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From: Cornelia Huck <cornelia.huck@de.ibm.com>
To: peter.maydell@linaro.org
Cc: borntraeger@de.ibm.com, agraf@suse.de, jfrei@linux.vnet.ibm.com,
	qemu-devel@nongnu.org,
	David Hildenbrand <dahi@linux.vnet.ibm.com>,
	Cornelia Huck <cornelia.huck@de.ibm.com>
Subject: [Qemu-devel] [PULL 25/38] s390x/sclp: propagate the ibc val (lowest and unblocked ibc)
Date: Tue,  6 Sep 2016 09:46:57 +0200	[thread overview]
Message-ID: <20160906074710.13495-26-cornelia.huck@de.ibm.com> (raw)
In-Reply-To: <20160906074710.13495-1-cornelia.huck@de.ibm.com>

From: David Hildenbrand <dahi@linux.vnet.ibm.com>

If we have a lowest ibc, we can indicate the ibc to the guest.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <20160905085244.99980-17-dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 hw/s390x/sclp.c           |  2 ++
 include/hw/s390x/sclp.h   |  3 ++-
 target-s390x/cpu_models.c | 21 +++++++++++++++++++++
 target-s390x/cpu_models.h | 12 ++++++++++++
 4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 844cdb9..e24b716 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -67,6 +67,8 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
     read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
     read_info->highest_cpu = cpu_to_be16(max_cpus);
 
+    read_info->ibc_val = cpu_to_be32(s390_get_ibc_val());
+
     /* Configuration Characteristic (Extension) */
     s390_get_feat_block(S390_FEAT_TYPE_SCLP_CONF_CHAR,
                          read_info->conf_char);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index 30a40ea..664be9b 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -121,7 +121,8 @@ typedef struct ReadInfo {
     uint8_t  loadparm[8];               /* 24-31 */
     uint8_t  _reserved3[48 - 32];       /* 32-47 */
     uint64_t facilities;                /* 48-55 */
-    uint8_t  _reserved0[80 - 56];       /* 56-79 */
+    uint8_t  _reserved0[76 - 56];       /* 56-75 */
+    uint32_t ibc_val;
     uint8_t  conf_char[96 - 80];        /* 80-95 */
     uint8_t  _reserved4[100 - 96];      /* 96-99 */
     uint32_t rnsize2;
diff --git a/target-s390x/cpu_models.c b/target-s390x/cpu_models.c
index 4ebf33e..4331d74 100644
--- a/target-s390x/cpu_models.c
+++ b/target-s390x/cpu_models.c
@@ -74,6 +74,27 @@ static S390CPUDef s390_cpu_defs[] = {
     CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
 };
 
+uint32_t s390_get_ibc_val(void)
+{
+    uint16_t unblocked_ibc, lowest_ibc;
+    static S390CPU *cpu;
+
+    if (!cpu) {
+        cpu = S390_CPU(qemu_get_cpu(0));
+    }
+
+    if (!cpu || !cpu->model) {
+        return 0;
+    }
+    unblocked_ibc = s390_ibc_from_cpu_model(cpu->model);
+    lowest_ibc = cpu->model->lowest_ibc;
+    /* the lowest_ibc always has to be <= unblocked_ibc */
+    if (!lowest_ibc || lowest_ibc > unblocked_ibc) {
+        return 0;
+    }
+    return ((uint32_t) lowest_ibc << 16) | unblocked_ibc;
+}
+
 void s390_get_feat_block(S390FeatType type, uint8_t *data)
 {
     static S390CPU *cpu;
diff --git a/target-s390x/cpu_models.h b/target-s390x/cpu_models.h
index b80883c..5e870ec 100644
--- a/target-s390x/cpu_models.h
+++ b/target-s390x/cpu_models.h
@@ -49,6 +49,18 @@ typedef struct S390CPUModel {
     uint8_t cpu_ver;        /* CPU version, usually "ff" for kvm */
 } S390CPUModel;
 
+#define S390_GEN_Z10 0xa
+
+uint32_t s390_get_ibc_val(void);
+static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel *model)
+{
+    uint16_t ibc = 0;
+
+    if (model->def->gen >= S390_GEN_Z10) {
+        ibc = ((model->def->gen - S390_GEN_Z10) << 4) + model->def->ec_ga;
+    }
+    return ibc;
+}
 void s390_get_feat_block(S390FeatType type, uint8_t *data);
 bool s390_has_feat(S390Feat feat);
 
-- 
2.9.3

  parent reply	other threads:[~2016-09-06  7:47 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-06  7:46 [Qemu-devel] [PULL 00/38] First set of s390x patches for 2.8 Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 01/38] s390x: add compat machine " Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 02/38] s390x/pci: return directly if create zpci failed Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 03/38] s390x/pci: assert zpci always existing Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 04/38] s390/sclp: cache the sclp device Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 05/38] s390x: wrap flic savevm calls into vmstate Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 06/38] s390x/ioinst: advertise fcs facility Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 07/38] s390x/css: handle cssid 255 correctly Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 08/38] linux-headers: update Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 09/38] s390x/kvm: 2 byte software breakpoint support Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 10/38] qmp: details about CPU definitions in query-cpu-definitions Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 11/38] s390x/cpumodel: "host" and "qemu" as CPU subclasses Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 12/38] s390x/cpumodel: expose CPU class properties Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 13/38] s390x/cpumodel: introduce CPU features Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 14/38] s390x/cpumodel: generate CPU feature lists for CPU models Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 15/38] s390x/cpumodel: generate CPU feature group lists Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 16/38] s390x/cpumodel: introduce CPU feature group definitions Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 17/38] s390x/cpumodel: register defined CPU models as subclasses Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 18/38] s390x/cpumodel: store the CPU model in the CPU instance Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 19/38] s390x/cpumodel: expose features and feature groups as properties Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 20/38] s390x/cpumodel: let the CPU model handle feature checks Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 21/38] s390x/cpumodel: check and apply the CPU model Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 22/38] s390x/sclp: factor out preparation of cpu entries Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 23/38] s390x/sclp: introduce sclp feature blocks Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 24/38] s390x/sclp: indicate sclp features Cornelia Huck
2016-09-06  7:46 ` Cornelia Huck [this message]
2016-09-06  7:46 ` [Qemu-devel] [PULL 26/38] s390x/sclp: propagate the mha via sclp Cornelia Huck
2016-09-06  7:46 ` [Qemu-devel] [PULL 27/38] s390x/sclp: propagate hmfai Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 28/38] s390x/kvm: allow runtime-instrumentation for "none" machine Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 29/38] s390x/kvm: implement CPU model support Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 30/38] s390x/kvm: disable host model for problematic compat machines Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 31/38] s390x/kvm: let the CPU model control CMM(A) Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 32/38] s390x/kvm: don't enable key wrapping if msa3 is disabled Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 33/38] qmp: add QMP interface "query-cpu-model-expansion" Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 34/38] qmp: add QMP interface "query-cpu-model-comparison" Cornelia Huck
2016-09-08 14:12   ` Eric Blake
2016-09-09  7:39     ` Christian Borntraeger
2016-09-06  7:47 ` [Qemu-devel] [PULL 35/38] qmp: add QMP interface "query-cpu-model-baseline" Cornelia Huck
2016-09-08 14:15   ` Eric Blake
2016-09-06  7:47 ` [Qemu-devel] [PULL 36/38] s390x/cpumodel: implement QMP interface "query-cpu-model-expansion" Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 37/38] s390x/cpumodel: implement QMP interface "query-cpu-model-comparison" Cornelia Huck
2016-09-06  7:47 ` [Qemu-devel] [PULL 38/38] s390x/cpumodel: implement QMP interface "query-cpu-model-baseline" Cornelia Huck
2016-09-06  8:48 ` [Qemu-devel] [PULL 00/38] First set of s390x patches for 2.8 no-reply
2016-09-06 14:32 ` Peter Maydell
2016-09-06 14:49   ` Cornelia Huck
2016-09-06 15:04     ` Cornelia Huck

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