kernel.git/arch/powerpc/Makefile, branch linux-2.6.28.y

ftrace: rename FTRACE to FUNCTION_TRACER

2008-10-20T16:27:03Z

Due to confusion between the ftrace infrastructure and the gcc profiling tracer "ftrace", this patch renames the config options from FTRACE to FUNCTION_TRACER. The other two names that are offspring from FTRACE DYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same. This patch was generated mostly by script, and partially by hand. Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar

powerpc: Enforce a non-spe kernel build even on broken compilers

2008-09-15T18:08:41Z

Those two are required on my fresh gcc 4.3.1. Signed-off-by: Thiemo Seufer Signed-off-by: Sebastian Siewior Signed-off-by: Paul Mackerras

powerpc: Make the 64-bit kernel as a position-independent executable

2008-09-15T18:08:38Z

This implements CONFIG_RELOCATABLE for 64-bit by making the kernel as a position-independent executable (PIE) when it is set. This involves processing the dynamic relocations in the image in the early stages of booting, even if the kernel is being run at the address it is linked at, since the linker does not necessarily fill in words in the image for which there are dynamic relocations. (In fact the linker does fill in such words for 64-bit executables, though not for 32-bit executables, so in principle we could avoid calling relocate() entirely when we're running a 64-bit kernel at the linked address.) The dynamic relocations are processed by a new function relocate(addr), where the addr parameter is the virtual address where the image will be run. In fact we call it twice; once before calling prom_init, and again when starting the main kernel. This means that reloc_offset() returns 0 in prom_init (since it has been relocated to the address it is running at), which necessitated a few adjustments. This also changes __va and __pa to use an equivalent definition that is simpler. With the relocatable kernel, PAGE_OFFSET and MEMORY_START are constants (for 64-bit) whereas PHYSICAL_START is a variable (and KERNELBASE ideally should be too, but isn't yet). With this, relocatable kernels still copy themselves down to physical address 0 and run there. Signed-off-by: Paul Mackerras

powerpc: Work around gcc's -fno-omit-frame-pointer bug

2008-09-03T10:53:34Z

This bug is causing random crashes (http://bugzilla.kernel.org/show_bug.cgi?id=11414). -fno-omit-frame-pointer is only needed on powerpc when -pg is also supplied, and there is a gcc bug that causes incorrect code generation on 32-bit powerpc when -fno-omit-frame-pointer is used---it uses stack locations below the stack pointer, which is not allowed by the ABI because those locations can and sometimes do get corrupted by an interrupt. This ensures that CONFIG_FRAME_POINTER is only selected by ftrace. When CONFIG_FTRACE is enabled we also pass -mno-sched-epilog to work around the gcc codegen bug. Patch based on work by: Andreas Schwab Segher Boessenkool Signed-off-by: Tony Breeds Signed-off-by: Paul Mackerras

powerpc/bootwrapper: Add documentation of boot wrapper targets

2008-07-04T06:59:03Z

There have been many questions on and off the mailing list about how exactly the bootwrapper is used for embedded targets. Add some documentation and help text to try and clarify the system. Signed-off-by: Grant Likely

powerpc: Get rid of CROSS32{AS,LD,OBJCOPY}

2008-06-30T12:30:39Z

CROSS32AS and CROSS32LD are never used (instead, CROSS32CC is used with proper command line options). CROSS32OBJCOPY isn't used anymore either, since the "wrapper" stuff was added. Remove these unused variables. Signed-off-by: Segher Boessenkool Signed-off-by: Paul Mackerras

[POWERPC] Fix -Os kernel builds with newer gcc versions

2008-06-16T05:00:54Z

GCC 4.4.x looks to be adding support for generating out-of-line register saves/restores based on: http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html This breaks the kernel if we enable CONFIG_CC_OPTIMIZE_FOR_SIZE. To fix this we add the use the save/restore code from gcc and simplified it down for our needs (integer only). Additionally, we have to link this code into each module. The other solution was to add EXPORT_SYMBOL() which meant going through the trampoline which seemed nonsensical for these out-of-line routines. Finally, we add some checks to prom_init_check.sh to ignore the out-of-line save/restore functions. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras

[POWERPC] bootwrapper: add simpleImage* to list of boot targets

2008-06-11T11:42:34Z

Without simpleImage% in the BOOT_TARGETS list, it is impossible to build any of the simpleImages. Signed-off-by: Grant Likely Signed-off-by: Josh Boyer

KVM: ppc: PowerPC 440 KVM implementation

2008-04-27T15:21:39Z

This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard Acked-by: Paul Mackerras Signed-off-by: Stephen Rothwell Signed-off-by: Avi Kivity

[POWERPC] Provide access to arch/powerpc include path on ppc64

2008-04-16T21:46:12Z

There does not appear to be any reason that we shouldn't just have -Iarch/$(ARCH) on both ppc32 and ppc64 builds. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras