From: Alistair Francis <alistair23@gmail.com>
To: Max Chou <max.chou@sifive.com>
Cc: qemu-devel@nongnu.org, qemu-riscv@nongnu.org,
Palmer Dabbelt <palmer@dabbelt.com>,
Alistair Francis <alistair.francis@wdc.com>,
Weiwei Li <liwei1518@gmail.com>,
Daniel Henrique Barboza <daniel.barboza@oss.qualcomm.com>,
Liu Zhiwei <zhiwei_liu@linux.alibaba.com>,
Chao Liu <chao.liu.zevorn@gmail.com>,
Daniel Henrique Barboza <dbarboza@ventanamicro.com>,
Nutty Liu <nutty.liu@hotmail.com>
Subject: Re: [PATCH v5 2/9] target/riscv: Add the Zvfbfa extension implied rule
Date: Mon, 9 Mar 2026 14:45:16 +1000 [thread overview]
Message-ID: <CAKmqyKO+irF5qSvyF_7ScFBAxSAJ-m1t-+FRkRDpaPc7exAAMQ@mail.gmail.com> (raw)
In-Reply-To: <20260306071105.3328365-3-max.chou@sifive.com>
On Fri, Mar 6, 2026 at 5:13 PM Max Chou <max.chou@sifive.com> wrote:
>
> According to the Zvfbfa isa spec:
> The Zvfbfa extension requires the Zve32f and Zfbfmin extensions.
>
> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
> Reviewed-by: Chao Liu <chao.liu.zevorn@gmail.com>
> Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> target/riscv/cpu.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 2ddc26c837..376517755e 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -2619,6 +2619,15 @@ static RISCVCPUImpliedExtsRule SSCTR_IMPLIED = {
> },
> };
>
> +static RISCVCPUImpliedExtsRule ZVFBFA_IMPLIED = {
> + .ext = CPU_CFG_OFFSET(ext_zvfbfa),
> + .implied_multi_exts = {
> + CPU_CFG_OFFSET(ext_zve32f), CPU_CFG_OFFSET(ext_zfbfmin),
> +
> + RISCV_IMPLIED_EXTS_RULE_END
> + },
> +};
> +
> RISCVCPUImpliedExtsRule *riscv_misa_ext_implied_rules[] = {
> &RVA_IMPLIED, &RVD_IMPLIED, &RVF_IMPLIED,
> &RVM_IMPLIED, &RVV_IMPLIED, NULL
> @@ -2632,8 +2641,8 @@ RISCVCPUImpliedExtsRule *riscv_multi_ext_implied_rules[] = {
> &ZHINX_IMPLIED, &ZHINXMIN_IMPLIED, &ZICNTR_IMPLIED,
> &ZIHPM_IMPLIED, &ZK_IMPLIED, &ZKN_IMPLIED,
> &ZKS_IMPLIED, &ZVBB_IMPLIED, &ZVE32F_IMPLIED,
> - &ZVE32X_IMPLIED, &ZVE64D_IMPLIED, &ZVE64F_IMPLIED,
> - &ZVE64X_IMPLIED, &ZVFBFMIN_IMPLIED, &ZVFBFWMA_IMPLIED,
> + &ZVE32X_IMPLIED, &ZVE64D_IMPLIED, &ZVE64F_IMPLIED, &ZVE64X_IMPLIED,
> + &ZVFBFA_IMPLIED, &ZVFBFMIN_IMPLIED, &ZVFBFWMA_IMPLIED,
> &ZVFH_IMPLIED, &ZVFHMIN_IMPLIED, &ZVKN_IMPLIED,
> &ZVKNC_IMPLIED, &ZVKNG_IMPLIED, &ZVKNHB_IMPLIED,
> &ZVKS_IMPLIED, &ZVKSC_IMPLIED, &ZVKSG_IMPLIED, &SSCFG_IMPLIED,
> --
> 2.52.0
>
>
next prev parent reply other threads:[~2026-03-09 4:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-06 7:10 [PATCH v5 0/9] Add Zvfbfa extension support Max Chou
2026-03-06 7:10 ` [PATCH v5 1/9] target/riscv: Add cfg properties for Zvfbfa extensions Max Chou
2026-03-09 4:44 ` Alistair Francis
2026-03-06 7:10 ` [PATCH v5 2/9] target/riscv: Add the Zvfbfa extension implied rule Max Chou
2026-03-09 4:45 ` Alistair Francis [this message]
2026-03-06 7:10 ` [PATCH v5 3/9] target/riscv: rvv: Add new VTYPE CSR field - altfmt Max Chou
2026-03-09 4:55 ` Alistair Francis
2026-03-16 9:20 ` Nutty.Liu
2026-03-06 7:10 ` [PATCH v5 4/9] target/riscv: rvv: Introduce reset_ill_vtype to reset illegal vtype CSR Max Chou
2026-03-09 4:55 ` Alistair Francis
2026-03-16 9:22 ` Nutty.Liu
2026-03-06 7:11 ` [PATCH v5 5/9] target/riscv: Use the tb->cs_base as the extend tb flags Max Chou
2026-03-09 5:01 ` Alistair Francis
2026-03-12 11:42 ` Max Chou
2026-03-13 0:59 ` Alistair Francis
2026-03-06 7:11 ` [PATCH v5 6/9] target/riscv: Introduce altfmt into DisasContext Max Chou
2026-03-09 5:02 ` Alistair Francis
2026-03-06 7:11 ` [PATCH v5 7/9] target/riscv: Introduce BF16 canonical NaN for Zvfbfa extension Max Chou
2026-03-09 5:04 ` Alistair Francis
2026-03-06 7:11 ` [PATCH v5 8/9] target/riscv: rvv: Support Zvfbfa vector bf16 operations Max Chou
2026-03-06 7:11 ` [PATCH v5 9/9] target/riscv: Expose Zvfbfa extension as an experimental cpu property Max Chou
2026-03-09 4:51 ` [PATCH v5 0/9] Add Zvfbfa extension support Alistair Francis
2026-03-12 11:16 ` Max Chou
2026-03-13 1:09 ` Alistair Francis
2026-03-16 8:28 ` Max Chou
2026-03-19 3:45 ` Alistair Francis
2026-03-26 3:42 ` Max Chou
2026-03-26 6:07 ` Chao Liu
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