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[Qemu-devel] [PATCH 09/10] s390x: Migrate vector registers
From: |
Cornelia Huck |
Subject: |
[Qemu-devel] [PATCH 09/10] s390x: Migrate vector registers |
Date: |
Wed, 20 May 2015 18:33:25 +0200 |
From: Eric Farman <address@hidden>
When migrating a guest, be sure to include the vector registers.
The vector registers are defined in a subsection, similar to the
existing subsection for floating point registers. Since the
floating point registers are always present (and thus migrated),
we can skip them when performing the migration of the vector
registers which may or may not be present.
Suggested-by: David Hildenbrand <address@hidden>
Signed-off-by: Eric Farman <address@hidden>
Reviewed-by: David Hildenbrand <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
---
target-s390x/cpu.h | 14 ++++++++++++
target-s390x/machine.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 75 insertions(+)
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 031f94d..a71abae 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -1190,4 +1190,18 @@ static inline int
s390_assign_subch_ioeventfd(EventNotifier *notifier,
}
}
+#ifdef CONFIG_KVM
+static inline bool vregs_needed(void *opaque)
+{
+ if (kvm_enabled()) {
+ return kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS);
+ }
+ return 0;
+}
+#else
+static inline bool vregs_needed(void *opaque)
+{
+ return 0;
+}
+#endif
#endif
diff --git a/target-s390x/machine.c b/target-s390x/machine.c
index 1a9390b..e52d760 100644
--- a/target-s390x/machine.c
+++ b/target-s390x/machine.c
@@ -73,6 +73,64 @@ static inline bool fpu_needed(void *opaque)
return true;
}
+const VMStateDescription vmstate_vregs = {
+ .name = "cpu/vregs",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ /* vregs[0][0] -> vregs[15][0] and fregs are overlays */
+ VMSTATE_UINT64(env.vregs[16][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[17][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[18][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[19][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[20][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[21][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[22][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[23][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[24][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[25][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[26][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[27][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[28][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[29][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[30][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[31][0].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[0][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[1][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[2][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[3][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[4][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[5][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[6][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[7][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[8][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[9][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[10][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[11][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[12][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[13][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[14][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[15][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[16][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[17][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[18][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[19][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[20][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[21][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[22][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[23][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[24][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[25][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[26][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[27][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[28][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[29][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[30][1].ll, S390CPU),
+ VMSTATE_UINT64(env.vregs[31][1].ll, S390CPU),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
const VMStateDescription vmstate_s390_cpu = {
.name = "cpu",
.post_load = cpu_post_load,
@@ -106,6 +164,9 @@ const VMStateDescription vmstate_s390_cpu = {
.vmsd = &vmstate_fpu,
.needed = fpu_needed,
} , {
+ .vmsd = &vmstate_vregs,
+ .needed = vregs_needed,
+ } , {
/* empty */
}
},
--
2.4.1
- [Qemu-devel] [PATCH 00/10] s390x: SIMD support, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 01/10] s390x: Common access to floating point registers, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 07/10] linux/elf.h update, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 05/10] s390x: gdb updates for vector registers, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 02/10] s390x: Vector Register IOCTLs, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 09/10] s390x: Migrate vector registers,
Cornelia Huck <=
- [Qemu-devel] [PATCH 03/10] s390x: Store Additional Status SIGP order, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 08/10] s390x: Add vector registers to ELF dump, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 04/10] gdb-xml: Include XML for s390 vector registers, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 06/10] s390x: Add vector registers to HMP output, Cornelia Huck, 2015/05/20
- [Qemu-devel] [PATCH 10/10] s390x: Enable vector processing capability, Cornelia Huck, 2015/05/20