kernel.git/arch/s390/Makefile, branch linux-3.19.y

s390: pass march flag to assembly files as well

2014-09-09T06:53:28Z

Currently the march flag gets only passed to C files, but not to assembler files. This means that we can't add new instructions like e.g. aghik to asm files, since the assembler doesn't know of the new instructions if the appropriate march flag isn't specified. So also pass the march flag when compiling assembler files as well. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: allow to set gcc -mtune flag

2013-10-31T08:54:01Z

Add a new Kconfig choice group which allows to configure how gcc should tune the generated code (via -mtune option). By default the -mtune parameter will match the -march parameter. This is a rather large patch, but I wouldn't know how to make this shorter unfortunately. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: always set -march compiler option

2013-10-24T15:16:44Z

Currently we only set the -march compiler option if the kbuild system figured out that the compiler actually supports the selected architecture (cc-option test). In result this means that no -march compiler option is set when an unsupported cpu architecture of the current compiler is selected. The kernel compile will afterwards succeed but with the default architecture instead of the (unsupported) selected one. Change this behaviour, so compiles will fail if the compiler does not support the selected cpu architecture. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: remove small stack config option

2013-04-26T07:07:08Z

We've seen repeatedly that 8KB stack size on 64 bit kernels is not sufficient. So simply remove the config option. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: use -fPIC for module compile

2013-01-12T17:49:26Z

The xfs module uses a lot of tracepoint, with TRACEPOINTS=y and a few debugging options the GOT table of the xfs module will get bigger than 4K. To get a working xfs module it needs to be compiled with -fPIC instead of -fpic. To play safe use -fPIC for all modules. Signed-off-by: Martin Schwidefsky

s390: add zEC12 code generation support

2012-11-23T10:14:31Z

Allow to generate code that only runs on zEC12 machines. Also add a check which prevents the kernel to run on machines which do not have any of the following new facilities installed: - (48) decimal-floating-point zoned-conversion - (49) execution-hint - (49) load-and-trap - (49) miscellaneous-instruction-extensions - (49) processor-assist - (50) constrained transactional-execution - (73) transactional-execution 48, 49, 50 and 73 are the bit numbers of the facility indications for each of the required facilities. Note that we assume that user-space gets compiled with the same compiler options, therefore we also test for a dfp facility even if the kernel doesn't make use of it. Signed-off-by: Heiko Carstens

s390: Use generic init_task

2012-05-05T11:00:25Z

Same code. Use the generic version. The special Makefile treatment is pointless anyway as init_task.o contains only data which is handled by the linker script. So no point on being treated like head text. Signed-off-by: Thomas Gleixner Cc: Martin Schwidefsky Acked-by: Heiko Carstens Link: http://lkml.kernel.org/r/20120503085035.271439530@linutronix.de

[S390] cleanup entry point definition

2012-01-18T17:03:41Z

The vmlinux file for s390 contains a currently unused entry point, which is specified in two different locations: the linker script and the makefile. As it happens both definitions are different and the linker file is broken (_start does not exist) and the makefile specifies an entry point which makes no sense (the SALIPL loader entry point). So lets get rid of one definition (the makefile) and use the entry point of all other ipl methods (0x10000 -> startup) to be consistent. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky

[S390] make arch/s390 subdirectories depend on config option

2011-12-27T10:27:12Z

Only add subdirectories of arch/s390 to kbuild if their respective config option is selected. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky

[S390] remove redundant stack check option

2011-03-15T16:08:22Z

Newer gcc versions offer an architecture-independent option to check the stack size and warn if it reaches a certain limit. This option already existed for s390 by using -mwarn-dynamicstack. Since one stack check option is enough remove the s390 specific stack check but keep the option that warns about dynamic stack usage because that is not covered by the generic option. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky