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>,
Conor Dooley <conor@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Shuah Khan <shuah@kernel.org>
Cc: Andrew Jones <ajones@ventanamicro.com>,
Mayuresh Chitale <mchitale@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 v3 3/6] RISC-V: KVM: Allow Zicond extension for Guest/VM
Date: Tue, 3 Oct 2023 09:22:23 +0530 [thread overview]
Message-ID: <20231003035226.1945725-4-apatel@ventanamicro.com> (raw)
In-Reply-To: <20231003035226.1945725-1-apatel@ventanamicro.com>
We extend the KVM ISA extension ONE_REG interface to allow KVM
user space to detect and enable Zicond extension for Guest/VM.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@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 b1baf6f096a3..917d8cc2489e 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -138,6 +138,7 @@ enum KVM_RISCV_ISA_EXT_ID {
KVM_RISCV_ISA_EXT_ZIFENCEI,
KVM_RISCV_ISA_EXT_ZIHPM,
KVM_RISCV_ISA_EXT_SMSTATEEN,
+ KVM_RISCV_ISA_EXT_ZICOND,
KVM_RISCV_ISA_EXT_MAX,
};
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index 388599fcf684..c6ebce6126b5 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -46,6 +46,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
KVM_ISA_EXT_ARR(ZICBOM),
KVM_ISA_EXT_ARR(ZICBOZ),
KVM_ISA_EXT_ARR(ZICNTR),
+ KVM_ISA_EXT_ARR(ZICOND),
KVM_ISA_EXT_ARR(ZICSR),
KVM_ISA_EXT_ARR(ZIFENCEI),
KVM_ISA_EXT_ARR(ZIHINTPAUSE),
@@ -93,6 +94,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
case KVM_RISCV_ISA_EXT_ZBB:
case KVM_RISCV_ISA_EXT_ZBS:
case KVM_RISCV_ISA_EXT_ZICNTR:
+ case KVM_RISCV_ISA_EXT_ZICOND:
case KVM_RISCV_ISA_EXT_ZICSR:
case KVM_RISCV_ISA_EXT_ZIFENCEI:
case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
--
2.34.1
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next prev parent reply other threads:[~2023-10-03 3:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 3:52 [PATCH v3 0/6] KVM RISC-V Conditional Operations Anup Patel
2023-10-03 3:52 ` [PATCH v3 1/6] dt-bindings: riscv: Add Zicond extension entry Anup Patel
2023-10-03 3:52 ` [PATCH v3 2/6] RISC-V: Detect Zicond from ISA string Anup Patel
2023-10-04 14:07 ` Palmer Dabbelt
2023-10-05 5:50 ` Anup Patel
2023-10-03 3:52 ` Anup Patel [this message]
2023-10-03 3:52 ` [PATCH v3 4/6] KVM: riscv: selftests: Add senvcfg register to get-reg-list test Anup Patel
2023-10-03 3:52 ` [PATCH v3 5/6] KVM: riscv: selftests: Add smstateen registers " Anup Patel
2023-10-03 3:52 ` [PATCH v3 6/6] KVM: riscv: selftests: Add condops extensions " Anup Patel
2023-10-05 6:05 ` [PATCH v3 0/6] KVM RISC-V Conditional Operations Anup Patel
2023-10-12 14:04 ` Anup Patel
2023-11-12 0:55 ` patchwork-bot+linux-riscv
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