[RFC PATCH v3 0/3] Add Zvqdotq support

[RFC PATCH v3 0/3] Add Zvqdotq support

[Max Chou]

This patch series adds Zvqdotq support.

The isa spec of Zvqdotq extension is not ratified yet, so this patch series
is based on the latest draft of the spec (v0.0.2) and make the Zvqdotq
extension as an experimental extension.

The draft of the Zvqdotq isa spec:
https://github.com/riscv/riscv-dot-product

v3:
* Fix casting and simplify vs1/vs2 access (Thanks for Richard Henderson's
  suggestion)

v2:
* Remove unnecessary variable and mask (Thanks for Richard Henderson's
  suggestion)

Max Chou (3):
  target/riscv: Add Zvqdotq cfg property
  target/riscv: rvv: Add Zvqdotq support
  target/riscv: Expose Zvqdotq extension as a cpu property

 target/riscv/cpu.c                            |  2 +
 target/riscv/cpu_cfg_fields.h.inc             |  1 +
 target/riscv/helper.h                         | 10 +++
 target/riscv/insn32.decode                    |  9 +++
 target/riscv/insn_trans/trans_rvzvqdotq.c.inc | 61 +++++++++++++++++++
 target/riscv/tcg/tcg-cpu.c                    |  5 ++
 target/riscv/translate.c                      |  1 +
 target/riscv/vector_helper.c                  | 57 +++++++++++++++++
 8 files changed, 146 insertions(+)
 create mode 100644 target/riscv/insn_trans/trans_rvzvqdotq.c.inc

--
2.39.3

[RFC PATCH v3 1/3] target/riscv: Add Zvqdotq cfg property

[Max Chou]

The Zvqdotq extension is the vector dot-product extension of RISC-V.

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/cpu.c                | 1 +
 target/riscv/cpu_cfg_fields.h.inc | 1 +
 target/riscv/tcg/tcg-cpu.c        | 5 +++++
 3 files changed, 7 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index d055ddf462..95edd02e68 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -187,6 +187,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zvksg, PRIV_VERSION_1_12_0, ext_zvksg),
     ISA_EXT_DATA_ENTRY(zvksh, PRIV_VERSION_1_12_0, ext_zvksh),
     ISA_EXT_DATA_ENTRY(zvkt, PRIV_VERSION_1_12_0, ext_zvkt),
+    ISA_EXT_DATA_ENTRY(zvqdotq, PRIV_VERSION_1_12_0, ext_zvqdotq),
     ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
     ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
     ISA_EXT_DATA_ENTRY(sdtrig, PRIV_VERSION_1_12_0, debug),
diff --git a/target/riscv/cpu_cfg_fields.h.inc b/target/riscv/cpu_cfg_fields.h.inc
index e2d116f0df..5da59c22d6 100644
--- a/target/riscv/cpu_cfg_fields.h.inc
+++ b/target/riscv/cpu_cfg_fields.h.inc
@@ -100,6 +100,7 @@ BOOL_FIELD(ext_zvfbfmin)
 BOOL_FIELD(ext_zvfbfwma)
 BOOL_FIELD(ext_zvfh)
 BOOL_FIELD(ext_zvfhmin)
+BOOL_FIELD(ext_zvqdotq)
 BOOL_FIELD(ext_smaia)
 BOOL_FIELD(ext_ssaia)
 BOOL_FIELD(ext_smctr)
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 78fb279184..7015370ab0 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -767,6 +767,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
+    if (cpu->cfg.ext_zvqdotq && !cpu->cfg.ext_zve32x) {
+        error_setg(errp, "Zvqdotq extension requires V or Zve* extensions");
+        return;
+    }
+
     if ((cpu->cfg.ext_zvbc || cpu->cfg.ext_zvknhb) && !cpu->cfg.ext_zve64x) {
         error_setg(
             errp,
-- 
2.39.3

Re: [RFC PATCH v3 1/3] target/riscv: Add Zvqdotq cfg property

[Daniel Henrique Barboza]

On 9/3/25 11:03 AM, Max Chou wrote:
> The Zvqdotq extension is the vector dot-product extension of RISC-V.
> 
> Signed-off-by: Max Chou <max.chou@sifive.com>
> ---
>   target/riscv/cpu.c                | 1 +
>   target/riscv/cpu_cfg_fields.h.inc | 1 +
>   target/riscv/tcg/tcg-cpu.c        | 5 +++++
>   3 files changed, 7 insertions(+)
> 
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index d055ddf462..95edd02e68 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -187,6 +187,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
>       ISA_EXT_DATA_ENTRY(zvksg, PRIV_VERSION_1_12_0, ext_zvksg),
>       ISA_EXT_DATA_ENTRY(zvksh, PRIV_VERSION_1_12_0, ext_zvksh),
>       ISA_EXT_DATA_ENTRY(zvkt, PRIV_VERSION_1_12_0, ext_zvkt),
> +    ISA_EXT_DATA_ENTRY(zvqdotq, PRIV_VERSION_1_12_0, ext_zvqdotq),

Is this really 1.12? If it's marked as experimental I would expect it be a new
extension, e.g. 1.13.


Thanks,

Daniel

>       ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
>       ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
>       ISA_EXT_DATA_ENTRY(sdtrig, PRIV_VERSION_1_12_0, debug),
> diff --git a/target/riscv/cpu_cfg_fields.h.inc b/target/riscv/cpu_cfg_fields.h.inc
> index e2d116f0df..5da59c22d6 100644
> --- a/target/riscv/cpu_cfg_fields.h.inc
> +++ b/target/riscv/cpu_cfg_fields.h.inc
> @@ -100,6 +100,7 @@ BOOL_FIELD(ext_zvfbfmin)
>   BOOL_FIELD(ext_zvfbfwma)
>   BOOL_FIELD(ext_zvfh)
>   BOOL_FIELD(ext_zvfhmin)
> +BOOL_FIELD(ext_zvqdotq)
>   BOOL_FIELD(ext_smaia)
>   BOOL_FIELD(ext_ssaia)
>   BOOL_FIELD(ext_smctr)
> diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
> index 78fb279184..7015370ab0 100644
> --- a/target/riscv/tcg/tcg-cpu.c
> +++ b/target/riscv/tcg/tcg-cpu.c
> @@ -767,6 +767,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
>           return;
>       }
>   
> +    if (cpu->cfg.ext_zvqdotq && !cpu->cfg.ext_zve32x) {
> +        error_setg(errp, "Zvqdotq extension requires V or Zve* extensions");
> +        return;
> +    }
> +
>       if ((cpu->cfg.ext_zvbc || cpu->cfg.ext_zvknhb) && !cpu->cfg.ext_zve64x) {
>           error_setg(
>               errp,

Re: [RFC PATCH v3 1/3] target/riscv: Add Zvqdotq cfg property

[Max Chou]

[-- Attachment #1: Type: text/plain, Size: 1205 bytes --]

On Thu, Sep 4, 2025 at 7:14 PM Daniel Henrique Barboza <
dbarboza@ventanamicro.com> wrote:

>
>
> On 9/3/25 11:03 AM, Max Chou wrote:
> > The Zvqdotq extension is the vector dot-product extension of RISC-V.
> >
> > Signed-off-by: Max Chou <max.chou@sifive.com>
> > ---
> >   target/riscv/cpu.c                | 1 +
> >   target/riscv/cpu_cfg_fields.h.inc | 1 +
> >   target/riscv/tcg/tcg-cpu.c        | 5 +++++
> >   3 files changed, 7 insertions(+)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index d055ddf462..95edd02e68 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -187,6 +187,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
> >       ISA_EXT_DATA_ENTRY(zvksg, PRIV_VERSION_1_12_0, ext_zvksg),
> >       ISA_EXT_DATA_ENTRY(zvksh, PRIV_VERSION_1_12_0, ext_zvksh),
> >       ISA_EXT_DATA_ENTRY(zvkt, PRIV_VERSION_1_12_0, ext_zvkt),
> > +    ISA_EXT_DATA_ENTRY(zvqdotq, PRIV_VERSION_1_12_0, ext_zvqdotq),
>
> Is this really 1.12? If it's marked as experimental I would expect it be a
> new
> extension, e.g. 1.13.
>
>
> Thanks,
>
> Daniel
>

Thanks for pointing out this part. I’ll update v4 for this.

Thanks,
Max

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[RFC PATCH v3 2/3] target/riscv: rvv: Add Zvqdotq support

[Max Chou]

Support instructions for vector dot-product extension (Zvqdotq)
- vqdot.[vv,vx]
- vqdotu.[vv,vx]
- vqdotsu.[vv,vx]
- vqdotus.vx

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/helper.h                         | 10 +++
 target/riscv/insn32.decode                    |  9 +++
 target/riscv/insn_trans/trans_rvzvqdotq.c.inc | 61 +++++++++++++++++++
 target/riscv/translate.c                      |  1 +
 target/riscv/vector_helper.c                  | 57 +++++++++++++++++
 5 files changed, 138 insertions(+)
 create mode 100644 target/riscv/insn_trans/trans_rvzvqdotq.c.inc

diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index f712b1c368..80274f1dad 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -1284,3 +1284,13 @@ DEF_HELPER_4(vgmul_vv, void, ptr, ptr, env, i32)
 DEF_HELPER_5(vsm4k_vi, void, ptr, ptr, i32, env, i32)
 DEF_HELPER_4(vsm4r_vv, void, ptr, ptr, env, i32)
 DEF_HELPER_4(vsm4r_vs, void, ptr, ptr, env, i32)
+
+/* Vector dot-product functions */
+DEF_HELPER_6(vqdot_vv, void, ptr, ptr, ptr, ptr, env, i32)
+DEF_HELPER_6(vqdotu_vv, void, ptr, ptr, ptr, ptr, env, i32)
+DEF_HELPER_6(vqdotsu_vv, void, ptr, ptr, ptr, ptr, env, i32)
+
+DEF_HELPER_6(vqdot_vx, void, ptr, ptr, tl, ptr, env, i32)
+DEF_HELPER_6(vqdotu_vx, void, ptr, ptr, tl, ptr, env, i32)
+DEF_HELPER_6(vqdotsu_vx, void, ptr, ptr, tl, ptr, env, i32)
+DEF_HELPER_6(vqdotus_vx, void, ptr, ptr, tl, ptr, env, i32)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index cd23b1f3a9..50a6156667 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -1066,3 +1066,12 @@ amominu_h  11000 . . ..... ..... 001 ..... 0101111 @atom_st
 amomaxu_h  11100 . . ..... ..... 001 ..... 0101111 @atom_st
 amocas_b    00101 . . ..... ..... 000 ..... 0101111 @atom_st
 amocas_h    00101 . . ..... ..... 001 ..... 0101111 @atom_st
+
+# *** Zvqdotq Vector Dot-Product Extension ***
+vqdot_vv    101100 . ..... ..... 010 ..... 1010111 @r_vm
+vqdot_vx    101100 . ..... ..... 110 ..... 1010111 @r_vm
+vqdotu_vv   101000 . ..... ..... 010 ..... 1010111 @r_vm
+vqdotu_vx   101000 . ..... ..... 110 ..... 1010111 @r_vm
+vqdotsu_vv  101010 . ..... ..... 010 ..... 1010111 @r_vm
+vqdotsu_vx  101010 . ..... ..... 110 ..... 1010111 @r_vm
+vqdotus_vx  101110 . ..... ..... 110 ..... 1010111 @r_vm
diff --git a/target/riscv/insn_trans/trans_rvzvqdotq.c.inc b/target/riscv/insn_trans/trans_rvzvqdotq.c.inc
new file mode 100644
index 0000000000..80134874e9
--- /dev/null
+++ b/target/riscv/insn_trans/trans_rvzvqdotq.c.inc
@@ -0,0 +1,61 @@
+/*
+ * RISC-V translation routines for the Zvqdotq vector dot-product extension
+ *
+ * Copyright (C) 2025 SiFive, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+static bool vext_zvqdotq_base_check(DisasContext *s)
+{
+    return s->cfg_ptr->ext_zvqdotq && s->sew == MO_32;
+}
+
+static bool vext_vqdotq_opivv_check(DisasContext *s, arg_rmrr *a)
+{
+    return vext_zvqdotq_base_check(s) && opivv_check(s, a);
+}
+
+#define GEN_VQDOTQ_OPIVV_TRANS(NAME, CHECK)              \
+static bool trans_##NAME(DisasContext *s, arg_rmrr *a)   \
+{                                                        \
+    if (CHECK(s, a)) {                                   \
+        return opivv_trans(a->rd, a->rs1, a->rs2, a->vm, \
+                           gen_helper_##NAME, s);        \
+    }                                                    \
+    return false;                                        \
+}
+
+GEN_VQDOTQ_OPIVV_TRANS(vqdot_vv, vext_vqdotq_opivv_check)
+GEN_VQDOTQ_OPIVV_TRANS(vqdotu_vv, vext_vqdotq_opivv_check)
+GEN_VQDOTQ_OPIVV_TRANS(vqdotsu_vv, vext_vqdotq_opivv_check)
+
+static bool vext_vqdotq_opivx_check(DisasContext *s, arg_rmrr *a)
+{
+    return vext_zvqdotq_base_check(s) && opivx_check(s, a);
+}
+
+#define GEN_VQDOTQ_OPIVX_TRANS(NAME, CHECK)              \
+static bool trans_##NAME(DisasContext *s, arg_rmrr *a)   \
+{                                                        \
+    if (CHECK(s, a)) {                                   \
+        return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, \
+                           gen_helper_##NAME, s);        \
+    }                                                    \
+    return false;                                        \
+}
+
+GEN_VQDOTQ_OPIVX_TRANS(vqdot_vx, vext_vqdotq_opivx_check)
+GEN_VQDOTQ_OPIVX_TRANS(vqdotu_vx, vext_vqdotq_opivx_check)
+GEN_VQDOTQ_OPIVX_TRANS(vqdotsu_vx, vext_vqdotq_opivx_check)
+GEN_VQDOTQ_OPIVX_TRANS(vqdotus_vx, vext_vqdotq_opivx_check)
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 9ddef2d6e2..6f43ed1ffd 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -1190,6 +1190,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 #include "insn_trans/trans_rvzfh.c.inc"
 #include "insn_trans/trans_rvk.c.inc"
 #include "insn_trans/trans_rvvk.c.inc"
+#include "insn_trans/trans_rvzvqdotq.c.inc"
 #include "insn_trans/trans_privileged.c.inc"
 #include "insn_trans/trans_svinval.c.inc"
 #include "insn_trans/trans_rvbf16.c.inc"
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 7c67d67a13..9d32fe0acc 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -921,6 +921,10 @@ GEN_VEXT_ST_WHOLE(vs8r_v, int8_t, ste_b_tlb, ste_b_host)
 #define WOP_SSU_B int16_t, int8_t, uint8_t, int16_t, uint16_t
 #define WOP_SSU_H int32_t, int16_t, uint16_t, int32_t, uint32_t
 #define WOP_SSU_W int64_t, int32_t, uint32_t, int64_t, uint64_t
+#define QOP_SSS_B int32_t, int8_t, int8_t, int32_t, int32_t
+#define QOP_SUS_B int32_t, uint8_t, int8_t, uint32_t, int32_t
+#define QOP_SSU_B int32_t, int8_t, uint8_t, int32_t, uint32_t
+#define QOP_UUU_B uint32_t, uint8_t, uint8_t, uint32_t, uint32_t
 #define NOP_SSS_B int8_t, int8_t, int16_t, int8_t, int16_t
 #define NOP_SSS_H int16_t, int16_t, int32_t, int16_t, int32_t
 #define NOP_SSS_W int32_t, int32_t, int64_t, int32_t, int64_t
@@ -5473,3 +5477,56 @@ GEN_VEXT_INT_EXT(vsext_vf2_d, int64_t, int32_t, H8, H4)
 GEN_VEXT_INT_EXT(vsext_vf4_w, int32_t, int8_t,  H4, H1)
 GEN_VEXT_INT_EXT(vsext_vf4_d, int64_t, int16_t, H8, H2)
 GEN_VEXT_INT_EXT(vsext_vf8_d, int64_t, int8_t,  H8, H1)
+
+
+/* Vector dot-product instructions. */
+
+#define OPMVV_VQDOTQ(NAME, TD, T1, T2, TX1, TX2, HD, HS1, HS2)          \
+static void do_##NAME(void *vd, void *vs1, void *vs2, int i)            \
+{                                                                       \
+    int idx;                                                            \
+    TX1 *r1_buf = (TX1 *)vs1 + HD(i);                                   \
+    TX2 *r2_buf = (TX2 *)vs2 + HD(i);                                   \
+    TD acc = ((TD *)vd)[HD(i)];                                         \
+                                                                        \
+    for (idx = 0; idx < 4; ++idx) {                                     \
+        T1 r1 = ((T1 *)r1_buf)[HS1(idx)];                               \
+        T2 r2 = ((T2 *)r2_buf)[HS2(idx)];                               \
+        acc += (TD)r1 * (TD)r2;                                         \
+    }                                                                   \
+    ((TD *)vd)[HD(i)] = acc;                                            \
+}
+
+RVVCALL(OPMVV_VQDOTQ, vqdot_vv, QOP_SSS_B, H4, H1, H1)
+RVVCALL(OPMVV_VQDOTQ, vqdotu_vv, QOP_UUU_B, H4, H1, H1)
+RVVCALL(OPMVV_VQDOTQ, vqdotsu_vv, QOP_SUS_B, H4, H1, H1)
+
+GEN_VEXT_VV(vqdot_vv, 4)
+GEN_VEXT_VV(vqdotu_vv, 4)
+GEN_VEXT_VV(vqdotsu_vv, 4)
+
+#define OPMVX_VQDOTQ(NAME, TD, T1, T2, TX1, TX2, HD, HS1, HS2)          \
+static void do_##NAME(void *vd, target_long s1, void *vs2, int i)       \
+{                                                                       \
+    int idx;                                                            \
+    TX1 *r1_buf = (TX1 *)&s1;                                           \
+    TX2 *r2_buf = (TX2 *)vs2 + HD(i);                                   \
+    TD acc = ((TD *)vd)[HD(i)];                                         \
+                                                                        \
+    for (idx = 0; idx < 4; ++idx) {                                     \
+        T1 r1 = ((T1 *)r1_buf)[HS1(idx)];                               \
+        T2 r2 = ((T2 *)r2_buf)[HS2(idx)];                               \
+        acc += (TD)r1 * (TD)r2;                                         \
+    }                                                                   \
+    ((TD *)vd)[HD(i)] = acc;                                            \
+}
+
+RVVCALL(OPMVX_VQDOTQ, vqdot_vx, QOP_SSS_B, H4, H1, H1)
+RVVCALL(OPMVX_VQDOTQ, vqdotu_vx, QOP_UUU_B, H4, H1, H1)
+RVVCALL(OPMVX_VQDOTQ, vqdotsu_vx, QOP_SUS_B, H4, H1, H1)
+RVVCALL(OPMVX_VQDOTQ, vqdotus_vx, QOP_SSU_B, H4, H1, H1)
+
+GEN_VEXT_VX(vqdot_vx, 4)
+GEN_VEXT_VX(vqdotu_vx, 4)
+GEN_VEXT_VX(vqdotsu_vx, 4)
+GEN_VEXT_VX(vqdotus_vx, 4)
-- 
2.39.3

Re: [RFC PATCH v3 2/3] target/riscv: rvv: Add Zvqdotq support

[Richard Henderson]

On 9/3/25 16:03, Max Chou wrote:
> Support instructions for vector dot-product extension (Zvqdotq)
> - vqdot.[vv,vx]
> - vqdotu.[vv,vx]
> - vqdotsu.[vv,vx]
> - vqdotus.vx
> 
> Signed-off-by: Max Chou<max.chou@sifive.com>
> ---
>   target/riscv/helper.h                         | 10 +++
>   target/riscv/insn32.decode                    |  9 +++
>   target/riscv/insn_trans/trans_rvzvqdotq.c.inc | 61 +++++++++++++++++++
>   target/riscv/translate.c                      |  1 +
>   target/riscv/vector_helper.c                  | 57 +++++++++++++++++
>   5 files changed, 138 insertions(+)
>   create mode 100644 target/riscv/insn_trans/trans_rvzvqdotq.c.inc

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

[RFC PATCH v3 3/3] target/riscv: Expose Zvqdotq extension as a cpu property

[Max Chou]

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/cpu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 95edd02e68..ed486113ba 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -1373,6 +1373,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
 /* These are experimental so mark with 'x-' */
 const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
     MULTI_EXT_CFG_BOOL("x-svukte", ext_svukte, false),
+    MULTI_EXT_CFG_BOOL("x-zvqdotq", ext_zvqdotq, false),
 
     { },
 };
-- 
2.39.3

Re: [RFC PATCH v3 3/3] target/riscv: Expose Zvqdotq extension as a cpu property

[Daniel Henrique Barboza]

On 9/3/25 11:03 AM, Max Chou wrote:
> Signed-off-by: Max Chou <max.chou@sifive.com>
> ---

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

>   target/riscv/cpu.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 95edd02e68..ed486113ba 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -1373,6 +1373,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
>   /* These are experimental so mark with 'x-' */
>   const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
>       MULTI_EXT_CFG_BOOL("x-svukte", ext_svukte, false),
> +    MULTI_EXT_CFG_BOOL("x-zvqdotq", ext_zvqdotq, false),
>   
>       { },
>   };