Received-SPF: pass (google.com: domain of linux-kernel+bounces-200644-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= <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?q?Cl=C3=A9ment=20L=C3=A9ger?= <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 v6 15/16] RISC-V: KVM: Allow Zcmop extension for Guest/VM
Date: Tue,  4 Jun 2024 14:45:47 +0200
Message-ID: <20240604124550.3214710-16-cleger@rivosinc.com>
In-Reply-To: <20240604124550.3214710-1-cleger@rivosinc.com>
References: <20240604124550.3214710-1-cleger@rivosinc.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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 71b17a6799e6..a6215634df7c 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -173,6 +173,7 @@ 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 f68b15b15f0e..fa5ee544bc69 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -53,6 +53,7 @@ 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),
@@ -142,6 +143,7 @@ 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:
-- 
2.45.1