linux-toradex.git/arch/ppc64/kernel, branch v2.6.12.3

[PATCH] ppc64: Fix PER_LINUX32 behaviour

2005-06-08T23:24:15+00:00

This patch fixes some bugs in the ppc64 PER_LINUX32 implementation,
noted by Juergen Kreileder:

* uname(2) doesn't respect PER_LINUX32, it returns 'ppc64' instead of 'ppc'
* Child processes of a PER_LINUX32 process don't inherit PER_LINUX32

Along the way I took the opportunity to move things around so that
sys_ppc32.c only has 32-bit syscall emulation functions and to remove
the obsolete "fakeppc" command line option.

Signed-off-by: Paul Mackerras 
Signed-off-by: Linus Torvalds

[PATCH] ppc64 kprobes: remove spurious MSR_SE masking

2005-06-08T23:21:13+00:00

Remove spurious MSR_SE reset during kprobe processing.
single_step_exception() already does it for us.  Reset it to be safe when
executing the fault_handler.

Signed-off-by: Ananth N Mavinakayanahalli 
Signed-off-by: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc64 kprobes: correct kprobe registration return values

2005-06-08T23:21:13+00:00

Add stricter checks during kprobe registration.  Return correct error value so
insmod doesn't succeed.  Also printk reason for registration failure.

Signed-off-by: Ananth N Mavinakayanahalli 
Signed-off-by: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc64 kprobes: don't eat dabr/iabr exceptions

2005-06-08T17:18:59+00:00

Kprobes was eating the hardware instruction and data address
breakpoint exceptions.  This patch fixes it; kprobes doesn't use those
exceptions at all and should ignore them.

Signed-off-by: Ananth N Mavinakayanahalli 
Signed-off-by: Paul Mackerras 
Signed-off-by: Linus Torvalds

[PATCH] prom_find_machine_type typo breaks pSeries lpar boot

2005-06-03T20:20:04+00:00

A typo in prom_find_machine_type from Ben's recent patch "ppc64: Fix
result code handling in prom_init" prevents pSeries LPAR systems from
booting.

Tested on a pSeries 570 and OpenPower 720 (both Power5 LPAR).

Signed-off-by: Nathan Lynch 
Signed-off-by: Linus Torvalds

[PATCH] ppc64: remove decr_overclock

2005-06-02T22:12:30+00:00

Now that we have HZ=1000 there is much less of a need for decr_overclock.
Remove it.

Leave spread_lpevents but move it into iSeries_setup.c.  We should look at
making event spreading the default some day.

Signed-off-by: Anton Blanchard 
Acked-by: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc64: cleanup iseries runlight support

2005-06-02T22:12:30+00:00

The iseries has a bar graph on the front panel that shows how busy it is.
The operating system sets and clears a bit in the CTRL register to control
it.

Instead of going to the complexity of using a thread info bit, just set and
clear it in the idle loop.

Also create two helper functions, ppc64_runlatch_on and ppc64_runlatch_off.

Finally don't use the short form of the SPR defines.

Signed-off-by: Anton Blanchard 
Acked-by: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ppc64: Fix result code handling in prom_init

2005-06-02T15:19:27+00:00

prom_init(), the trampoline code that "talks" to Open Firmware during
early boot, has various issues with managing OF result codes. Some of my
recent fixups in fact made the problem worse on some platforms.

This patch reworks it all. Tested on g5, Maple, POWER3 and POWER5.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

[PATCH] ppc32/ppc64: cleanup /proc/device-tree

2005-06-01T14:54:14+00:00

This cleans up the /proc/device-tree representation of the Open Firmware
device-tree on ppc and ppc64.  It does the following things:

 - Workaround an issue in some Apple device-trees where a property may
   exist with the same name as a child node of the parent.  We now
   simply "drop" the property instead of creating duplicate entries in
   /proc with random result...

 - Do not try to chop off the "@0" at the end of a node name whose unit
   address is 0.  This is not useful, inconsistent, and the code was
   buggy and didn't always work anyway.

 - Do not create symlinks for the short name and unit address parts of a
   node.  These were never really used, bloated the memory footprint of
   the device-tree with useless struct proc_dir_entry and their matching
   dentry and inode cache bloat.

This results in smaller code, smaller memory footprint, and a more
accurate view of the tree presented to userland.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds

[PATCH] ppc64: Fix a device-tree bug on Apple's

2005-06-01T14:54:13+00:00

Apple's Open Firmware has a funny bug when creating the /cpus nodes
where it leaves a dangling '\0' character in the CPU name which ends up
appearing in the full path of the node. This is bogus and
confuses /proc/device-tree badly.

This patch strips those bogus zero's from the node full path when
reading the device-tree from Open Firmware. The "name" property is not
modified and still contains the spurrious 0 (it basically contains 0
tailing 0 instead of one) but that shouldn't be a problem.

An equivalent patch for ppc32 will follow shortly

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Linus Torvalds