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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2012-06-26 18:06:41 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-07-03 21:55:37 +0400 |
| commit | 21b26c08535c992802402c7ba2d789ca9e1a5707 (patch) | |
| tree | 97f8dad7b76e055f57503846eb470d99f2ec3300 /arch/s390 | |
| parent | ea1918dd3d1a8fcb7ce26816fdf31a50f7d04689 (diff) | |
| download | linux-21b26c08535c992802402c7ba2d789ca9e1a5707.tar.xz | |
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.h | 1 | ||||
| -rw-r--r-- | arch/s390/kvm/sigp.c | 14 |
2 files changed, 10 insertions, 5 deletions
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h index 7306270b5b84..5a87d16d3e7c 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 97c9f36a4533..6ed8175ca7e7 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); |