[PATCH RFC v2 2/9] target/riscv: Add target/riscv/kvm.c to place the public kvm interface

[Yifei Jiang <jiangyifei@huawei.com>]

Add target/riscv/kvm.c to place kvm_arch_* function needed by kvm/kvm-all.c.
Meanwhile, add kvm support in configure file.

Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com>
---
 configure                  |   1 +
 target/riscv/Makefile.objs |   1 +
 target/riscv/kvm.c         | 128 +++++++++++++++++++++++++++++++++++++
 3 files changed, 130 insertions(+)
 create mode 100644 target/riscv/kvm.c

diff --git a/configure b/configure
index 233c671aaa..7114a1c64d 100755
--- a/configure
+++ b/configure
@@ -200,6 +200,7 @@ supported_kvm_target() {
         x86_64:i386 | x86_64:x86_64 | x86_64:x32 | \
         mips:mips | mipsel:mips | \
         ppc:ppc | ppc64:ppc | ppc:ppc64 | ppc64:ppc64 | ppc64:ppc64le | \
+        riscv32:riscv32 | riscv64:riscv64 | \
         s390x:s390x)
             return 0
         ;;
diff --git a/target/riscv/Makefile.objs b/target/riscv/Makefile.objs
index ff651f69f6..7ea8f4c3da 100644
--- a/target/riscv/Makefile.objs
+++ b/target/riscv/Makefile.objs
@@ -1,5 +1,6 @@
 obj-y += translate.o op_helper.o cpu_helper.o cpu.o csr.o fpu_helper.o gdbstub.o
 obj-$(CONFIG_SOFTMMU) += pmp.o
+obj-$(CONFIG_KVM) += kvm.o
 
 ifeq ($(CONFIG_SOFTMMU),y)
 obj-y += monitor.o
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
new file mode 100644
index 0000000000..8c386d9acf
--- /dev/null
+++ b/target/riscv/kvm.c
@@ -0,0 +1,128 @@
+/*
+ * RISC-V implementation of KVM hooks
+ *
+ * Copyright (c) 2020 Huawei Technologies Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include <sys/ioctl.h>
+
+#include <linux/kvm.h>
+
+#include "qemu-common.h"
+#include "qemu/timer.h"
+#include "qemu/error-report.h"
+#include "qemu/main-loop.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
+#include "sysemu/kvm_int.h"
+#include "cpu.h"
+#include "trace.h"
+#include "hw/pci/pci.h"
+#include "exec/memattrs.h"
+#include "exec/address-spaces.h"
+#include "hw/boards.h"
+#include "hw/irq.h"
+#include "qemu/log.h"
+#include "hw/loader.h"
+
+const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
+    KVM_CAP_LAST_INFO
+};
+
+int kvm_arch_get_registers(CPUState *cs)
+{
+    return 0;
+}
+
+int kvm_arch_put_registers(CPUState *cs, int level)
+{
+    return 0;
+}
+
+int kvm_arch_release_virq_post(int virq)
+{
+    return 0;
+}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data, PCIDevice *dev)
+{
+    return 0;
+}
+
+int kvm_arch_destroy_vcpu(CPUState *cs)
+{
+    return 0;
+}
+
+unsigned long kvm_arch_vcpu_id(CPUState *cpu)
+{
+    return cpu->cpu_index;
+}
+
+void kvm_arch_init_irq_routing(KVMState *s)
+{
+}
+
+int kvm_arch_init_vcpu(CPUState *cs)
+{
+    return 0;
+}
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    abort();
+}
+
+int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
+                                int vector, PCIDevice *dev)
+{
+    return 0;
+}
+
+int kvm_arch_init(MachineState *ms, KVMState *s)
+{
+    return 0;
+}
+
+int kvm_arch_irqchip_create(KVMState *s)
+{
+    return 0;
+}
+
+int kvm_arch_process_async_events(CPUState *cs)
+{
+    return 0;
+}
+
+void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
+{
+}
+
+MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
+{
+    return MEMTXATTRS_UNSPECIFIED;
+}
+
+bool kvm_arch_stop_on_emulation_error(CPUState *cs)
+{
+    return true;
+}
+
+int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
+{
+    return 0;
+}
-- 
2.19.1