From nobody Thu Dec 18 17:52:35 2025 Delivered-To: importer@patchew.org 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; 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=1586168426; cv=none; d=zohomail.com; s=zohoarc; b=SppME+Ozvw84fceTWeVDAMPPIHXp7zrmamb29XgociFkAFk3aLblrcS394UlTYYnJVZOjDyO/xzz6dgaAUXyL8zk9gel1NNguSzbBTlZy/OqZQRmHp8pLv72i5GfkyU0aLhocNQfllxkPoDRjs10KSjIdHA9sWgzxdrVJ7rugJ4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1586168426; 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=XHntAqqIp1yfMbfyBLD5YWm//CZBIX/1MEhVYEjrpFs=; b=RJGZ3ScM64LB2X1/PieC1VNCCv+7DHHEe3U5wchyb2Wst/fs3LwuRYGA2sjC7d3BsanMVd5BmQ51+fRZTwkZunCVRVBwznE9ROLM7tDW/weCuEys2m9WVJ3kwK7Q/hQTvpAwJ8XipFZN2S1KEpyHXH7qC+Y02Qx1j7WGlhqaZHo= 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) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1586168426252978.4277954598753; Mon, 6 Apr 2020 03:20:26 -0700 (PDT) Received: from localhost ([::1]:58202 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLOrg-000449-W1 for importer@patchew.org; Mon, 06 Apr 2020 06:20:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50075) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLOjl-0006gf-Ax for qemu-devel@nongnu.org; Mon, 06 Apr 2020 06:12:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jLOjk-0002i1-57 for qemu-devel@nongnu.org; Mon, 06 Apr 2020 06:12:13 -0400 Received: from mail-wr1-x431.google.com ([2a00:1450:4864:20::431]:37830) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jLOjj-0002hK-Vb for qemu-devel@nongnu.org; Mon, 06 Apr 2020 06:12:12 -0400 Received: by mail-wr1-x431.google.com with SMTP id w10so16771017wrm.4 for ; Mon, 06 Apr 2020 03:12:11 -0700 (PDT) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id f187sm25163765wme.9.2020.04.06.03.12.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Apr 2020 03:12:10 -0700 (PDT) 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=XHntAqqIp1yfMbfyBLD5YWm//CZBIX/1MEhVYEjrpFs=; b=Vcxb52GkSpRKJAWaiDHF/Bd+fmqJVXzGbyy4dxsyA2b7kvNfnXsi2yYcb+a3Trycus Y7wye9MkQzSGe6io6uTQOpslQaP0W6CkgZIdKw8uGXBWNgcNCkEedRtl9djXBh06Ci0G RBjUqTpxzHbU2xUO43PxDzTejKC7qBBmnU5w/EGlX4/TamY39XnIMObN41o8miarqwDp E8AsH1uie6cZ+xL1ZrXfqs968Y1T+fV4hiO+xV7HvMwfSwM6PGhpjwA4pA4gwD6/OMGj 3l9FPdR44PbMtH2NeitXmS+v9F88gD6151ENOegK3HMvlxOi8ph9T8nulxGKhqjXcLhu 7mQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XHntAqqIp1yfMbfyBLD5YWm//CZBIX/1MEhVYEjrpFs=; b=KWCyPUoy0scpu7bzVRghqB+U6unG09D6qiXfNbG3N2izODVQQg4n27JrQlQKiWcKyi rGAFMqewuiQiIFNDgnkzlbIXdfr6ZSx/kTmC9dD6kxgcV6ugOIXDO3USbXx1wEI1KW42 6I4PV/2e3yWDDEmXAifaiO01PBldX77VpbceSDEbn2P5BCMUjunVW5RRXwOL27g3JT6G AJlTdGe2qwfuAO067FDVSf2R2V/YAjpttkJ08cE/VSTkFUeIvXy4R48/SWwr0SFsIiL1 DOHWahYiBEBN+Tji/QGWVvSm63IYy3U1I4baIsiAHFgigO88jY0q9ZlQXhnEWOExf8gv IE9A== X-Gm-Message-State: AGi0PuZT1CwOmN3nok4pWMVyx00XJ0qSMes+THUgx+XmP2Cfu8CAvhhA k1GkbmZ0UGBIWnJU61jfgY5tqdltv59rEA== X-Google-Smtp-Source: APiQypJEbgcdvqTYjrRfS6/cN73CIWnVKpVhNpbKylDZo2eeArZhS7I7ZiZ7xrpHqzhu6eV0kYGGJg== X-Received: by 2002:a5d:4ad1:: with SMTP id y17mr22302128wrs.13.1586167930689; Mon, 06 Apr 2020 03:12:10 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 03/11] target/arm: PSTATE.PAN should not clear exec bits Date: Mon, 6 Apr 2020 11:11:57 +0100 Message-Id: <20200406101205.23027-4-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200406101205.23027-1-peter.maydell@linaro.org> References: <20200406101205.23027-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::431 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Our implementation of the PSTATE.PAN bit incorrectly cleared all access permission bits for privileged access to memory which is user-accessible. It should only affect the privileged read and write permissions; execute permission is dealt with via XN/PXN instead. Fixes: 81636b70c226dc27d7ebc8d Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20200330170651.20901-1-peter.maydell@linaro.org --- target/arm/helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 163c91a1ccd..ed7eb8ab54e 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -10025,9 +10025,11 @@ static int get_S1prot(CPUARMState *env, ARMMMUIdx = mmu_idx, bool is_aa64, prot_rw =3D user_rw; } else { if (user_rw && regime_is_pan(env, mmu_idx)) { - return 0; + /* PAN forbids data accesses but doesn't affect insn fetch */ + prot_rw =3D 0; + } else { + prot_rw =3D simple_ap_to_rw_prot_is_user(ap, false); } - prot_rw =3D simple_ap_to_rw_prot_is_user(ap, false); } =20 if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) { --=20 2.20.1