From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC630C76186 for ; Mon, 29 Jul 2019 20:06:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 89567205F4 for ; Mon, 29 Jul 2019 20:06:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389227AbfG2Tkt (ORCPT ); Mon, 29 Jul 2019 15:40:49 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:32899 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389211AbfG2Tkq (ORCPT ); Mon, 29 Jul 2019 15:40:46 -0400 Received: by mail-wr1-f66.google.com with SMTP id n9so63227845wru.0 for ; Mon, 29 Jul 2019 12:40:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=ZgugjlZTeEEE0y6ZY8Fe7n+SwxVvrWXZp+43yEbz1Lw=; b=qAvPLQ/aVSyf4FOj7h4kXae4dw+cEkJlxL3X7smkLeWTAVBXi39rRcakfcAP/GT8Kb 15/YJaCECeLVppeiVdExgZU3NaE7vT/PjkE9cIknQQ3PhYlpvU/3qaAk8YjGnwS6HUQs FtRkLUxnfiTN/t+8QpotSRVoUY18V/yVDQXYaJ8FzOx0JfAwITsLhN4OQkGqVPizZtBs q1WcaOnXKPEoX2iJvhsV2xJUE7lKPyGB1uRUtzc+hJyA5bleJYEGOejFPEyuUodIgdsI lapow/il+e0dGSF/Fteu7SxnLSsB0TlKqdHxtTM5ELhr1fC4ma5/Ih9EMzVm6cguciUU c1bA== X-Gm-Message-State: APjAAAUOPN/iU8Ae8822TvwbGz5YUAzNnOpYwLVuLNWzzzn3jtupL1Uz eio0/pt/MGuhDfnXeiCbr5EYaRgh6JY= X-Google-Smtp-Source: APXvYqztxhuL0SbDbz8vPIEpjg5swquwVED7MQQUtvXwCf8LmsIfLWHOThEiOBoLm/Omt/wkMP0pWw== X-Received: by 2002:adf:ce82:: with SMTP id r2mr44441848wrn.223.1564429244726; Mon, 29 Jul 2019 12:40:44 -0700 (PDT) Received: from ?IPv6:2001:b07:6468:f312:29d3:6123:6d5f:2c04? ([2001:b07:6468:f312:29d3:6123:6d5f:2c04]) by smtp.gmail.com with ESMTPSA id v16sm46139077wrn.28.2019.07.29.12.40.43 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Mon, 29 Jul 2019 12:40:43 -0700 (PDT) Subject: Re: [RFC PATCH 15/16] RISC-V: KVM: Add SBI v0.1 support To: Anup Patel , Palmer Dabbelt , Paul Walmsley , Radim K Cc: Daniel Lezcano , Thomas Gleixner , Atish Patra , Alistair Francis , Damien Le Moal , Christoph Hellwig , Anup Patel , "kvm@vger.kernel.org" , "linux-riscv@lists.infradead.org" , "linux-kernel@vger.kernel.org" References: <20190729115544.17895-1-anup.patel@wdc.com> <20190729115544.17895-16-anup.patel@wdc.com> From: Paolo Bonzini Openpgp: preference=signencrypt Message-ID: Date: Mon, 29 Jul 2019 21:40:45 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190729115544.17895-16-anup.patel@wdc.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/07/19 13:57, Anup Patel wrote: > + csr_write(CSR_HSTATUS, vcpu->arch.guest_context.hstatus | HSTATUS_SPRV); > + csr_write(CSR_SSTATUS, vcpu->arch.guest_context.sstatus); > + val = *addr; What happens if this load faults? Paolo