kernel.git/arch/powerpc/Makefile, branch linux-2.6.24.y

[POWERPC] Add -mno-spe for ARCH=powerpc builds

2007-11-09T09:47:29Z

Newer GCC's are capable of autovectorization for ISA extensions like AltiVec and SPE. If we happen to build with one of those compilers we will get SPE instructions in random kernel code. Today we only allow basic interger code in the kernel and FP, AltiVec, or SPE in special explicit locations that have handled the proper saving and restoring of the register state (since on uniprocessor we lazy context switch the register state for FP, AltiVec, and SPE). -mno-spe disables the compiler for automatically generating SPE instructions without our knowledge. Signed-off-by: Kumar Gala

kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP

2007-10-15T20:17:25Z

The variable CPPFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the tree and enabling one to use: make CPPFLAGS=... to specify additional CPP commandline options. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390 Signed-off-by: Sam Ravnborg

kbuild: enable 'make AFLAGS=...' to add additional options to AS

2007-10-15T19:59:31Z

The variable AFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of AFLAGS with KBUILD_AFLAGS all over the tree. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390 Signed-off-by: Sam Ravnborg

kbuild: enable 'make CFLAGS=...' to add additional options to CC

2007-10-14T20:21:35Z

The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg

[POWERPC] Select proper defconfig for crosscompiles

2007-10-03T02:02:44Z

The trick for finding the right defconfig is neat, but you forgot to provide an i686_defconfig. ;-) More seriously, cross compiling the defconfig is often useful, e.g. for testing the compilation of patches that touch multiple architectures, and this patch therefore chooses g5_defconfig if $(CROSS_COMPILE) is non-empty. Signed-off-by: Adrian Bunk Acked-by: Sam Ravnborg Cc: Benjamin Herrenschmidt Cc: Olof Johansson Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[POWERPC] powerpc vDSO: install unstripped copies on disk

2007-10-03T02:02:43Z

This keeps an unstripped copy of the vDSO images built before they are stripped and embedded in the kernel. The unstripped copies get installed in $(MODLIB)/vdso/ by "make install". These files can be useful when they contain source-level debugging information. Signed-off-by: Roland McGrath Cc: Sam Ravnborg Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[POWERPC] Create and use CONFIG_WORD_SIZE

2007-10-02T23:12:02Z

Linus made this suggestion for the x86 merge and this starts the process for powerpc. We assume that CONFIG_PPC64 implies CONFIG_PPC_MERGE and CONFIG_PPC_STD_MMU_32 implies CONFIG_PPC_STD_MMU. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] add Kconfig option for optimizing for cell

2007-09-22T04:49:22Z

Since the PPE on cell is an in-order core, it suffers significantly from wrong instruction scheduling. This adds a Kconfig option that enables passing -mtune=cell to gcc in order to generate object code that runs well on cell. Signed-off-by: Arnd Bergmann Signed-off-by: Paul Mackerras

[POWERPC] Stop include asm-ppc when building ARCH=powerpc for ppc32

2007-08-23T03:47:33Z

We no longer have any dependancies on include/asm-ppc so we can get ride of the makefile hacks to include it in the build process. Signed-off-by: Kumar Gala

[POWERPC] Rename 4xx paths to 40x

2007-08-20T12:27:07Z

4xx is a bit of a misnomer for certain things, as they really apply to PowerPC 40x only. Rename some of the files to clean this up. Signed-off-by: Josh Boyer Acked-by: David Gibson