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[PATCH RFC 3/9] target/riscv: Implement function kvm_arch_init_vcpu
From: |
Yifei Jiang |
Subject: |
[PATCH RFC 3/9] target/riscv: Implement function kvm_arch_init_vcpu |
Date: |
Fri, 13 Mar 2020 11:49:43 +0800 |
Get isa info from kvm while kvm init.
Signed-off-by: Yifei Jiang <address@hidden>
Signed-off-by: Yipeng Yin <address@hidden>
---
target/riscv/kvm.c | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 8c386d9acf..3e8f8e7185 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -38,6 +38,18 @@
#include "qemu/log.h"
#include "hw/loader.h"
+static __u64 kvm_riscv_reg_id(__u64 type, __u64 idx)
+{
+ __u64 id = KVM_REG_RISCV | type | idx;
+
+#if defined(TARGET_RISCV32)
+ id |= KVM_REG_SIZE_U32;
+#elif defined(TARGET_RISCV64)
+ id |= KVM_REG_SIZE_U64;
+#endif
+ return id;
+}
+
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
@@ -79,7 +91,19 @@ void kvm_arch_init_irq_routing(KVMState *s)
int kvm_arch_init_vcpu(CPUState *cs)
{
- return 0;
+ int ret = 0;
+ uint64_t isa;
+ RISCVCPU *cpu = RISCV_CPU(cs);
+ __u64 id;
+
+ id = kvm_riscv_reg_id(KVM_REG_RISCV_CONFIG, KVM_REG_RISCV_CONFIG_REG(isa));
+ ret = kvm_get_one_reg(cs, id, &isa);
+ if (ret) {
+ return ret;
+ }
+ cpu->env.misa = isa;
+
+ return ret;
}
int kvm_arch_msi_data_to_gsi(uint32_t data)
--
2.19.1
- [PATCH RFC 0/9] Add riscv64 kvm accel support, Yifei Jiang, 2020/03/12
- [PATCH RFC 7/9] hw/riscv: PLIC update external interrupt by KVM when kvm enabled, Yifei Jiang, 2020/03/12
- [PATCH RFC 6/9] target/riscv: Support start kernel directly by KVM, Yifei Jiang, 2020/03/12
- [PATCH RFC 4/9] target/riscv: Implement kvm_arch_get_registers, Yifei Jiang, 2020/03/12
- [PATCH RFC 9/9] target/riscv: add host riscv64 cpu type, Yifei Jiang, 2020/03/12
- [PATCH RFC 1/9] linux-header: Update linux/kvm.h, Yifei Jiang, 2020/03/12
- [PATCH RFC 2/9] target/riscv: Add target/riscv/kvm.c to place the public kvm interface, Yifei Jiang, 2020/03/12