle@mcmartin.ca 2007-10-18T07:04:50+00:00 6ebeafff6452d89b294ba9b7402529b981b9624c Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> 
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
[PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro 2007-02-17T06:16:26+00:00 Helge Deller deller@gmx.de 2007-01-28T13:52:57+00:00 0b3d643f9ead9b5141dedbb2d1b06ce15469fc4a - this macro unifies the code to add exception table entries - additionally use ENTRY()/ENDPROC() at more places Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> 
- this macro unifies the code to add exception table entries
- additionally use ENTRY()/ENDPROC() at more places

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
[PARISC] more ENTRY(), ENDPROC(), END() conversions 2007-02-17T06:16:12+00:00 Helge Deller deller@gmx.de 2007-01-24T21:36:32+00:00 8e9e9844b44dd9f855d824d035b3097b199e44ed Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> 
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Remove obsolete #include <linux/config.h> 2006-06-30T17:25:36+00:00 Jörn Engel joern@wohnheim.fh-wedel.de 2006-06-30T17:25:36+00:00 6ab3d5624e172c553004ecc862bfeac16d9d68b7 Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de> 
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>