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authorCornelia Huck <cornelia.huck@de.ibm.com>2012-06-26 16:06:41 +0200
committerMarcelo Tosatti <mtosatti@redhat.com>2012-07-03 14:55:37 -0300
commit21b26c08535c992802402c7ba2d789ca9e1a5707 (patch)
tree97f8dad7b76e055f57503846eb470d99f2ec3300 /arch/s390
parentea1918dd3d1a8fcb7ce26816fdf31a50f7d04689 (diff)
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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: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/sigp.h1
-rw-r--r--arch/s390/kvm/sigp.c14
2 files changed, 10 insertions, 5 deletions
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h
index 7306270..5a87d16 100644
--- a/arch/s390/include/asm/sigp.h
+++ b/arch/s390/include/asm/sigp.h
@@ -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
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 97c9f36..6ed8175 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -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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