From nobody Fri Dec 19 14:41:52 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1646256165; cv=none; d=zohomail.com; s=zohoarc; b=Dj2LDYbKeZXf0l9QmNifpISnOY7TKlEEzL+AfaqUF/vOoS2eWIF24zwpMZ7NY2FE6tOHhE9L9YkGsNdt8zYQBrYjupQB/UjcCtejY1x2/J2SCMh/FczLGBJYuqW+Fsdlf8/Ft2PITEuBAwzTfd42w4bLYpxVAqWP5I1nN2Gx/E8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1646256165; h=Content-Transfer-Encoding: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=GGAK7LeYb7Sg1wWh/ohAGGWT9a5QRy3Af01VtMkcT+c=; b=fh4YQSWKIhIkOdLpV2/CxXZ8whhK/Csd35rIiCj+4HkafclkpGkvNpRbDBDUHv8x6eTghdP2pInPz+8282zCBSx5YGPpvPoLsV57Is29Bidjb8pJPQczdfKz08+iIMiwSt4smmYCRikHWXAYS2r+6D/IbQknI835dOa6SAec+Mc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1646256165710185.61236401452322; Wed, 2 Mar 2022 13:22:45 -0800 (PST) Received: from localhost ([::1]:47486 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nPWQm-0003NW-Is for importer@patchew.org; Wed, 02 Mar 2022 16:22:44 -0500 Received: from eggs.gnu.org ([209.51.188.92]:43550) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPVxr-0005rn-Uj for qemu-devel@nongnu.org; Wed, 02 Mar 2022 15:52:53 -0500 Received: from [2a00:1450:4864:20::431] (port=40931 helo=mail-wr1-x431.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nPVxq-0008P1-4n for qemu-devel@nongnu.org; Wed, 02 Mar 2022 15:52:51 -0500 Received: by mail-wr1-x431.google.com with SMTP id n14so4683950wrq.7 for ; Wed, 02 Mar 2022 12:52:49 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id x13-20020adfec0d000000b001e31279cc38sm90801wrn.11.2022.03.02.12.52.47 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Mar 2022 12:52:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=GGAK7LeYb7Sg1wWh/ohAGGWT9a5QRy3Af01VtMkcT+c=; b=Pvhb2gzlUtTu05nadRJS0ZJjs36rL+2f2Fhv3hUzbdJIA3vHFu7wUknJpeOzIrxlT2 N4eyGdsUrtzTD/EoOO+Fe2E7bFHIxUrWH3Gcvm/GhDCsto3IL0DLA7IsVlSnAeUXTOin qm9wsRW1GBJ1ZteIp55OV5QtTlizguEWbOvXcqu0w1+evoqpkuFW1SlkO7JkdrqGbjfE fclo9qE6bBlKKZhRSm5CpL9Jk6fMhoQ8vaUoPbQp+DiQYBPSTX8WXgY6pfdcksO9vXvX jA42NnFhZbQJJnQi/egHSISZ8AqLXEJTtn76yHADOFSINduu5MLzgk0Ep7EfZsMcKdED 6pxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GGAK7LeYb7Sg1wWh/ohAGGWT9a5QRy3Af01VtMkcT+c=; b=qFE6Vk1QaanChkgDqrXhrjyW363S/2hjLpCr15Ct0XjySBLsPsVWxGDeJdnWWTiDNM T067XkGzqIkYc6GLJ5ozzj/MVC3WkugaRjhl3VOX5kRZ5vIRtZi2NEd+nZCovN3EuExd 9kxI/VZtdY1/GiZ9IINo3NsMLvpBYYJB8GYcDWx/VCw/wPf0SB29LORLRjB41zPf1VF1 jShikK+egGc+n7iVqskO9WVEzGr502i62ZpKIpFGYbg1it3QZynwG7JPb4l8+ekLYupZ faE+3Ug3XXqoT5qlEDJOxOv1fD0JQJC3aKhIhk4nQ+VEhCFvEJiNutJtbZqr1jsWyde2 oSRQ== X-Gm-Message-State: AOAM5306diBANQQAld0V1Se14mgGvJhiPliJMesiyKMqS9QckJqccjfU /ZLvITmMJf4L+tVEeatQ3JpmBEIOZvCo1g== X-Google-Smtp-Source: ABdhPJxSij4wqMFUTXQrEJzC933ZZEXeWP6uGSsXKI7tl/91MMs3pg51RZJgGZi42jgvS4VLggrjeg== X-Received: by 2002:adf:8b58:0:b0:1f0:241e:9b51 with SMTP id v24-20020adf8b58000000b001f0241e9b51mr4874252wra.539.1646254368393; Wed, 02 Mar 2022 12:52:48 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 18/26] target/arm: Extend arm_fi_to_lfsc to level -1 Date: Wed, 2 Mar 2022 20:52:22 +0000 Message-Id: <20220302205230.2122390-19-peter.maydell@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220302205230.2122390-1-peter.maydell@linaro.org> References: <20220302205230.2122390-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::431 (failed) 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::431; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x431.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1646256166681100001 Content-Type: text/plain; charset="utf-8" From: Richard Henderson With FEAT_LPA2, rather than introducing translation level 4, we introduce level -1, below the current level 0. Extend arm_fi_to_lfsc to handle these faults. Assert that this new translation level does not leak into fault types for which it is not defined, which allows some masking of fi->level to be removed. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20220301215958.157011-12-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/internals.h | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index 3d3d41ba2b7..00af41d7925 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -462,28 +462,51 @@ static inline uint32_t arm_fi_to_lfsc(ARMMMUFaultInfo= *fi) case ARMFault_None: return 0; case ARMFault_AddressSize: - fsc =3D fi->level & 3; + assert(fi->level >=3D -1 && fi->level <=3D 3); + if (fi->level < 0) { + fsc =3D 0b101001; + } else { + fsc =3D fi->level; + } break; case ARMFault_AccessFlag: - fsc =3D (fi->level & 3) | (0x2 << 2); + assert(fi->level >=3D 0 && fi->level <=3D 3); + fsc =3D 0b001000 | fi->level; break; case ARMFault_Permission: - fsc =3D (fi->level & 3) | (0x3 << 2); + assert(fi->level >=3D 0 && fi->level <=3D 3); + fsc =3D 0b001100 | fi->level; break; case ARMFault_Translation: - fsc =3D (fi->level & 3) | (0x1 << 2); + assert(fi->level >=3D -1 && fi->level <=3D 3); + if (fi->level < 0) { + fsc =3D 0b101011; + } else { + fsc =3D 0b000100 | fi->level; + } break; case ARMFault_SyncExternal: fsc =3D 0x10 | (fi->ea << 12); break; case ARMFault_SyncExternalOnWalk: - fsc =3D (fi->level & 3) | (0x5 << 2) | (fi->ea << 12); + assert(fi->level >=3D -1 && fi->level <=3D 3); + if (fi->level < 0) { + fsc =3D 0b010011; + } else { + fsc =3D 0b010100 | fi->level; + } + fsc |=3D fi->ea << 12; break; case ARMFault_SyncParity: fsc =3D 0x18; break; case ARMFault_SyncParityOnWalk: - fsc =3D (fi->level & 3) | (0x7 << 2); + assert(fi->level >=3D -1 && fi->level <=3D 3); + if (fi->level < 0) { + fsc =3D 0b011011; + } else { + fsc =3D 0b011100 | fi->level; + } break; case ARMFault_AsyncParity: fsc =3D 0x19; --=20 2.25.1