X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fx86_64%2Fkernel%2Fprocess.c;h=583d96f2291a262e5761a5abd0d75baa639eb428;hb=567f20a20be06ad546b5962340c4be268462055b;hp=c8c6440870afe1f6810209401b94b2279541f754;hpb=653a9213ae6f303790975dd836d95778aab070de;p=linux-2.6.git

diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index c8c644087..583d96f22 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -571,6 +571,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 		prev->gsindex = gsindex;
 	}
 
+	/* Must be after DS reload */
+	unlazy_fpu(prev_p);
+
 	/* 
 	 * Switch the PDA and FPU contexts.
 	 */
@@ -578,10 +581,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	write_pda(oldrsp, next->userrsp); 
 	write_pda(pcurrent, next_p); 
 
-	/* This must be here to ensure both math_state_restore() and
-	   kernel_fpu_begin() work consistently. 
-	   And the AMD workaround requires it to be after DS reload. */
-	unlazy_fpu(prev_p);
 	write_pda(kernelstack,
 		  task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);
 
@@ -636,6 +635,11 @@ long sys_execve(char __user *name, char __user * __user *argv,
 	if (IS_ERR(filename)) 
 		return error;
 	error = do_execve(filename, argv, envp, &regs); 
+	if (error == 0) {
+		task_lock(current);
+		current->ptrace &= ~PT_DTRACE;
+		task_unlock(current);
+	}
 	putname(filename);
 	return error;
 }