[PULL,41/54] target/riscv: read marchid/mimpid in kvm_riscv_init_machine_ids()

Commit Message

Alistair Francis July 10, 2023, 12:31 p.m. UTC

From: Daniel Henrique Barboza <[e-mail]>

Allow 'marchid' and 'mimpid' to also be initialized in
kvm_riscv_init_machine_ids().

After this change, the handling of mvendorid/marchid/mimpid for the
'host' CPU type will be equal to what we already have for TCG named
CPUs, i.e. the user is not able to set these values to a different val
than the one that is already preset.

Signed-off-by: Daniel Henrique Barboza <[e-mail]>
Reviewed-by: Andrew Jones <[e-mail]>
Acked-by: Alistair Francis <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Alistair Francis <[e-mail]>
---
 target/riscv/kvm.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Patch

diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 7402bfbfc5..d8c1423b54 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -378,6 +378,22 @@  static void kvm_riscv_init_machine_ids(RISCVCPU *cpu, KVMScratchCPU *kvmcpu)
     if (ret != 0) {
         error_report("Unable to retrieve mvendorid from host, error %d", ret);
     }
+
+    reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
+                              KVM_REG_RISCV_CONFIG_REG(marchid));
+    reg.addr = (uint64_t)&cpu->cfg.marchid;
+    ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, &reg);
+    if (ret != 0) {
+        error_report("Unable to retrieve marchid from host, error %d", ret);
+    }
+
+    reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
+                              KVM_REG_RISCV_CONFIG_REG(mimpid));
+    reg.addr = (uint64_t)&cpu->cfg.mimpid;
+    ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, &reg);
+    if (ret != 0) {
+        error_report("Unable to retrieve mimpid from host, error %d", ret);
+    }
 }
 
 void kvm_riscv_init_user_properties(Object *cpu_obj)