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authorKumar Gala <galak@kernel.crashing.org>2007-08-28 21:15:53 -0500
committerKumar Gala <galak@kernel.crashing.org>2007-08-28 21:15:53 -0500
commit0ee6c15e7ba7b36a217cdadb292eeaf32a057a59 (patch)
tree7ce7ee5413086758ebdea9a00f4d5b7d7a8f45ba /arch/powerpc
parentb07d68b5ca4d55a16fab223d63d5fb36f89ff42f (diff)
[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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/process.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a83727b308a..e477c9d0498 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -83,7 +83,7 @@ void flush_fp_to_thread(struct task_struct *tsk)
*/
BUG_ON(tsk != current);
#endif
- giveup_fpu(current);
+ giveup_fpu(tsk);
}
preempt_enable();
}
@@ -143,7 +143,7 @@ void flush_altivec_to_thread(struct task_struct *tsk)
#ifdef CONFIG_SMP
BUG_ON(tsk != current);
#endif
- giveup_altivec(current);
+ giveup_altivec(tsk);
}
preempt_enable();
}
@@ -182,7 +182,7 @@ void flush_spe_to_thread(struct task_struct *tsk)
#ifdef CONFIG_SMP
BUG_ON(tsk != current);
#endif
- giveup_spe(current);
+ giveup_spe(tsk);
}
preempt_enable();
}