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Sun, 05 Jul 2026 19:21:38 -0700 (PDT) From: Inochi Amaoto To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Anup Patel , Atish Patra , Paolo Bonzini , Shuah Khan , Charlie Jenkins , Sergey Matyukevich , Thomas Huth , Inochi Amaoto , Deepak Gupta Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, Yixun Lan , Longbin Li , Quan Zhou Subject: [PATCH v5 3/8] RISC-V: KVM: Allow Zicfiss/Zicfilp extensions for Guest/VM Date: Mon, 6 Jul 2026 10:20:39 +0800 Message-ID: <20260706022046.214956-4-inochiama@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260706022046.214956-1-inochiama@gmail.com> References: <20260706022046.214956-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Extend the KVM ISA extension array to allow KVM userspace to detect and enable Zicfiss/Zicfilp extensions for Guest/VM. Assisted-by: YuanSheng:claude-4.7-opus Co-developed-by: Quan Zhou Signed-off-by: Quan Zhou Signed-off-by: Inochi Amaoto --- arch/riscv/include/uapi/asm/kvm.h | 2 ++ arch/riscv/kvm/isa.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index 7bbea8812d92..a27de850fa4c 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -199,6 +199,8 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZCLSD, KVM_RISCV_ISA_EXT_ZILSD, KVM_RISCV_ISA_EXT_ZALASR, + KVM_RISCV_ISA_EXT_ZICFILP, + KVM_RISCV_ISA_EXT_ZICFISS, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/isa.c b/arch/riscv/kvm/isa.c index 1132d909cc25..9852a91fdecc 100644 --- a/arch/riscv/kvm/isa.c +++ b/arch/riscv/kvm/isa.c @@ -65,6 +65,8 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(ZICBOP), KVM_ISA_EXT_ARR(ZICBOZ), KVM_ISA_EXT_ARR(ZICCRSE), + KVM_ISA_EXT_ARR(ZICFILP), + KVM_ISA_EXT_ARR(ZICFISS), KVM_ISA_EXT_ARR(ZICNTR), KVM_ISA_EXT_ARR(ZICOND), KVM_ISA_EXT_ARR(ZICSR), -- 2.55.0