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| author |   Vasily Gorbik <gor@linux.ibm.com> | 2018-09-14 17:35:46 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-09-20 13:20:29 +0200 |
| commit | 4e62d458850069c9f05e03f99be1a817967e201f (patch) | |
| tree | 36930d2ada8892e0b888c1cddcf9cba830b36c33 /arch/s390/purgatory | |
| parent | s390/vdso: correct CFI annotations of vDSO functions (diff) | |
| download | linux-dev-4e62d458850069c9f05e03f99be1a817967e201f.tar.xz linux-dev-4e62d458850069c9f05e03f99be1a817967e201f.zip | |
s390: clean up stacks setup
Replace hard coded stack frame overhead values with STACK_FRAME_OVERHEAD
definition. Avoid unnecessary arithmetic instructions.
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/purgatory')
| -rw-r--r-- | arch/s390/purgatory/head.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/purgatory/head.S b/arch/s390/purgatory/head.S index 2e3707b12edd..5a10ce34b95d 100644 --- a/arch/s390/purgatory/head.S +++ b/arch/s390/purgatory/head.S @@ -11,6 +11,7 @@ #include <asm/asm-offsets.h> #include <asm/page.h> #include <asm/sigp.h> +#include <asm/ptrace.h> /* The purgatory is the code running between two kernels. It's main purpose * is to verify that the next kernel was not corrupted after load and to @@ -88,8 +89,7 @@ ENTRY(purgatory_start) .base_crash: /* Setup stack */ - larl %r15,purgatory_end - aghi %r15,-160 + larl %r15,purgatory_end-STACK_FRAME_OVERHEAD /* If the next kernel is KEXEC_TYPE_CRASH the purgatory is called * directly with a flag passed in %r2 whether the purgatory shall do |