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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-05-27 18:13:41 +0200 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-06-22 15:53:22 +0200 |
| commit | 16f9afe651e8197fb7ce6df0990d8e2ad779e1af (patch) | |
| tree | c6482028a0ceced44e7e4819f7741c2fd8084e3e /arch/arc/kernel/process.c | |
| parent | ARC: pt_regs update #2: Remove unused gutter at start of pt_regs (diff) | |
| download | linux-16f9afe651e8197fb7ce6df0990d8e2ad779e1af.tar.xz linux-16f9afe651e8197fb7ce6df0990d8e2ad779e1af.zip | |
ARC: pt_regs update #3: Remove unused gutter at start of callee_regs
This is trickier than prev two:
* context switching code saves kernel mode callee regs in the format of
struct callee_regs thus needs adjustment. This also reduces the height
of topmost kernel stack frame by 1 word.
* Since kernel stack unwinder is sensitive to height of topmost kernel
stack frame, that needs a word of adjustment too.
ptrace needs a bit of updating since pt_regs now diverges from
user_regs_struct.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel/process.c')
| -rw-r--r-- | arch/arc/kernel/process.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index 949bfd5d62a0..db868db82944 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -55,10 +55,8 @@ asmlinkage void ret_from_fork(void); * | ... | * | unused | * | | - * ------------------ <==== top of Stack (thread.ksp) - * | UNUSED 1 word| * ------------------ - * | r25 | + * | r25 | <==== top of Stack (thread.ksp) * ~ ~ * | --to-- | (CALLEE Regs of user mode) * | r13 | |