Re: [PATCH RFC v4 03/15] target/riscv: Implement function kvm_arch_init_vcpu
On Thu, Dec 3, 2020 at 4:55 AM Yifei Jiang <jiangyifei(a)huawei.com> wrote:
Get isa info from kvm while kvm init.
Signed-off-by: Yifei Jiang <jiangyifei(a)huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1(a)huawei.com>
---
target/riscv/kvm.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 8c386d9acf..86660ba81b 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
There is a series on list (I'll send a v2 out later today) that starts
to remove these #ifdef for the RISC-V XLEN. Next time you rebase it
would be great if you can use that and hopefully remove this.
Alistair
+ return id;
+}
+
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
@@ -79,7 +91,20 @@ void kvm_arch_init_irq_routing(KVMState *s)
int kvm_arch_init_vcpu(CPUState *cs)
{
- return 0;
+ int ret = 0;
+ target_ulong isa;
+ RISCVCPU *cpu = RISCV_CPU(cs);
+ CPURISCVState *env = &cpu->env;
+ __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;
+ }
+ env->misa = isa;
+
+ return ret;
}
int kvm_arch_msi_data_to_gsi(uint32_t data)
--
2.19.1