[Stable-9.2.4 51/62] target/riscv/kvm: minor fixes/tweaks

[Michael Tokarev]

From: Daniel Henrique Barboza <dbarb...@ventanamicro.com>

Remove an unused 'KVMScratchCPU' pointer argument in
kvm_riscv_check_sbi_dbcn_support().

Put kvm_riscv_reset_regs_csr() after kvm_riscv_put_regs_csr(). This will
make a future patch diff easier to read, when changes in
kvm_riscv_reset_regs_csr() and kvm_riscv_get_regs_csr() will be made.

Fixes: a6b53378f5 ("target/riscv/kvm: implement SBI debug console (DBCN) calls")
Signed-off-by: Daniel Henrique Barboza <dbarb...@ventanamicro.com>
Reviewed-by: Andrew Jones <ajo...@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com>
Message-ID: <20250429124421.223883-2-dbarb...@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.fran...@wdc.com>
Cc: qemu-sta...@nongnu.org
(cherry picked from commit 73f81da0a3628180409a0ae90ece19534bcdf09b)
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>

diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
index c53ca1f76b..3ac9798a57 100644
--- a/target/riscv/kvm/kvm-cpu.c
+++ b/target/riscv/kvm/kvm-cpu.c
@@ -639,6 +639,19 @@ static int kvm_riscv_put_regs_csr(CPUState *cs)
     return 0;
 }
 
+static void kvm_riscv_reset_regs_csr(CPURISCVState *env)
+{
+    env->mstatus = 0;
+    env->mie = 0;
+    env->stvec = 0;
+    env->sscratch = 0;
+    env->sepc = 0;
+    env->scause = 0;
+    env->stval = 0;
+    env->mip = 0;
+    env->satp = 0;
+}
+
 static int kvm_riscv_get_regs_fp(CPUState *cs)
 {
     int ret = 0;
@@ -1057,7 +1070,6 @@ static int uint64_cmp(const void *a, const void *b)
 }
 
 static void kvm_riscv_check_sbi_dbcn_support(RISCVCPU *cpu,
-                                             KVMScratchCPU *kvmcpu,
                                              struct kvm_reg_list *reglist)
 {
     struct kvm_reg_list *reg_search;
@@ -1176,7 +1188,7 @@ static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, 
KVMScratchCPU *kvmcpu)
         kvm_riscv_read_vlenb(cpu, kvmcpu, reglist);
     }
 
-    kvm_riscv_check_sbi_dbcn_support(cpu, kvmcpu, reglist);
+    kvm_riscv_check_sbi_dbcn_support(cpu, reglist);
 }
 
 static void riscv_init_kvm_registers(Object *cpu_obj)
-- 
2.39.5