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s390/sclp: improve special wait psw logic 

There is a special quiesce PSW that we check for "shutdown". Otherwise disabled
wait is detected as "crashed". Architecturally we must only check PSW bits
116-127. Fix this.

Cc: qemu-stable@nongnu.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1582204582-22995-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Christian Borntraeger 2020-02-20 14:16:22 +01:00 committed by Cornelia Huck
parent b91a03946e
commit 8b51c0961c
1 changed files with 1 additions and 1 deletions
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2
target/s390x/helper.c
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@ -89,7 +89,7 @@ hwaddr s390_cpu_get_phys_addr_debug(CPUState *cs, vaddr vaddr)
static inline bool is_special_wait_psw(uint64_t psw_addr)
{
/* signal quiesce */
return psw_addr == 0xfffUL;
return (psw_addr & 0xfffUL) == 0xfffUL;
}
void s390_handle_wait(S390CPU *cpu)