[v5,15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM

Message ID	20240517145302.971019-16-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 v5 15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM Date: Fri, 17 May 2024 16:52:55 +0200 Message-ID: <20240517145302.971019-16-cleger@rivosinc.com> In-Reply-To: <20240517145302.971019-1-cleger@rivosinc.com> References: <20240517145302.971019-1-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 [v5,00/16] Add support for a few Zc* extensions, Zcmop and Zimop [v5,01/16] dt-bindings: riscv: add Zimop ISA extension description [v5,02/16] riscv: add ISA extension parsing for Zimop [v5,03/16] riscv: hwprobe: export Zimop ISA extension [v5,04/16] RISC-V: KVM: Allow Zimop extension for Guest/VM [v5,05/16] KVM: riscv: selftests: Add Zimop extension to get-reg-list test [v5,06/16] dt-bindings: riscv: add Zca, Zcf, Zcd and Zcb ISA extension description [v5,07/16] riscv: add ISA extensions validation callback [v5,08/16] riscv: add ISA parsing for Zca, Zcf, Zcd and Zcb [v5,09/16] riscv: hwprobe: export Zca, Zcf, Zcd and Zcb ISA extensions [v5,10/16] RISC-V: KVM: Allow Zca, Zcf, Zcd and Zcb extensions for Guest/VM [v5,11/16] KVM: riscv: selftests: Add some Zc* extensions to get-reg-list test [v5,12/16] dt-bindings: riscv: add Zcmop ISA extension description [v5,13/16] riscv: add ISA extension parsing for Zcmop [v5,14/16] riscv: hwprobe: export Zcmop ISA extension [v5,15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM [v5,16/16] KVM: riscv: selftests: Add Zcmop extension to get-reg-list test

Message ID

20240517145302.971019-16-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 v5 15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM
Date: Fri, 17 May 2024 16:52:55 +0200
Message-ID: <20240517145302.971019-16-cleger@rivosinc.com>
In-Reply-To: <20240517145302.971019-1-cleger@rivosinc.com>
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Series

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

Commit Message

Clément Léger May 17, 2024, 2:52 p.m. UTC

Extend the KVM ISA extension ONE_REG interface to allow KVM user space
to detect and enable Zcmop 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 57db3fea679f..0366389a0bae 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -172,6 +172,7 @@  enum KVM_RISCV_ISA_EXT_ID {
 	KVM_RISCV_ISA_EXT_ZCB,
 	KVM_RISCV_ISA_EXT_ZCD,
 	KVM_RISCV_ISA_EXT_ZCF,
+	KVM_RISCV_ISA_EXT_ZCMOP,
 	KVM_RISCV_ISA_EXT_MAX,
 };
 
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index 7d47fc910bd9..af4fefa189af 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -52,6 +52,7 @@  static const unsigned long kvm_isa_ext_arr[] = {
 	KVM_ISA_EXT_ARR(ZCB),
 	KVM_ISA_EXT_ARR(ZCD),
 	KVM_ISA_EXT_ARR(ZCF),
+	KVM_ISA_EXT_ARR(ZCMOP),
 	KVM_ISA_EXT_ARR(ZFA),
 	KVM_ISA_EXT_ARR(ZFH),
 	KVM_ISA_EXT_ARR(ZFHMIN),
@@ -136,6 +137,7 @@  static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
 	case KVM_RISCV_ISA_EXT_ZCB:
 	case KVM_RISCV_ISA_EXT_ZCD:
 	case KVM_RISCV_ISA_EXT_ZCF:
+	case KVM_RISCV_ISA_EXT_ZCMOP:
 	case KVM_RISCV_ISA_EXT_ZFA:
 	case KVM_RISCV_ISA_EXT_ZFH:
 	case KVM_RISCV_ISA_EXT_ZFHMIN:

[v5,15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM

Commit Message

Patch