kernel.git/arch/powerpc/platforms/pseries, branch linux-2.6.21.y

[POWERPC] Bypass hcall stats until cpu features have run

2007-03-22T04:01:43Z

I noticed that we execute hcalls before cpu feature code has run (eg for setting up the bolted kernel region). This means that we may be executing code that is not appropriate for the processor we have. Create an unconditional branch that we nop out all the time to fix this. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras

[POWERPC] Avoid hypervisor statistics calculation in real mode

2007-03-22T04:01:43Z

kexec invokes plpar_hcall hypervisor call in real mode. plpar_hcall refers to per cpu variables for accounting hypervisor statistics. These variables may not be in the RMO region, so accesses to them in real mode may result in a data storage exception. This fixes this problem by using a new plpar_hcall_raw function which does not update the hypervisor call statistics. Thanks to Anton for suggesting this idea. Signed-off-by: Mohan Kumar M Signed-off-by: Paul Mackerras

[POWERPC] pseries: Enabling auto poweron after power is restored.

2007-02-16T23:22:50Z

During power outages, the UPS notifies the system for a shutdown. In the current setup, it isn't possible to poweron when power is restored. This patch fixes the issue by calling the right ibm,power-off-ups token during such events. It also adds a sysfs interface so userspace can specify whether or not to power on when power is restored. Signed-off-by: Manish Ahuja Signed-off-by: Paul Mackerras

[POWERPC] Fix cut and paste breakage in arch/powerpc/platforms/pseries/pseries.h

2007-02-16T03:00:20Z

My "cleanup" patch (dce623e0827e8d0ad60ce7f385c3394bf1b0bae0) had a cut and paste error for the !CONFIG_KEXEC case. Fifty lashes for me. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras

[POWERPC] Cleanup pseries kexec code

2007-02-14T00:50:03Z

Move all the pseries kexec code into one file, platforms/pseries/kexec.c Provide helpers for setting up ppc_md.kexec_cpu_down, so that we don't have to have #ifdef CONFIG_KEXEC in setup.c Move the initialisation of the ppc_md kexec callbacks into an init routine. This is well and truly early enough to cause no change in behaviour, we can't kexec until userspace has given us a kernel to kexec into. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras

[POWERPC] Cleanup pseries smp initialisation code

2007-02-14T00:50:03Z

Move some extern declarations from setup.c into the new pseries.h. While we're at it, provide dummy implementations for !SMP, to avoid cluttering the C file with more #ifdefs. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras

[POWERPC] Consolidate pseries platform header files into pseries.h

2007-02-14T00:50:03Z

Following the example of platforms/pasemi, consolidate a couple of tiny header files in platforms/pseries into pseries.h. This gives us a convenient place to put things that need to be available to the platform code, but not public. And hopefully will help people resist the temptation of sticking externs in C files. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras

[POWERPC] Mark winbond IDE PCI resources with start 0 as unassigned

2007-02-13T04:35:52Z

libata calls pci_request_regions to claim PCI BAR 0 - 5 pci_request_regions fails if one of the regions cant be claimed. bar 5 has start == 0, __request_resource will fail. Tested on a p630 in SMP mode with pata_sl82c105 00:03.1 IDE interface: Symphony Labs SL82c105 (rev 05) (prog-if 8f [Master SecP SecO PriP PriO]) Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Signed-off-by: Paul Mackerras

[PATCH] mark struct file_operations const 2

2007-02-12T17:48:44Z

Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. [akpm@osdl.org: sparc64 fix] Signed-off-by: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] proc: remove useless (and buggy) ->nlink settings

2007-02-11T18:51:32Z

Bug: pnx8550 code creates directory but resets ->nlink to 1. create_proc_entry() et al will correctly set ->nlink for you. Signed-off-by: Alexey Dobriyan Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Jeff Dike Cc: Corey Minyard Cc: Alan Cox Cc: Kyle McMartin Cc: Martin Schwidefsky Cc: Greg KH Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds