In-Reply-To: <20061228103925.GB6270@skybase>
On Thu, 28 Dec 2006 11:39:25 +0100, Martin Schwidefsky wrote:
> @@ -881,10 +880,18 @@ static void cio_reset_pgm_check_handler(
> static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr)
> {
> int rc;
> + register struct subchannel_id reg1 asm ("1") = schid;
>
> pgm_check_occured = 0;
> s390_reset_pgm_handler = cio_reset_pgm_check_handler;
> - rc = stsch(schid, addr);
> +
> + asm volatile(
> + " stsch 0(%2)\n"
> + " ipm %0\n"
> + " srl %0,28"
> + : "=d" (rc)
> + : "d" (reg1), "a" (addr), "m" (*addr) : "memory", "cc");
> +
> s390_reset_pgm_handler = NULL;
> if (pgm_check_occured)
> return -EIO;
Can't you just put a barrier() before the stsch() call?
--
MBTI: IXTP
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