From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37855) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dtyUc-0007bJ-Dw for qemu-devel@nongnu.org; Mon, 18 Sep 2017 12:02:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dtyUW-0008ET-QC for qemu-devel@nongnu.org; Mon, 18 Sep 2017 12:01:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46182) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dtyUW-0008Dx-HE for qemu-devel@nongnu.org; Mon, 18 Sep 2017 12:01:48 -0400 From: David Hildenbrand Date: Mon, 18 Sep 2017 18:00:03 +0200 Message-Id: <20170918160012.4317-19-david@redhat.com> In-Reply-To: <20170918160012.4317-1-david@redhat.com> References: <20170918160012.4317-1-david@redhat.com> Subject: [Qemu-devel] [PATCH v1 18/27] s390x/tcg: implement SIGP SENSE RUNNING STATUS List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Richard Henderson , thuth@redhat.com, cohuck@redhat.com, david@redhat.com, borntraeger@de.ibm.com, Alexander Graf , Igor Mammedov , Aurelien Jarno , Matthew Rosato , =?UTF-8?q?Alex=20Benn=C3=A9e?= Preparation for TCG, for KVM is this is completely handled in the kernel. Signed-off-by: David Hildenbrand --- target/s390x/cpu.h | 2 ++ target/s390x/sigp.c | 25 +++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index 5d03802c7d..5aa755d7b5 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -594,6 +594,7 @@ struct sysib_322 { #define SIGP_SET_PREFIX 0x0d #define SIGP_STORE_STATUS_ADDR 0x0e #define SIGP_SET_ARCH 0x12 +#define SIGP_SENSE_RUNNING 0x15 #define SIGP_STORE_ADTL_STATUS 0x17 /* SIGP condition codes */ @@ -604,6 +605,7 @@ struct sysib_322 { /* SIGP status bits */ #define SIGP_STAT_EQUIPMENT_CHECK 0x80000000UL +#define SIGP_STAT_NOT_RUNNING 0x00000400UL #define SIGP_STAT_INCORRECT_STATE 0x00000200UL #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL #define SIGP_STAT_EXT_CALL_PENDING 0x00000080UL diff --git a/target/s390x/sigp.c b/target/s390x/sigp.c index 9587c3d319..c57312b743 100644 --- a/target/s390x/sigp.c +++ b/target/s390x/sigp.c @@ -234,6 +234,28 @@ static void sigp_set_prefix(CPUState *cs, run_on_cpu_data arg) si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; } +static void sigp_sense_running(S390CPU *dst_cpu, SigpInfo *si) +{ + if (!tcg_enabled()) { + /* handled in KVM */ + set_sigp_status(si, SIGP_STAT_INVALID_ORDER); + return; + } + + /* sensing without locks is racy, but it's the same for real hw */ + if (!s390_has_feat(S390_FEAT_SENSE_RUNNING_STATUS)) { + set_sigp_status(si, SIGP_STAT_INVALID_ORDER); + return; + } + + /* If halted (which includes also STOPPED), it is not running */ + if (CPU(dst_cpu)->halted) { + si->cc = SIGP_CC_ORDER_CODE_ACCEPTED; + } else { + set_sigp_status(si, SIGP_STAT_NOT_RUNNING); + } +} + static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order, uint64_t param, uint64_t *status_reg) { @@ -282,6 +304,9 @@ static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order, case SIGP_CPU_RESET: run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, RUN_ON_CPU_HOST_PTR(&si)); break; + case SIGP_SENSE_RUNNING: + sigp_sense_running(dst_cpu, &si); + break; default: set_sigp_status(&si, SIGP_STAT_INVALID_ORDER); } -- 2.13.5