linux-stable.git/arch/s390/kernel/head.S, branch linux-3.3.y

[S390] entry[64].S improvements

2011-12-27T10:27:12+00:00

Another round of cleanup for entry[64].S, in particular the program check
handler looks more reasonable now. The code size for the 31 bit kernel
has been reduced by 616 byte and by 528 byte for the 64 bit version.
Even better the code is a bit faster as well.

Signed-off-by: Martin Schwidefsky

[S390] kdump backend code

2011-10-30T14:16:42+00:00

This patch provides the architecture specific part of the s390 kdump
support.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

[S390] fix s390 assembler code alignments

2011-07-24T08:48:21+00:00

The alignment is missing for various global symbols in s390 assembly code.
With a recent gcc and an instruction like stgrl this can lead to a
specification exception if the instruction uses such a mis-aligned address.

Specify the alignment explicitely and while add it define __ALIGN for s390
and use the ENTRY define to save some lines of code.

Signed-off-by: Jan Glauber 
Signed-off-by: Martin Schwidefsky

[S390] compile fix for latest binutils

2011-04-04T07:43:33+00:00

The latest binutils won't accept the stfl instruction with march=g5
which is the correct behaviour. Unfortunately head.S is assembled
with -march=g5 even if the target cpu is z900 or later. To get
31-bit kernels compiled again the easiest fix is to use the .insn
notation for the stfl instruction in head.S.

Signed-off-by: Martin Schwidefsky

[S390] Add config option for z196 code generation.

2010-10-25T14:10:15+00:00

Add a kernel config option for the IBM zEnterprise 196. This will
produce faster code on newer compilers using the -march=z196 option.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] initrd: change default load address

2010-08-09T16:12:54+00:00

Change default load address of the initrd in case of IPL from reader.
The new load address is directly behind the kernel image.
This way we can see immediatly if there are any problems with the code
which tries to rescue the initrd in case the bootmem bitmap would
overlap with the initrd.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] More cleanup for struct _lowcore

2010-05-17T08:00:15+00:00

Remove cpu_id from lowcore and replace addr_t with __u64.

Signed-off-by: Martin Schwidefsky

[S390] fix boot failures with compressed kernels

2010-03-24T10:49:54+00:00

Fix two bugs with the kernel image compression:
1) reset the bss section of the compressed vmlinux
2) clear the high half of the registers for 64 bit early enough
   for the decompression step

Signed-off-by: Martin Schwidefsky

[S390] add support for compressed kernels

2010-02-26T21:37:33+00:00

Add the "bzImage" compile target and the necessary code  to generate
compressed kernel images. The old style uncompressed "image" target
is preserved, a simple make will build them both.

Signed-off-by: Martin Schwidefsky

[S390] codepage conversion of kernel parameter line

2010-02-26T21:37:32+00:00

Move the ebcdic to ascii conversion of the kernel parameter line from
head.S to early.c and convert the assembler code to C.

Signed-off-by: Martin Schwidefsky