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Sun, 08 Mar 2026 21:45:43 -0700 (PDT) MIME-Version: 1.0 References: <20260306071105.3328365-1-max.chou@sifive.com> <20260306071105.3328365-3-max.chou@sifive.com> In-Reply-To: <20260306071105.3328365-3-max.chou@sifive.com> From: Alistair Francis Date: Mon, 9 Mar 2026 14:45:16 +1000 X-Gm-Features: AaiRm50CW7AB51VIqdwiyEVfilJouyYCLS8xgLIB7YBmjEwK3Sa0n0fWoEl2ti4 Message-ID: Subject: Re: [PATCH v5 2/9] target/riscv: Add the Zvfbfa extension implied rule To: Max Chou Cc: qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Palmer Dabbelt , Alistair Francis , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Chao Liu , Daniel Henrique Barboza , Nutty Liu Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::52c; envelope-from=alistair23@gmail.com; helo=mail-ed1-x52c.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UPPERCASE_50_75=0.008 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, Mar 6, 2026 at 5:13=E2=80=AFPM Max Chou wrote= : > > According to the Zvfbfa isa spec: > The Zvfbfa extension requires the Zve32f and Zfbfmin extensions. > > Reviewed-by: Daniel Henrique Barboza > Reviewed-by: Nutty Liu > Reviewed-by: Chao Liu > Signed-off-by: Max Chou Reviewed-by: Alistair Francis 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 =3D { > }, > }; > > +static RISCVCPUImpliedExtsRule ZVFBFA_IMPLIED =3D { > + .ext =3D CPU_CFG_OFFSET(ext_zvfbfa), > + .implied_multi_exts =3D { > + CPU_CFG_OFFSET(ext_zve32f), CPU_CFG_OFFSET(ext_zfbfmin), > + > + RISCV_IMPLIED_EXTS_RULE_END > + }, > +}; > + > RISCVCPUImpliedExtsRule *riscv_misa_ext_implied_rules[] =3D { > &RVA_IMPLIED, &RVD_IMPLIED, &RVF_IMPLIED, > &RVM_IMPLIED, &RVV_IMPLIED, NULL > @@ -2632,8 +2641,8 @@ RISCVCPUImpliedExtsRule *riscv_multi_ext_implied_ru= les[] =3D { > &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 > >