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[2001:1ae9:1c2:4c00:20f:c6b4:1e57:7965]) by smtp.gmail.com with ESMTPSA id w22-20020aa7da56000000b0051e1a4454b2sm4134322eds.67.2023.07.13.04.27.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jul 2023 04:27:09 -0700 (PDT) Date: Thu, 13 Jul 2023 13:27:08 +0200 From: Andrew Jones To: Anup Patel Cc: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Heiko Stuebner , Samuel Ortiz , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/7] RISC-V: KVM: Extend ONE_REG to enable/disable multiple ISA extensions Message-ID: <20230713-3dd9e72ecd9f7926a2035f59@orel> References: <20230712161047.1764756-1-apatel@ventanamicro.com> <20230712161047.1764756-3-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230712161047.1764756-3-apatel@ventanamicro.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 12, 2023 at 09:40:42PM +0530, Anup Patel wrote: > Currently, the ISA extension ONE_REG interface only allows enabling or > disabling one extension at a time. To improve this, we extend the ISA > extension ONE_REG interface (similar to SBI extension ONE_REG interface) > so that KVM user space can enable/disable multiple extensions in one > ioctl. > > Signed-off-by: Anup Patel > --- > arch/riscv/include/uapi/asm/kvm.h | 9 ++ > arch/riscv/kvm/vcpu_onereg.c | 153 ++++++++++++++++++++++++------ > 2 files changed, 133 insertions(+), 29 deletions(-) > Reviewed-by: Andrew Jones