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[2001:1ae9:1c2:4c00:20f:c6b4:1e57:7965]) by smtp.gmail.com with ESMTPSA id o8-20020a5d4a88000000b00334b302e97fsm13746137wrq.96.2023.12.13.09.16.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Dec 2023 09:17:00 -0800 (PST) Date: Wed, 13 Dec 2023 18:16:59 +0100 From: Andrew Jones To: Anup Patel Cc: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Shuah Khan , Anup Patel , devicetree@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH 02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM Message-ID: <20231213-73671e24dacd8ae821943638@orel> References: <20231128145357.413321-1-apatel@ventanamicro.com> <20231128145357.413321-3-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20231128145357.413321-3-apatel@ventanamicro.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231213_091705_047301_F795AA64 X-CRM114-Status: GOOD ( 14.13 ) 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 On Tue, Nov 28, 2023 at 08:23:44PM +0530, Anup Patel wrote: > We extend the KVM ISA extension ONE_REG interface to allow KVM > user space to detect and enable Zbc extension for Guest/VM. > > Signed-off-by: Anup Patel > --- > arch/riscv/include/uapi/asm/kvm.h | 1 + > arch/riscv/kvm/vcpu_onereg.c | 2 ++ > 2 files changed, 3 insertions(+) > > diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h > index 60d3b21dead7..518b368b41e5 100644 > --- a/arch/riscv/include/uapi/asm/kvm.h > +++ b/arch/riscv/include/uapi/asm/kvm.h > @@ -139,6 +139,7 @@ enum KVM_RISCV_ISA_EXT_ID { > KVM_RISCV_ISA_EXT_ZIHPM, > KVM_RISCV_ISA_EXT_SMSTATEEN, > KVM_RISCV_ISA_EXT_ZICOND, > + KVM_RISCV_ISA_EXT_ZBC, > KVM_RISCV_ISA_EXT_MAX, > }; > > diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c > index f8c9fa0c03c5..f789517c9fae 100644 > --- a/arch/riscv/kvm/vcpu_onereg.c > +++ b/arch/riscv/kvm/vcpu_onereg.c > @@ -42,6 +42,7 @@ static const unsigned long kvm_isa_ext_arr[] = { > KVM_ISA_EXT_ARR(SVPBMT), > KVM_ISA_EXT_ARR(ZBA), > KVM_ISA_EXT_ARR(ZBB), > + KVM_ISA_EXT_ARR(ZBC), > KVM_ISA_EXT_ARR(ZBS), > KVM_ISA_EXT_ARR(ZICBOM), > KVM_ISA_EXT_ARR(ZICBOZ), > @@ -92,6 +93,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) > case KVM_RISCV_ISA_EXT_SVNAPOT: > case KVM_RISCV_ISA_EXT_ZBA: > case KVM_RISCV_ISA_EXT_ZBB: > + case KVM_RISCV_ISA_EXT_ZBC: > case KVM_RISCV_ISA_EXT_ZBS: > case KVM_RISCV_ISA_EXT_ZICNTR: > case KVM_RISCV_ISA_EXT_ZICOND: > -- > 2.34.1 > Reviewed-by: Andrew Jones _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv