From: Max Chou <max.chou@sifive.com>
Date: Tue, 23 Sep 2025 09:07:28 +0000 (+0800)
Subject: target/riscv: rvv: Replace checking V by checking Zve32x
X-Git-Tag: v10.1.1~7
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8650b5597a9d568f0d005d4d0caf13e333c44a04;p=thirdparty%2Fqemu.git

target/riscv: rvv: Replace checking V by checking Zve32x

The Zve32x extension will be applied by the V and Zve* extensions.
Therefore we can replace the original V checking with Zve32x checking for both
the V and Zve* extensions.

Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250923090729.1887406-2-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
(cherry picked from commit ae4a37f57818e47e212272821a5a86ad54620eb8)
(Mjt: drop the MonitorDef change due to missing v10.1.0-850-ge06d209aa6 "target/riscv: implement MonitorDef HMP API")
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
---

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index d055ddf4623..a877018ab0c 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -604,7 +604,7 @@ static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
             }
         }
     }
-    if (riscv_has_ext(env, RVV) && (flags & CPU_DUMP_VPU)) {
+    if (riscv_cpu_cfg(env)->ext_zve32x && (flags & CPU_DUMP_VPU)) {
         static const int dump_rvv_csrs[] = {
                     CSR_VSTART,
                     CSR_VXSAT,
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 8842e07a735..5824928d954 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -2004,7 +2004,8 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno,
     if (riscv_has_ext(env, RVF)) {
         mask |= MSTATUS_FS;
     }
-    if (riscv_has_ext(env, RVV)) {
+
+    if (riscv_cpu_cfg(env)->ext_zve32x) {
         mask |= MSTATUS_VS;
     }
 
diff --git a/target/riscv/machine.c b/target/riscv/machine.c
index 1600ec44f0b..4d3b2136171 100644
--- a/target/riscv/machine.c
+++ b/target/riscv/machine.c
@@ -131,7 +131,8 @@ static bool vector_needed(void *opaque)
     RISCVCPU *cpu = opaque;
     CPURISCVState *env = &cpu->env;
 
-    return riscv_has_ext(env, RVV);
+    return kvm_enabled() ? riscv_has_ext(env, RVV) :
+                           riscv_cpu_cfg(env)->ext_zve32x;
 }
 
 static const VMStateDescription vmstate_vector = {
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 78fb2791847..a6f60f55ceb 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -660,7 +660,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
-    if (riscv_has_ext(env, RVV)) {
+    if (cpu->cfg.ext_zve32x) {
         riscv_cpu_validate_v(env, &cpu->cfg, &local_err);
         if (local_err != NULL) {
             error_propagate(errp, local_err);