提交 e47994dd 编写于 作者: H Heiko Carstens 提交者: Martin Schwidefsky

s390/process: fix sfpc inline assembly

The sfpc inline assembly within execve_tail() may incorrectly set bits
28-31 of the sfpc instruction to a value which is not zero.
These bits however are currently unused and therefore should be zero
so we won't get surprised if these bits will be used in the future.

Therefore remove the second operand from the inline assembly.

Cc: <stable@vger.kernel.org>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
上级 f81a49d1
......@@ -163,7 +163,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
asmlinkage void execve_tail(void)
{
current->thread.fp_regs.fpc = 0;
asm volatile("sfpc %0,%0" : : "d" (0));
asm volatile("sfpc %0" : : "d" (0));
}
/*
......
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