From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f53.google.com (mail-wr1-f53.google.com [209.85.221.53]) (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 4D6DA26AF2 for ; Mon, 27 May 2024 16:29:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716827368; cv=none; b=nFVg/O+azKLklFEvF0m9zVPpTP2HtFKtFETmJhUuE1+fN02+pth3jQo/BlxMQRofQ+zCBhJ9MjiaYQ82uWNRs5kzyLuB/wD4OX2hpLgJlfDh9Nde8G2FVdnU93Wfp+1N0+VJb4WRo8ppL6nYVoYs9/VO3FRrF48EJCRPEgVVQCA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716827368; c=relaxed/simple; bh=3YdPeJC2tHkWxyPRxxZlARmOrfnFjazq6g4bTFO445E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Hb1GPL/psZsKBrMtp/aH/RY/3mKowZ3XKdM3BZ5tsOEOLQSdt8LK5bIiB1TUoC4ysCPIeQfAKUfKz/JdFKmiq2GoRF5yjfz9ZWgb5KfKx3iZqx1Fn2kfcj8XflJlPCyCtof7MF3dmXxi/Fusua1maLf2xFSwXKhapwB3OMaNAPk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=MGBfFmZH; arc=none smtp.client-ip=209.85.221.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="MGBfFmZH" Received: by mail-wr1-f53.google.com with SMTP id ffacd0b85a97d-35508106cc2so2795045f8f.2 for ; Mon, 27 May 2024 09:29:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1716827366; x=1717432166; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=DCdwiEKZsSLlzQmI564yzAeMM+d5MqZnvy70D5v6p6g=; b=MGBfFmZHDeKudFiXHdi9VS0yv/7mzfEcnvuxeCtNAKP3qWeg/miVye8T4MQwHBRnjE Fck0lHj4PXuCIjx5xfd1n8HY1EniI0lzw7Su2qgtUeNGXX2sQB2fHBNgZW904U0fbsLt qZXt40TtAiVkHEP0h5UhlhVqYkwQU3U3IrzTh+xr+jon917InP9KXfsBhrhok5HRF2W0 Ju+cjVdhrxNjEP4+vmV26E7KuvBO6LLW8M8IuBSMRNGxotxpud+j0YTMaDAW7vZ8n7bp NHk6vx6MlzjngdHdR5iXnYIJHNcsY2Rn6PC8wJTH2b0/jnsXPsn2fmuAXE6pCxJQgu0v kkyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716827366; x=1717432166; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=DCdwiEKZsSLlzQmI564yzAeMM+d5MqZnvy70D5v6p6g=; b=MzS6rE7zm66sW4ZGYDnVU72NIGPLIyITvu4yQlWHgtLYJVYXRUz6WJo1Aj3XzDmtbZ 3Qj9xugApIuxv+SUvui3+bmy/5PKYTHEbYhARu80gEETLGjz62C4/dTz+HmRFs33wTII RV1LtDeMmt7w/v26A5nLAKHiyikRUMqR9UucBm2D4T+zopzD0uchS3U548shz9zwUf4B 1LQXmgz8cxHQZ+hOQT41FReeofkvPnMSUtAL8SiFERBSP/FYvcvmJHRm+WAu9H8wWI4n m+Pdu6IN5TH/fDEFWJ1IOX3PhZx1Cph06rTykHD/LZROtBzide2OT4biupS/iN+x2aRQ 1rbA== X-Forwarded-Encrypted: i=1; AJvYcCUlkkuYHEfRusNVW5cfToKk8JAHgHp5/719zhk4YyCxGXO9u7vgtCeUL2c9zHIZmCMOjqWIgK90T1C1Gv5NrGqeQwZGzjR2L0GbL1LC X-Gm-Message-State: AOJu0YxuWLWXABf0BGhKrg4qSgyI3uLAh9T5HtFINnXt80DasJzOct03 N5xySFLd4WA9Gs6A/m0KkaqC5cEmNRoTGl/ylPonV61tWGifKmQThx6w7J5hz9g= X-Google-Smtp-Source: AGHT+IE/a37MX42XQNRb/+dniYNRx1NJyY5t2V95xUKst84x1kU49Lx+w+odCrcs8XgwmmBFVgQQoA== X-Received: by 2002:a5d:420c:0:b0:354:f724:641d with SMTP id ffacd0b85a97d-355270489a7mr6855127f8f.42.1716827365576; Mon, 27 May 2024 09:29:25 -0700 (PDT) Received: from localhost ([176.74.158.132]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3557a1c931csm9402469f8f.79.2024.05.27.09.29.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 May 2024 09:29:25 -0700 (PDT) Date: Mon, 27 May 2024 18:29:24 +0200 From: Andrew Jones To: Yong-Xuan Wang Cc: linux-riscv@lists.infradead.org, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, greentime.hu@sifive.com, vincent.chen@sifive.com, cleger@rivosinc.com, alex@ghiti.fr, Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v4 3/5] RISC-V: KVM: Add Svadu Extension Support for Guest/VM Message-ID: <20240527-0a37c07cf34bbb0d4fb8067c@orel> References: <20240524103307.2684-1-yongxuan.wang@sifive.com> <20240524103307.2684-4-yongxuan.wang@sifive.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240524103307.2684-4-yongxuan.wang@sifive.com> On Fri, May 24, 2024 at 06:33:03PM GMT, Yong-Xuan Wang wrote: > We extend the KVM ISA extension ONE_REG interface to allow VMM tools to > detect and enable Svadu extension for Guest/VM. The ADUE bit in henvcfg > is cleared by default for backward-compatibility. > > Signed-off-by: Yong-Xuan Wang > --- > arch/riscv/include/uapi/asm/kvm.h | 1 + > arch/riscv/kvm/vcpu_onereg.c | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h > index a59a8448deea..bcf99264560d 100644 > --- a/arch/riscv/include/uapi/asm/kvm.h > +++ b/arch/riscv/include/uapi/asm/kvm.h > @@ -167,6 +167,7 @@ enum KVM_RISCV_ISA_EXT_ID { > KVM_RISCV_ISA_EXT_ZFA, > KVM_RISCV_ISA_EXT_ZTSO, > KVM_RISCV_ISA_EXT_ZACAS, > + KVM_RISCV_ISA_EXT_SVADU, > KVM_RISCV_ISA_EXT_MAX, > }; > > diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c > index 994adc26db4b..4166665e215d 100644 > --- a/arch/riscv/kvm/vcpu_onereg.c > +++ b/arch/riscv/kvm/vcpu_onereg.c > @@ -37,6 +37,7 @@ static const unsigned long kvm_isa_ext_arr[] = { > KVM_ISA_EXT_ARR(SMSTATEEN), > KVM_ISA_EXT_ARR(SSAIA), > KVM_ISA_EXT_ARR(SSTC), > + KVM_ISA_EXT_ARR(SVADU), > KVM_ISA_EXT_ARR(SVINVAL), > KVM_ISA_EXT_ARR(SVNAPOT), > KVM_ISA_EXT_ARR(SVPBMT), > -- > 2.17.1 > Reviewed-by: Andrew Jones