[PULL v3 06/11] s390x: Add protected dump cap

[marcandre . lureau]

From: Janosch Frank <frankja@linux.ibm.com>

Add a protected dump capability for later feature checking.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Message-Id: <20221017083822.43118-7-frankja@linux.ibm.com>
[ Marc-André - Add missing stubs when !kvm ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 target/s390x/kvm/kvm_s390x.h |  1 +
 target/s390x/kvm/kvm.c       |  7 +++++++
 target/s390x/kvm/stubs.c     | 12 ++++++++++++
 target/s390x/kvm/meson.build |  2 ++
 4 files changed, 22 insertions(+)
 create mode 100644 target/s390x/kvm/stubs.c

diff --git a/target/s390x/kvm/kvm_s390x.h b/target/s390x/kvm/kvm_s390x.h
index aaae8570de..f9785564d0 100644
--- a/target/s390x/kvm/kvm_s390x.h
+++ b/target/s390x/kvm/kvm_s390x.h
@@ -26,6 +26,7 @@ int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
 int kvm_s390_get_hpage_1m(void);
+int kvm_s390_get_protected_dump(void);
 int kvm_s390_get_ri(void);
 int kvm_s390_get_zpci_op(void);
 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 508c24cfec..04cae0b999 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -158,6 +158,7 @@ static int cap_hpage_1m;
 static int cap_vcpu_resets;
 static int cap_protected;
 static int cap_zpci_op;
+static int cap_protected_dump;
 
 static bool mem_op_storage_key_support;
 
@@ -364,6 +365,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS);
     cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED);
     cap_zpci_op = kvm_check_extension(s, KVM_CAP_S390_ZPCI_OP);
+    cap_protected_dump = kvm_check_extension(s, KVM_CAP_S390_PROTECTED_DUMP);
 
     kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
     kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
@@ -2045,6 +2047,11 @@ int kvm_s390_assign_subch_ioeventfd(EventNotifier 
*notifier, uint32_t sch,
     return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
 }
 
+int kvm_s390_get_protected_dump(void)
+{
+    return cap_protected_dump;
+}
+
 int kvm_s390_get_ri(void)
 {
     return cap_ri;
diff --git a/target/s390x/kvm/stubs.c b/target/s390x/kvm/stubs.c
new file mode 100644
index 0000000000..5fd63b9a7e
--- /dev/null
+++ b/target/s390x/kvm/stubs.c
@@ -0,0 +1,12 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+
+#include "kvm_s390x.h"
+
+int kvm_s390_get_protected_dump(void)
+{
+    return false;
+}
diff --git a/target/s390x/kvm/meson.build b/target/s390x/kvm/meson.build
index d1356356b1..aef52b6686 100644
--- a/target/s390x/kvm/meson.build
+++ b/target/s390x/kvm/meson.build
@@ -1,6 +1,8 @@
 
 s390x_ss.add(when: 'CONFIG_KVM', if_true: files(
   'kvm.c'
+), if_false: files(
+  'stubs.c'
 ))
 
 # Newer kernels on s390 check for an S390_PGSTE program header and
-- 
2.37.3