diff mbox series

[02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM

Message ID	20231128145357.413321-3-apatel@ventanamicro.com
State	New
Headers	Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; From: Anup Patel <apatel@ventanamicro.com> To: Paolo Bonzini <pbonzini@redhat.com>, Atish Patra <atishp@atishpatra.org>, Palmer Dabbelt <palmer@dabbelt.com>, Paul Walmsley <paul.walmsley@sifive.com>, Shuah Khan <shuah@kernel.org> Cc: Anup Patel <anup@brainfault.org>, Andrew Jones <ajones@ventanamicro.com>, 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, Anup Patel <apatel@ventanamicro.com> Subject: [PATCH 02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM Date: Tue, 28 Nov 2023 20:23:44 +0530 Message-Id: <20231128145357.413321-3-apatel@ventanamicro.com> In-Reply-To: <20231128145357.413321-1-apatel@ventanamicro.com> References: <20231128145357.413321-1-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	KVM RISC-V report more ISA extensions through ONE_REG \| [00/15] KVM RISC-V report more ISA extensions through ONE_REG [01/15] KVM: riscv: selftests: Generate ISA extension reg_list using macros [02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM [03/15] KVM: riscv: selftests: Add Zbc extension to get-reg-list test [04/15] RISC-V: KVM: Allow scalar crypto extensions for Guest/VM [05/15] KVM: riscv: selftests: Add scaler crypto extensions to get-reg-list test [06/15] RISC-V: KVM: Allow vector crypto extensions for Guest/VM [07/15] KVM: riscv: selftests: Add vector crypto extensions to get-reg-list test [08/15] RISC-V: KVM: Allow Zfh[min] extensions for Guest/VM [09/15] KVM: riscv: selftests: Add Zfh[min] extensions to get-reg-list test [10/15] RISC-V: KVM: Allow Zihintntl extension for Guest/VM [11/15] KVM: riscv: selftests: Add Zihintntl extension to get-reg-list test [12/15] RISC-V: KVM: Allow Zvfh[min] extensions for Guest/VM [13/15] KVM: riscv: selftests: Add Zvfh[min] extensions to get-reg-list test [14/15] RISC-V: KVM: Allow Zfa extension for Guest/VM [15/15] KVM: riscv: selftests: Add Zfa extension to get-reg-list test

Commit Message

Anup Patel Nov. 28, 2023, 2:53 p.m. UTC

  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 <apatel@ventanamicro.com>
---
 arch/riscv/include/uapi/asm/kvm.h | 1 +
 arch/riscv/kvm/vcpu_onereg.c      | 2 ++
 2 files changed, 3 insertions(+)

Comments

Andrew Jones Dec. 13, 2023, 5:16 p.m. UTC | #1

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 <apatel@ventanamicro.com>
> ---
>  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 <ajones@ventanamicro.com>

diff mbox series

Patch

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: