From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 91F4D2D2395 for ; Fri, 19 Sep 2025 07:38:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758267524; cv=none; b=X/fSwmGeMlaTUxg9KT37upGZZr8HEBkoJcTBJuKEwtIMTcm0iXRKHu4TlkKhEorO3Yv3F/H7mKDysuMiTtQRomOGY6tYLVYdmX7kdwlNDGlIa2dtyKq+rVRQEVd3uZU3Cns3BwQa2mqkgZJjpdFtiJIQnhZyCU4Dy0FKULMdqGw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758267524; c=relaxed/simple; bh=B02ziWQmo5WsV+VWudXschLhIhlEAVaMv4vSaAYkoAo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ugz92K6QLQiDOKxUccl59zxsXJCZOhxV/A6EqVgcKrj7BCSm11XqY9/FllKe4nhH584X/lmHpd7mRq0Sj77yIUAF1cflOzzHl3wuj+/XHsJmvevpmeZWLfBrTKyCigwCJGgvMxL1r67upBnaq9nSOsSlUVV6yg3hpUdzjdCUiLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com; spf=pass smtp.mailfrom=bytedance.com; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b=e6xEdJut; arc=none smtp.client-ip=209.85.210.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bytedance.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b="e6xEdJut" Received: by mail-pf1-f181.google.com with SMTP id d2e1a72fcca58-77dedf198d4so1381076b3a.0 for ; Fri, 19 Sep 2025 00:38:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1758267522; x=1758872322; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nvb+N79+1rz+7OJYvNB/1WfSxRwqST+oSw7w/swSoZg=; b=e6xEdJutovv8vBWj0Z1OT1M/IjgwrYJQZaoDRwF4mExF/p3dQ1m30MsX1DK3o1Fip6 Xj3d2436SVMVXkMkpsQag16ghFVSs7Y4CAxmi1KDRxEz5g769CJR3qhU09cUhVNOU23O cgbjf7E7dTGVIAGFm2EdYD8UMG+XI0CkT18iLrUdX4gH1Oy5cXi17keS1bij4eVUOGYH T72oAo0/FseOHnapMIAcJXEnkEQBoUyq2+gLxYvWVQda2rZK6fzoiCbaFDqDZl1hvCPl Ei1Qw6jhdxBCvYWtPTY5rSftB+bNWl9OukGZUiEKEBskQH570v/+bTdAAf8W3wn0l/yo DwLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758267522; x=1758872322; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nvb+N79+1rz+7OJYvNB/1WfSxRwqST+oSw7w/swSoZg=; b=WiWEXaAsx9ZIoNsuHm432Ix1ZjZn2kk927HjVdUOoc6nLr75mwyinOYfoi+s3TrHo4 8At/okIrEm9YaEb9IMw6pa2/X9VqfXtwIjQbXMnIhaU4HyktRdJdROY8kdPz9PdNPejg PiQgYtNMz0RB5DDxN8EukuO7VNEnkzF6ahUwRH/HIEWFJjpyqOnIE/9PkRrDVp760Tpo sAxf+j2kLCX950wiU+PdRvVmOZ6DlnWS3Vfi0fNRjKH9eLMNH5OD0A8dhUAc7nWIEvCe P9rGs0YVt8xalkmkgLjsJVta2qu3oSfyamymLKUUTKpSXGRue32tcXgNsnODujEl1QtL iBIw== X-Gm-Message-State: AOJu0Ywh6WCK4DyMXhmWiZ8qUdu+Gbfcdr3yR49ldh1pcgGq0iFXUBdx WWPA0N/VgDM+AbjmrSw2GVkT4+q9KD+KBlEZMHuhE9hGTfKWH3MgDa4JQWTqCY5tXT8= X-Gm-Gg: ASbGncuonw0GqZQC1j744ClOEiRpA+9dyuQWpN9TxpMeEzWXT2HL0Kx5oqlhGs65owi NVtzmPjCtOvmMTf2x4TI4227184IQyP9QR3mkmSvgE4lYL7ajZRHAThQz/M1tGpLe1T8DAFP3PE 2hrKt+3ojtA65RvNW30g3KzTH1eSRLQm6QxG0SOSC2tRwQd/anA0NzPco5osoH4uUQXHHW5pxru Wz+WmjkvEZ2r7CpaMZl2dKy23Y5SA9b5cpdyOxr4bozt+6OpFSMidGsjONnzbQ88CYTGICOiY0d c7UTzkrDAouWFGO6a2KiwBt+R1dHIGw4OVRN2RWEQR61PJZuTLn4aSGgdyuJTL2RL/XQ1KXCZFi GtLolVA3CVVl9tBK0VvD+1jss+0NWRSqWl2vZrdrs1G7M+6ZBnhhTPq2R/EwidsgZOsG1FPcVkf sqZ54H7S6xJ5RLxYYjCDhzpi4+C1qx0C5Ax5EhM0fbUA== X-Google-Smtp-Source: AGHT+IG/JWbqV8e1pPBSIjwkXI4z09a5l0oBx141z64CDaoUW0Ejq4ZhQwv8kxbRs5Suvs4P3rGR7g== X-Received: by 2002:a05:6a20:549d:b0:250:b053:53c5 with SMTP id adf61e73a8af0-2927405e4c0mr3586688637.51.1758267521877; Fri, 19 Sep 2025 00:38:41 -0700 (PDT) Received: from J9GPGXL7NT.bytedance.net ([61.213.176.57]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b550fd7ebc7sm2679096a12.19.2025.09.19.00.38.31 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 19 Sep 2025 00:38:41 -0700 (PDT) From: Xu Lu To: corbet@lwn.net, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com, mark.rutland@arm.com, parri.andrea@gmail.com, ajones@ventanamicro.com, brs@rivosinc.com, anup@brainfault.org, atish.patra@linux.dev, pbonzini@redhat.com, shuah@kernel.org Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, apw@canonical.com, joe@perches.com, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, Xu Lu Subject: [PATCH v3 7/8] RISC-V: KVM: Allow Zalasr extensions for Guest/VM Date: Fri, 19 Sep 2025 15:37:13 +0800 Message-ID: <20250919073714.83063-8-luxu.kernel@bytedance.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250919073714.83063-1-luxu.kernel@bytedance.com> References: <20250919073714.83063-1-luxu.kernel@bytedance.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zalasr extensions for Guest/VM. Signed-off-by: Xu Lu --- 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 ef27d4289da11..4fbc32ef888fa 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -185,6 +185,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZICCRSE, KVM_RISCV_ISA_EXT_ZAAMO, KVM_RISCV_ISA_EXT_ZALRSC, + KVM_RISCV_ISA_EXT_ZALASR, KVM_RISCV_ISA_EXT_MAX, }; diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index cce6a38ea54f2..6ae5f9859f25b 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -50,6 +50,7 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(ZAAMO), KVM_ISA_EXT_ARR(ZABHA), KVM_ISA_EXT_ARR(ZACAS), + KVM_ISA_EXT_ARR(ZALASR), KVM_ISA_EXT_ARR(ZALRSC), KVM_ISA_EXT_ARR(ZAWRS), KVM_ISA_EXT_ARR(ZBA), @@ -184,6 +185,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_ZAAMO: case KVM_RISCV_ISA_EXT_ZABHA: case KVM_RISCV_ISA_EXT_ZACAS: + case KVM_RISCV_ISA_EXT_ZALASR: case KVM_RISCV_ISA_EXT_ZALRSC: case KVM_RISCV_ISA_EXT_ZAWRS: case KVM_RISCV_ISA_EXT_ZBA: -- 2.20.1