tree 7ce7ee5413086758ebdea9a00f4d5b7d7a8f45ba
parent b07d68b5ca4d55a16fab223d63d5fb36f89ff42f
author Kumar Gala <galak@kernel.crashing.org> 1188353753 -0500
committer Kumar Gala <galak@kernel.crashing.org> 1188353753 -0500

[POWERPC] Flush registers to proper task context

When we flush register state for FP, Altivec, or SPE in flush_*_to_thread
we need to respect the task_struct that the caller has passed to us.

Most cases we are called with current, however sometimes (ptrace) we may
be passed a different task_struct.

This showed up when using gdbserver debugging a simple program that used
floating point. When gdb tried to show the FP regs they all showed up as
0, because the child's FP registers were never properly flushed to memory.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>