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Sun, 05 Jul 2026 19:12:38 -0700 (PDT) Received: from localhost ([2001:da8:7001:11::cb]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38127c1c68bsm4006978a91.7.2026.07.05.19.12.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jul 2026 19:12:37 -0700 (PDT) From: Inochi Amaoto To: Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Inochi Amaoto , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Yixun Lan , Longbin Li Subject: [PATCH v2 2/3] RISC-V: KVM: Add SBI FWFT validation support Date: Mon, 6 Jul 2026 10:11:51 +0800 Message-ID: <20260706021154.210289-3-inochiama@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260706021154.210289-1-inochiama@gmail.com> References: <20260706021154.210289-1-inochiama@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260705_191239_084900_3506F3DC X-CRM114-Status: GOOD ( 11.75 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Since the KVM SBI has extension parameters validation support, implement it for the SBI FWFT support. Signed-off-by: Inochi Amaoto --- arch/riscv/kvm/vcpu_sbi_fwft.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c index bc514ae6521d..0aa1f9a57c90 100644 --- a/arch/riscv/kvm/vcpu_sbi_fwft.c +++ b/arch/riscv/kvm/vcpu_sbi_fwft.c @@ -604,6 +604,30 @@ static void kvm_sbi_ext_fwft_reset(struct kvm_vcpu *vcpu) } } +static void kvm_sbi_ext_fwft_validate(struct kvm_vcpu *vcpu) +{ + struct kvm_sbi_fwft *fwft = vcpu_to_fwft(vcpu); + const struct kvm_sbi_fwft_feature *feature; + struct kvm_sbi_fwft_config *conf; + int i; + + for (i = 0; i < ARRAY_SIZE(features); i++) { + feature = &features[i]; + conf = &fwft->configs[i]; + if (!conf->supported) + continue; + + if (!feature->supported || feature->supported(vcpu)) + continue; + + conf->enabled = false; + conf->flags = 0; + + if (feature->reset) + feature->reset(vcpu); + } +} + static unsigned long kvm_sbi_ext_fwft_get_reg_count(struct kvm_vcpu *vcpu) { unsigned long max_reg_count = sizeof(struct kvm_riscv_sbi_fwft) / sizeof(unsigned long); @@ -756,6 +780,7 @@ const struct kvm_vcpu_sbi_extension vcpu_sbi_ext_fwft = { .init = kvm_sbi_ext_fwft_init, .deinit = kvm_sbi_ext_fwft_deinit, .reset = kvm_sbi_ext_fwft_reset, + .validate = kvm_sbi_ext_fwft_validate, .state_reg_subtype = KVM_REG_RISCV_SBI_FWFT, .get_state_reg_count = kvm_sbi_ext_fwft_get_reg_count, .get_state_reg_id = kvm_sbi_ext_fwft_get_reg_id, -- 2.55.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv