linux_dsm_epyc7002/arch/s390/include/asm/sigp.h
Thomas Huth 58bc33b2b7 KVM: s390: SIGP START has to report BUSY while stopping a CPU
Just like the RESTART order, the START order also has to report BUSY
while a STOP request is pending, to avoid that the START might be
ignored due to a race condition between the STOP and the START order.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2013-12-11 19:05:21 +01:00

35 lines
1.0 KiB
C

#ifndef __S390_ASM_SIGP_H
#define __S390_ASM_SIGP_H
/* SIGP order codes */
#define SIGP_SENSE 1
#define SIGP_EXTERNAL_CALL 2
#define SIGP_EMERGENCY_SIGNAL 3
#define SIGP_START 4
#define SIGP_STOP 5
#define SIGP_RESTART 6
#define SIGP_STOP_AND_STORE_STATUS 9
#define SIGP_INITIAL_CPU_RESET 11
#define SIGP_SET_PREFIX 13
#define SIGP_STORE_STATUS_AT_ADDRESS 14
#define SIGP_SET_ARCHITECTURE 18
#define SIGP_COND_EMERGENCY_SIGNAL 19
#define SIGP_SENSE_RUNNING 21
/* SIGP condition codes */
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
#define SIGP_CC_STATUS_STORED 1
#define SIGP_CC_BUSY 2
#define SIGP_CC_NOT_OPERATIONAL 3
/* SIGP cpu status bits */
#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
#endif /* __S390_ASM_SIGP_H */