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qemu-kvm/SOURCES/kvm-s390x-cpumodel-add-Concurrent-functions-facility-sup.patch

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From 66725d6be2ad779432d3b02a0ad20a415bd37f1f Mon Sep 17 00:00:00 2001
From: Hendrik Brueckner <brueckner@linux.ibm.com>
Date: Fri, 6 Dec 2024 13:27:43 +0100
Subject: [PATCH 08/18] s390x/cpumodel: add Concurrent-functions facility
support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Thomas Huth <thuth@redhat.com>
RH-MergeRequest: 305: CPU model for new IBM Z gen17 hardware
RH-Jira: RHEL-32665
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Cédric Le Goater <clg@redhat.com>
RH-Commit: [8/16] 891c3efec3d7dbce03e01f0fcb61cca9669570eb (thuth/qemu-kvm-cs9)
The Concurrent-functions facility introduces the new instruction
Perform Functions with Concurrent Results (PFCR) with few subfunctions.
Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Message-ID: <20241206122751.189721-8-brueckner@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit c9ea365dce32bc114dacd7cfca7c478a82459b47)
---
target/s390x/cpu_features.c | 2 ++
target/s390x/cpu_features.h | 1 +
target/s390x/cpu_features_def.h.inc | 8 ++++++++
target/s390x/cpu_models.c | 5 +++++
target/s390x/gen-features.c | 13 +++++++++++++
target/s390x/kvm/kvm.c | 6 ++++++
6 files changed, 35 insertions(+)
diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c
index 385a2ff860..5f8b02f12c 100644
--- a/target/s390x/cpu_features.c
+++ b/target/s390x/cpu_features.c
@@ -93,6 +93,7 @@ void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
case S390_FEAT_TYPE_KDSA:
case S390_FEAT_TYPE_SORTL:
case S390_FEAT_TYPE_DFLTCC:
+ case S390_FEAT_TYPE_PFCR:
set_be_bit(0, data); /* query is always available */
break;
default:
@@ -263,6 +264,7 @@ static S390FeatGroupDef s390_feature_groups[] = {
FEAT_GROUP_INIT("mepochptff", MULTIPLE_EPOCH_PTFF, "PTFF enhancements introduced with Multiple-epoch facility"),
FEAT_GROUP_INIT("esort", ENH_SORT, "Enhanced-sort facility"),
FEAT_GROUP_INIT("deflate", DEFLATE_CONVERSION, "Deflate-conversion facility"),
+ FEAT_GROUP_INIT("ccf", CONCURRENT_FUNCTIONS, "Concurrent-functions facility"),
};
const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group)
diff --git a/target/s390x/cpu_features.h b/target/s390x/cpu_features.h
index 661a8cd6db..5635839d03 100644
--- a/target/s390x/cpu_features.h
+++ b/target/s390x/cpu_features.h
@@ -44,6 +44,7 @@ typedef enum {
S390_FEAT_TYPE_SORTL,
S390_FEAT_TYPE_DFLTCC,
S390_FEAT_TYPE_UV_FEAT_GUEST,
+ S390_FEAT_TYPE_PFCR,
} S390FeatType;
/* Definition of a CPU feature */
diff --git a/target/s390x/cpu_features_def.h.inc b/target/s390x/cpu_features_def.h.inc
index f96cb5a7d8..09872ab3d8 100644
--- a/target/s390x/cpu_features_def.h.inc
+++ b/target/s390x/cpu_features_def.h.inc
@@ -116,6 +116,7 @@ DEF_FEAT(BEAR_ENH, "beareh", STFL, 193, "BEAR-enhancement facility")
DEF_FEAT(RDP, "rdp", STFL, 194, "Reset-DAT-protection facility")
DEF_FEAT(PAI, "pai", STFL, 196, "Processor-Activity-Instrumentation facility")
DEF_FEAT(PAIE, "paie", STFL, 197, "Processor-Activity-Instrumentation extension-1")
+DEF_FEAT(CCF_BASE, "ccf-base", STFL, 201, "Concurrent-Functions facility")
/* Features exposed via SCLP SCCB Byte 80 - 98 (bit numbers relative to byte-80) */
DEF_FEAT(SIE_GSLS, "gsls", SCLP_CONF_CHAR, 40, "SIE: Guest-storage-limit-suppression facility")
@@ -413,3 +414,10 @@ DEF_FEAT(DEFLATE_F0, "dfltcc-f0", DFLTCC, 192, "DFLTCC format 0 parameter-block"
/* Features exposed via the UV-CALL instruction */
DEF_FEAT(UV_FEAT_AP, "appv", UV_FEAT_GUEST, 4, "AP instructions installed for secure guests")
DEF_FEAT(UV_FEAT_AP_INTR, "appvi", UV_FEAT_GUEST, 5, "AP instructions interruption support for secure guests")
+
+/* Features exposed via the PFCR instruction (concurrent-functions facility). */
+DEF_FEAT(PFCR_QAF, "pfcr-qaf", PFCR, 0, "PFCR Query-Available-Functions")
+DEF_FEAT(PFCR_CSDST, "pfcr-csdst", PFCR, 1, "PFCR Compare-and-Swap-and-Double-Store (32)")
+DEF_FEAT(PFCR_CSDSTG, "pfcr-csdstg", PFCR, 2, "PFCR Compare-and-Swap-and-Double-Store (64)")
+DEF_FEAT(PFCR_CSTST, "pfcr-cstst", PFCR, 3, "PFCR Compare-and-Swap-and-Triple-Store (32)")
+DEF_FEAT(PFCR_CSTSTG, "pfcr-cststg", PFCR, 4, "PFCR Compare-and-Swap-and-Triple-Store (64)")
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index da441b7b10..cb45911ac0 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -507,6 +507,11 @@ static void check_consistency(const S390CPUModel *model)
{ S390_FEAT_RDP, S390_FEAT_LOCAL_TLB_CLEARING },
{ S390_FEAT_UV_FEAT_AP, S390_FEAT_AP },
{ S390_FEAT_UV_FEAT_AP_INTR, S390_FEAT_UV_FEAT_AP },
+ { S390_FEAT_PFCR_QAF, S390_FEAT_CCF_BASE },
+ { S390_FEAT_PFCR_CSDST, S390_FEAT_CCF_BASE },
+ { S390_FEAT_PFCR_CSDSTG, S390_FEAT_CCF_BASE },
+ { S390_FEAT_PFCR_CSTST, S390_FEAT_CCF_BASE },
+ { S390_FEAT_PFCR_CSTSTG, S390_FEAT_CCF_BASE },
};
int i;
diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c
index 302b653214..6d00ffcda7 100644
--- a/target/s390x/gen-features.c
+++ b/target/s390x/gen-features.c
@@ -308,6 +308,14 @@
S390_FEAT_DEFLATE_XPND, \
S390_FEAT_DEFLATE_F0
+#define S390_FEAT_GROUP_CONCURRENT_FUNCTIONS \
+ S390_FEAT_CCF_BASE, \
+ S390_FEAT_PFCR_QAF, \
+ S390_FEAT_PFCR_CSDST, \
+ S390_FEAT_PFCR_CSDSTG, \
+ S390_FEAT_PFCR_CSTST, \
+ S390_FEAT_PFCR_CSTSTG
+
/* cpu feature groups */
static uint16_t group_PLO[] = {
S390_FEAT_GROUP_PLO,
@@ -398,6 +406,10 @@ static uint16_t group_DEFLATE_CONVERSION[] = {
S390_FEAT_GROUP_DEFLATE_CONVERSION,
};
+static uint16_t group_CONCURRENT_FUNCTIONS[] = {
+ S390_FEAT_GROUP_CONCURRENT_FUNCTIONS,
+};
+
/* Base features (in order of release)
* Only non-hypervisor managed features belong here.
* Base feature sets are static meaning they do not change in future QEMU
@@ -948,6 +960,7 @@ static FeatGroupDefSpec FeatGroupDef[] = {
FEAT_GROUP_INITIALIZER(MULTIPLE_EPOCH_PTFF),
FEAT_GROUP_INITIALIZER(ENH_SORT),
FEAT_GROUP_INITIALIZER(DEFLATE_CONVERSION),
+ FEAT_GROUP_INITIALIZER(CONCURRENT_FUNCTIONS),
};
#define QEMU_FEAT_INITIALIZER(_name) \
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 8ffe0159d8..dd0322c43a 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -2195,6 +2195,9 @@ static int query_cpu_subfunc(S390FeatBitmap features)
if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
}
+ if (test_bit(S390_FEAT_CCF_BASE, features)) {
+ s390_add_from_feat_block(features, S390_FEAT_TYPE_PFCR, prop.pfcr);
+ }
return 0;
}
@@ -2248,6 +2251,9 @@ static int configure_cpu_subfunc(const S390FeatBitmap features)
if (test_bit(S390_FEAT_DEFLATE_BASE, features)) {
s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc);
}
+ if (test_bit(S390_FEAT_CCF_BASE, features)) {
+ s390_fill_feat_block(features, S390_FEAT_TYPE_PFCR, prop.pfcr);
+ }
return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
}
--
2.39.3
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