提交 21b26c08 编写于 作者: C Cornelia Huck 提交者: Marcelo Tosatti

KVM: s390: Fix sigp sense handling.

If sigp sense doesn't have any status bits to report, it should set
cc 0 and leave the register as-is.

Since we know about the external call pending bit, we should report
it if it is set as well.
Acked-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
上级 ea1918dd
......@@ -24,6 +24,7 @@
#define SIGP_STATUS_CHECK_STOP 0x00000010UL
#define SIGP_STATUS_STOPPED 0x00000040UL
#define SIGP_STATUS_EXT_CALL_PENDING 0x00000080UL
#define SIGP_STATUS_INVALID_PARAMETER 0x00000100UL
#define SIGP_STATUS_INCORRECT_STATE 0x00000200UL
#define SIGP_STATUS_NOT_RUNNING 0x00000400UL
......
......@@ -32,12 +32,16 @@ static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
if (fi->local_int[cpu_addr] == NULL)
rc = SIGP_CC_NOT_OPERATIONAL;
else if (!(atomic_read(fi->local_int[cpu_addr]->cpuflags)
& CPUSTAT_STOPPED)) {
*reg &= 0xffffffff00000000UL;
rc = SIGP_CC_STATUS_STORED;
} else {
& (CPUSTAT_ECALL_PEND | CPUSTAT_STOPPED)))
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
else {
*reg &= 0xffffffff00000000UL;
*reg |= SIGP_STATUS_STOPPED;
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
& CPUSTAT_ECALL_PEND)
*reg |= SIGP_STATUS_EXT_CALL_PENDING;
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
& CPUSTAT_STOPPED)
*reg |= SIGP_STATUS_STOPPED;
rc = SIGP_CC_STATUS_STORED;
}
spin_unlock(&fi->lock);
......
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