[PULL,52/54] target/riscv/kvm.c: add kvmconfig_get_cfg_addr() helper

Commit Message

Alistair Francis July 10, 2023, 12:32 p.m. UTC

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

There are 2 places in which we need to get a pointer to a certain
property of the cpu->cfg struct based on property offset. Next patch
will add a couple more.

Create a helper to avoid repeating this code over and over.

Signed-off-by: Daniel Henrique Barboza <[e-mail]>
Reviewed-by: Andrew Jones <[e-mail]>
Reviewed-by: Alistair Francis <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Alistair Francis <[e-mail]>
---
 target/riscv/kvm.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

Patch

diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
index 4d7476cf15..fd22ef4162 100644
--- a/target/riscv/kvm.c
+++ b/target/riscv/kvm.c
@@ -215,11 +215,15 @@  static KVMCPUConfig kvm_multi_ext_cfgs[] = {
     KVM_EXT_CFG("svpbmt", ext_svpbmt, KVM_RISCV_ISA_EXT_SVPBMT),
 };
 
+static void *kvmconfig_get_cfg_addr(RISCVCPU *cpu, KVMCPUConfig *kvmcfg)
+{
+    return (void *)&cpu->cfg + kvmcfg->offset;
+}
+
 static void kvm_cpu_cfg_set(RISCVCPU *cpu, KVMCPUConfig *multi_ext,
                             uint32_t val)
 {
-    int cpu_cfg_offset = multi_ext->offset;
-    bool *ext_enabled = (void *)&cpu->cfg + cpu_cfg_offset;
+    bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext);
 
     *ext_enabled = val;
 }
@@ -227,8 +231,7 @@  static void kvm_cpu_cfg_set(RISCVCPU *cpu, KVMCPUConfig *multi_ext,
 static uint32_t kvm_cpu_cfg_get(RISCVCPU *cpu,
                                 KVMCPUConfig *multi_ext)
 {
-    int cpu_cfg_offset = multi_ext->offset;
-    bool *ext_enabled = (void *)&cpu->cfg + cpu_cfg_offset;
+    bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext);
 
     return *ext_enabled;
 }