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From: LIU Zhiwei <zhiwei_liu@c-sky.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: palmer@dabbelt.com, bin.meng@windriver.com,
	Alistair.Francis@wdc.com, LIU Zhiwei <zhiwei_liu@c-sky.com>
Subject: [PATCH] target/riscv: Don't wrongly overide isa version
Date: Tue, 10 Aug 2021 11:33:10 +0800	[thread overview]
Message-ID: <20210810033310.7252-1-zhiwei_liu@c-sky.com> (raw)

For some cpu, the isa version has already been set in cpu init function.
Thus only overide the isa version when isa version is not set, or
users set different isa version explicitly by cpu parameters.

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
 target/riscv/cpu.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 991a6bb760..425efba0c8 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -392,9 +392,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
     RISCVCPU *cpu = RISCV_CPU(dev);
     CPURISCVState *env = &cpu->env;
     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
-    int priv_version = PRIV_VERSION_1_11_0;
-    int bext_version = BEXT_VERSION_0_93_0;
-    int vext_version = VEXT_VERSION_0_07_1;
+    int priv_version = env->priv_ver;
     target_ulong target_misa = env->misa;
     Error *local_err = NULL;
 
@@ -417,9 +415,11 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         }
     }
 
-    set_priv_version(env, priv_version);
-    set_bext_version(env, bext_version);
-    set_vext_version(env, vext_version);
+    if (!env->priv_ver) {
+        set_priv_version(env, PRIV_VERSION_1_11_0);
+    } else if (env->priv_ver != priv_version) {
+        set_priv_version(env, priv_version);
+    }
 
     if (cpu->cfg.mmu) {
         set_feature(env, RISCV_FEATURE_MMU);
@@ -497,6 +497,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
             target_misa |= RVH;
         }
         if (cpu->cfg.ext_b) {
+            int bext_version = BEXT_VERSION_0_93_0;
             target_misa |= RVB;
 
             if (cpu->cfg.bext_spec) {
@@ -515,6 +516,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
             set_bext_version(env, bext_version);
         }
         if (cpu->cfg.ext_v) {
+            int vext_version = VEXT_VERSION_0_07_1;
             target_misa |= RVV;
             if (!is_power_of_2(cpu->cfg.vlen)) {
                 error_setg(errp,
-- 
2.17.1



WARNING: multiple messages have this Message-ID (diff)
From: LIU Zhiwei <zhiwei_liu@c-sky.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: Alistair.Francis@wdc.com, palmer@dabbelt.com,
	bin.meng@windriver.com, LIU Zhiwei <zhiwei_liu@c-sky.com>
Subject: [PATCH] target/riscv: Don't wrongly overide isa version
Date: Tue, 10 Aug 2021 11:33:10 +0800	[thread overview]
Message-ID: <20210810033310.7252-1-zhiwei_liu@c-sky.com> (raw)

For some cpu, the isa version has already been set in cpu init function.
Thus only overide the isa version when isa version is not set, or
users set different isa version explicitly by cpu parameters.

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
 target/riscv/cpu.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 991a6bb760..425efba0c8 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -392,9 +392,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
     RISCVCPU *cpu = RISCV_CPU(dev);
     CPURISCVState *env = &cpu->env;
     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
-    int priv_version = PRIV_VERSION_1_11_0;
-    int bext_version = BEXT_VERSION_0_93_0;
-    int vext_version = VEXT_VERSION_0_07_1;
+    int priv_version = env->priv_ver;
     target_ulong target_misa = env->misa;
     Error *local_err = NULL;
 
@@ -417,9 +415,11 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         }
     }
 
-    set_priv_version(env, priv_version);
-    set_bext_version(env, bext_version);
-    set_vext_version(env, vext_version);
+    if (!env->priv_ver) {
+        set_priv_version(env, PRIV_VERSION_1_11_0);
+    } else if (env->priv_ver != priv_version) {
+        set_priv_version(env, priv_version);
+    }
 
     if (cpu->cfg.mmu) {
         set_feature(env, RISCV_FEATURE_MMU);
@@ -497,6 +497,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
             target_misa |= RVH;
         }
         if (cpu->cfg.ext_b) {
+            int bext_version = BEXT_VERSION_0_93_0;
             target_misa |= RVB;
 
             if (cpu->cfg.bext_spec) {
@@ -515,6 +516,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
             set_bext_version(env, bext_version);
         }
         if (cpu->cfg.ext_v) {
+            int vext_version = VEXT_VERSION_0_07_1;
             target_misa |= RVV;
             if (!is_power_of_2(cpu->cfg.vlen)) {
                 error_setg(errp,
-- 
2.17.1



             reply	other threads:[~2021-08-10  3:35 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-10  3:33 LIU Zhiwei [this message]
2021-08-10  3:33 ` [PATCH] target/riscv: Don't wrongly overide isa version LIU Zhiwei
2021-08-11  9:26 ` Bin Meng
2021-08-11  9:26   ` Bin Meng
2021-08-11 14:06   ` LIU Zhiwei
2021-08-11 14:06     ` LIU Zhiwei
2021-08-11 14:18     ` Bin Meng
2021-08-11 14:18       ` Bin Meng

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