[v7,04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM

Message ID	20240619113529.676940-5-cleger@rivosinc.com
State	Accepted
Headers	show Return-Path: <kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> From: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= <cleger@rivosinc.com> To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Conor Dooley <conor@kernel.org>, Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Anup Patel <anup@brainfault.org>, Shuah Khan <shuah@kernel.org> Cc: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= <cleger@rivosinc.com>, Atish Patra <atishp@atishpatra.org>, linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org Subject: [PATCH v7 04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM Date: Wed, 19 Jun 2024 13:35:14 +0200 Message-ID: <20240619113529.676940-5-cleger@rivosinc.com> In-Reply-To: <20240619113529.676940-1-cleger@rivosinc.com> References: <20240619113529.676940-1-cleger@rivosinc.com> MIME-Version: 1.0 Precedence: list Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kvm-riscv" <kvm-riscv-bounces@lists.infradead.org> Errors-To: kvm-riscv-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org
Series	Add support for a few Zc* extensions, Zcmop and Zimop \| expand [v7,00/16] Add support for a few Zc* extensions, Zcmop and Zimop [v7,01/16] dt-bindings: riscv: add Zimop ISA extension description [v7,02/16] riscv: add ISA extension parsing for Zimop [v7,03/16] riscv: hwprobe: export Zimop ISA extension [v7,04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM [v7,05/16] KVM: riscv: selftests: Add Zimop extension to get-reg-list test [v7,06/16] dt-bindings: riscv: add Zca, Zcf, Zcd and Zcb ISA extension description [v7,07/16] riscv: add ISA extensions validation callback [v7,08/16] riscv: add ISA parsing for Zca, Zcf, Zcd and Zcb [v7,09/16] riscv: hwprobe: export Zca, Zcf, Zcd and Zcb ISA extensions [v7,10/16] RISC-V: KVM: Allow Zca, Zcf, Zcd and Zcb extensions for Guest/VM [v7,11/16] KVM: riscv: selftests: Add some Zc* extensions to get-reg-list test [v7,12/16] dt-bindings: riscv: add Zcmop ISA extension description [v7,13/16] riscv: add ISA extension parsing for Zcmop [v7,14/16] riscv: hwprobe: export Zcmop ISA extension [v7,15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM [v7,16/16] KVM: riscv: selftests: Add Zcmop extension to get-reg-list test

Message ID

20240619113529.676940-5-cleger@rivosinc.com

State

Accepted

Headers

From: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= <cleger@rivosinc.com>
To: Jonathan Corbet <corbet@lwn.net>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Conor Dooley <conor@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Anup Patel <anup@brainfault.org>,
	Shuah Khan <shuah@kernel.org>
Cc: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= <cleger@rivosinc.com>,
 Atish Patra <atishp@atishpatra.org>, linux-doc@vger.kernel.org,
 linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
 devicetree@vger.kernel.org, kvm@vger.kernel.org,
 kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org
Subject: [PATCH v7 04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM
Date: Wed, 19 Jun 2024 13:35:14 +0200
Message-ID: <20240619113529.676940-5-cleger@rivosinc.com>
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Series

Add support for a few Zc* extensions, Zcmop and Zimop | expand

Commit Message

Clément Léger June 19, 2024, 11:35 a.m. UTC

Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zimop extension for Guest/VM.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Anup Patel <anup@brainfault.org>
---
 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 e878e7cc3978..db482ef0ae1e 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -168,6 +168,7 @@  enum KVM_RISCV_ISA_EXT_ID {
 	KVM_RISCV_ISA_EXT_ZTSO,
 	KVM_RISCV_ISA_EXT_ZACAS,
 	KVM_RISCV_ISA_EXT_SSCOFPMF,
+	KVM_RISCV_ISA_EXT_ZIMOP,
 	KVM_RISCV_ISA_EXT_MAX,
 };
 
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index c676275ea0a0..09f0aa92a4da 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -61,6 +61,7 @@  static const unsigned long kvm_isa_ext_arr[] = {
 	KVM_ISA_EXT_ARR(ZIHINTNTL),
 	KVM_ISA_EXT_ARR(ZIHINTPAUSE),
 	KVM_ISA_EXT_ARR(ZIHPM),
+	KVM_ISA_EXT_ARR(ZIMOP),
 	KVM_ISA_EXT_ARR(ZKND),
 	KVM_ISA_EXT_ARR(ZKNE),
 	KVM_ISA_EXT_ARR(ZKNH),
@@ -143,6 +144,7 @@  static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
 	case KVM_RISCV_ISA_EXT_ZIHINTNTL:
 	case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
 	case KVM_RISCV_ISA_EXT_ZIHPM:
+	case KVM_RISCV_ISA_EXT_ZIMOP:
 	case KVM_RISCV_ISA_EXT_ZKND:
 	case KVM_RISCV_ISA_EXT_ZKNE:
 	case KVM_RISCV_ISA_EXT_ZKNH:

[v7,04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM

Commit Message

Patch