linux-toradex.git/arch/ppc/kernel/traps.c, branch v2.6.23.17

Report that kernel is tainted if there was an OOPS

2007-07-17T17:23:02+00:00

If the kernel OOPSed or BUGed then it probably should be considered as
tainted.  Thus, all subsequent OOPSes and SysRq dumps will report the
tainted kernel.  This saves a lot of time explaining oddities in the
calltraces.

Signed-off-by: Pavel Emelianov 
Acked-by: Randy Dunlap 
Cc: 
Signed-off-by: Andrew Morton 
[ Added parisc patch from Matthew Wilson  -Linus ]
Signed-off-by: Linus Torvalds

generic bug: use show_regs() instead of dump_stack()

2007-07-16T16:05:51+00:00

The current generic bug implementation has a call to dump_stack() in case a
WARN_ON(whatever) gets hit.  Since report_bug(), which calls dump_stack(),
gets called from an exception handler we can do better: just pass the
pt_regs structure to report_bug() and pass it to show_regs() in case of a
warning.  This will give more debug informations like register contents,
etc...  In addition this avoids some pointless lines that dump_stack()
emits, since it includes a stack backtrace of the exception handler which
is of no interest in case of a warning.  E.g.  on s390 the following lines
are currently always present in a stack backtrace if dump_stack() gets
called from report_bug():

 [<000000000001517a>] show_trace+0x92/0xe8)
 [<0000000000015270>] show_stack+0xa0/0xd0
 [<00000000000152ce>] dump_stack+0x2e/0x3c
 [<0000000000195450>] report_bug+0x98/0xf8
 [<0000000000016cc8>] illegal_op+0x1fc/0x21c
 [<00000000000227d6>] sysc_return+0x0/0x10

Acked-by: Jeremy Fitzhardinge 
Acked-by: Haavard Skinnemoen 
Cc: Andi Kleen 
Cc: Kyle McMartin 
Cc: Paul Mackerras 
Cc: Paul Mundt 
Cc: Martin Schwidefsky 
Signed-off-by: Heiko Carstens 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] Spelling fixes: arch/ppc/

2007-05-12T01:32:49+00:00

Spelling fixes in arch/ppc/.

Signed-off-by: Simon Arlott 
Signed-off-by: Paul Mackerras

[PATCH] use generic BUG for ppc

2006-12-08T16:28:39+00:00

Switch ppc over to using the generic BUG implementation.

Signed-off-by: Judith Lebzelter 
Cc: Jeremy Fitzhardinge 
Cc: Michael Ellerman 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] Book-E reg MCSR msg misquoted

2006-12-04T09:39:22+00:00

PPC/booke reg MCSR value misquoted

Signed-off-by: nkalmala 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Acked-by: Kumar Gala 
Signed-off-by: Paul Mackerras

[POWERPC] Make alignment exception always check exception table

2006-11-01T04:16:04+00:00

The alignment exception used to only check the exception table for
-EFAULT, not for other errors. That opens an oops window if we can
coerce the kernel into getting an alignment exception for other reasons
in what would normally be a user-protected accessor, which can be done
via some of the futex ops. This fixes it by always checking the
exception tables.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[PATCH] pidspace: is_init()

2006-09-29T16:18:12+00:00

This is an updated version of Eric Biederman's is_init() patch.
(http://lkml.org/lkml/2006/2/6/280).  It applies cleanly to 2.6.18-rc3 and
replaces a few more instances of ->pid == 1 with is_init().

Further, is_init() checks pid and thus removes dependency on Eric's other
patches for now.

Eric's original description:

	There are a lot of places in the kernel where we test for init
	because we give it special properties.  Most  significantly init
	must not die.  This results in code all over the kernel test
	->pid == 1.

	Introduce is_init to capture this case.

	With multiple pid spaces for all of the cases affected we are
	looking for only the first process on the system, not some other
	process that has pid == 1.

Signed-off-by: Eric W. Biederman 
Signed-off-by: Sukadev Bhattiprolu 
Cc: Dave Hansen 
Cc: Serge Hallyn 
Cc: Cedric Le Goater 
Cc: 
Acked-by: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk

[PATCH] powerpc: trivial: modify comments to refer to new location of files

2006-02-10T05:53:51+00:00

This patch removes all self references and fixes references to files
in the now defunct arch/ppc64 tree.  I think this accomplises
everything wanted, though there might be a few references I missed.

Signed-off-by: Jon Mason 
Signed-off-by: Paul Mackerras

[PATCH] ppc: Remove powermac support from ARCH=ppc

2006-01-15T06:30:44+00:00

This makes it possible to build kernels for PReP and/or CHRP
with ARCH=ppc by removing the (non-building) powermac support.
It's now also possible to select PReP and CHRP independently.
Powermac users should now build with ARCH=powerpc instead of
ARCH=ppc.  (This does mean that it is no longer possible to
build a 32-bit kernel for a G5.)

Signed-off-by: Paul Mackerras