From nobody Fri Nov 14 19:24:22 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1589817408; cv=none; d=zohomail.com; s=zohoarc; b=TaCCw0350+SW5xuuULKQG9IYIgt82BBIIUhpyvvNXiZU/E+56+gUlk9e0ZPjPaRrLq2eeqDlFiu28iV4WzRxLRNkgDbRVc1zNhcvJEYnXgoOkQPaOFNtPze418MT5wW5SgHg/IZBUn1oHXae9apWksCUxtw9EBICQw3CajCGZIo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1589817408; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=MwRjIJKrjZvOQLKRDS7bp2j+HXuefv0dlJUo1+WtTjQ=; b=C/fS5CFT4pIulteyLtJfhZzlh/7bvfwjO8XzryFN7oL1jkvpArURpLcF6UvCfVVRxU+RlEU1MrSC89TXzhCnTOh+17JGdiYwsZJCSPqRupuyW5/+0rSix/i8ZEYlfopsVsHyb/ydOSJO7Z3FlSvfm6/qx5mFxEkvyuKR21PHnxk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1589817408173255.38592493780527; Mon, 18 May 2020 08:56:48 -0700 (PDT) Received: from localhost ([::1]:49386 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jai8E-0001Od-Ou for importer@patchew.org; Mon, 18 May 2020 11:56:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52630) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jai4u-0003Gi-Mq; Mon, 18 May 2020 11:53:20 -0400 Received: from mail-wr1-x443.google.com ([2a00:1450:4864:20::443]:43678) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jai4t-00006f-A7; Mon, 18 May 2020 11:53:20 -0400 Received: by mail-wr1-x443.google.com with SMTP id i15so12425723wrx.10; Mon, 18 May 2020 08:53:18 -0700 (PDT) Received: from x1w.redhat.com (17.red-88-21-202.staticip.rima-tde.net. [88.21.202.17]) by smtp.gmail.com with ESMTPSA id 7sm17647462wra.50.2020.05.18.08.53.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2020 08:53:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=MwRjIJKrjZvOQLKRDS7bp2j+HXuefv0dlJUo1+WtTjQ=; b=egYB1VpdfFdcLU33RJfphrswTKxeIP4BjafZIjlthVmO7DNr1l7McScI+IvtmLndG9 WjD9LpiJcPgoH1MQBUkML5lgSFY7x3NaGka7xlkROcXaUy0M0SBcrXd5T4VzdZLNz/tc JPL6wSS5HtdO9ff8Wg6X7bJESUkg8Ef8SEfUZKgdpq2BBN6kuw95k/w84PQl6K2QTuQC IfkMkWm7skqibMMRLPYi373AjZVNZgP9ah9kIfJgJMlSEaP6vC7XibL1zckb5Buz9xo2 NTkPmJYYngauoD6KSjjGbIr3/BaenDgDt52tGVYYC0VdUp9L+LhUZnZUisxS9bM1br6K NHqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=MwRjIJKrjZvOQLKRDS7bp2j+HXuefv0dlJUo1+WtTjQ=; b=OVhAN4A7VXJCGXmqnREoWY1LvSbuojT9QzZn6Y9fcxA19BnN9ziPb3lxzrVvT8iYWM 3ae2YPRD+5wHbkI5ahZjcRIN48r52ySMCnHxJCvn2goOWyVgK42KhonVwGXqDofzOYNs 8cMGrF3qTXJMVPFM1aW+A6UFcjucqgK+V10bD3zBtPAdOll9R61eh22h7LeYx/S3pApP aYYK+t7cRmoGgVNvkH47oMiwxhF8e2YmDJsTBLl3wPyax863+PKWK+tqvFua+zvdiWo4 bha864oieXXP31hd0TYgYd6zs5mmng0J66S0A9oRGRPpq5biVZ2NAQaJ11KqWe8oY8m8 M+jw== X-Gm-Message-State: AOAM533rn9X8wOIXaj5rEwJkcBEwC+MzCbYSuNeBbKVKAlU/WEf44KzS KRR8Rwd6EsZ/BIgfYdLM/NB8pDW6Pq4= X-Google-Smtp-Source: ABdhPJz1bQDAMP2DFoPgL6gHBe6UaVxFp/cuSu6npvqkdthflrPa4uaDYx8RUUQurNbZEJssxkBzSA== X-Received: by 2002:a5d:6144:: with SMTP id y4mr21050664wrt.185.1589817197210; Mon, 18 May 2020 08:53:17 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [RFC PATCH v2 6/7] accel/kvm: Let KVM_EXIT_MMIO return error Date: Mon, 18 May 2020 17:53:07 +0200 Message-Id: <20200518155308.15851-7-f4bug@amsat.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200518155308.15851-1-f4bug@amsat.org> References: <20200518155308.15851-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::443; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wr1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , kvm@vger.kernel.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-arm@nongnu.org, Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Give the hypervisor a possibility to catch any error occuring during KVM_EXIT_MMIO. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- RFC because maybe we simply want to ignore this error instead --- accel/kvm/kvm-all.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index d06cc04079..8dbcb8fda3 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -2357,6 +2357,7 @@ int kvm_cpu_exec(CPUState *cpu) =20 do { MemTxAttrs attrs; + MemTxResult res; =20 if (cpu->vcpu_dirty) { kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); @@ -2429,12 +2430,12 @@ int kvm_cpu_exec(CPUState *cpu) case KVM_EXIT_MMIO: DPRINTF("handle_mmio\n"); /* Called outside BQL */ - address_space_rw(&address_space_memory, - run->mmio.phys_addr, attrs, - run->mmio.data, - run->mmio.len, - run->mmio.is_write); - ret =3D 0; + res =3D address_space_rw(&address_space_memory, + run->mmio.phys_addr, attrs, + run->mmio.data, + run->mmio.len, + run->mmio.is_write); + ret =3D res =3D=3D MEMTX_OK ? 0 : -1; break; case KVM_EXIT_IRQ_WINDOW_OPEN: DPRINTF("irq_window_open\n"); --=20 2.21.3