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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-11 14:10:35 (GMT) |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-14 23:35:52 (GMT) |
| commit | 40792104b2550ee067f63c3ccc8ea04747dc5037 (patch) | |
| tree | 0741b5e53e5dddd298eb583b8c937d2fc5faa0e5 | |
| parent | 138d1ce80ed96eff6638f454f0a1500a4aefd17b (diff) | |
| download | linux-fsl-qoriq-40792104b2550ee067f63c3ccc8ea04747dc5037.tar.xz | |
powerpc: don't mess with r2 in copy_thread() and friends
kernel_thread() callbacks are *not* in modules and are not going to
be there. And it's not even read in ppc32 ret_from_kernel_thread(),
so no need to bother with it there either.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 2 |
2 files changed, 0 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 2eb766a..8fdb051 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -373,7 +373,6 @@ _GLOBAL(ret_from_fork) _GLOBAL(ret_from_kernel_thread) bl .schedule_tail REST_NVGPRS(r1) - REST_GPR(2,r1) mtlr r14 mr r3,r15 blrl diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 9e685e2..7fc70f2 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -751,12 +751,10 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, childregs->gpr[1] = sp + sizeof(struct pt_regs); #ifdef CONFIG_PPC64 childregs->gpr[14] = *(unsigned long *)usp; - childregs->gpr[2] = ((unsigned long *)usp)[1], clear_tsk_thread_flag(p, TIF_32BIT); childregs->softe = 1; #else childregs->gpr[14] = usp; /* function */ - childregs->gpr[2] = (unsigned long) p; #endif childregs->gpr[15] = arg; p->thread.regs = NULL; /* no user register state */ |