From patchwork Mon Feb 3 14:47:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 1232861 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=LhDXlIAY; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48B9ms4BTYz9sRh for ; Tue, 4 Feb 2020 01:53:17 +1100 (AEDT) Received: from localhost ([::1]:42530 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyd6B-0000RW-HJ for incoming@patchwork.ozlabs.org; Mon, 03 Feb 2020 09:53:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:44815) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyd0m-0007Hv-I4 for qemu-devel@nongnu.org; Mon, 03 Feb 2020 09:47:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iyd0l-0003VD-D3 for qemu-devel@nongnu.org; Mon, 03 Feb 2020 09:47:40 -0500 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]:38267) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iyd0l-0003Sh-6g for qemu-devel@nongnu.org; Mon, 03 Feb 2020 09:47:39 -0500 Received: by mail-wr1-x441.google.com with SMTP id y17so18550482wrh.5 for ; Mon, 03 Feb 2020 06:47:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=JSoxWa3cljnlHVlVCNXL6Dtt3Ft2EaSM4NkE+KvUy1o=; b=LhDXlIAYlGQoxULJ1aL2M2PuCCsffiUtg3+tzKF/REVKWhflCJhFA8uOeXArqL0m3F qhosnnxFxUxc2i5Csu6n0lIMKGN7rooh5G1V37CbjwIALt1kXUtcxNXBS09CfKarYUj4 c3/CwQZIq3isofwbq+YbjXHixlrX44bJ/5Gh+pT2DdGB4LCpoikYNUeLB8MxyXlGRiHx 4Y+KQW6S7HPJJhzTup/4t0FvdQE0n8iWv+YJkpehay5CfPTwwuhamRFfOmKxgs7h1tw0 9z0POq6DN6VVOHbqq376TKDUZJYsfmi9/v+mTDQdOP39at0hj/nIA9dsLAaIQZOIJkif lcYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=JSoxWa3cljnlHVlVCNXL6Dtt3Ft2EaSM4NkE+KvUy1o=; b=AyykF46YKUA9HdIpmGAbF82TIXpmrlK1L2iUjor0B07AFZiOLmTiBnO6HXA6VEr2Dc y+Eghuv8ueAVPcablHvPinZNABI0xdCZKb6puSVgYBNWfO+5KC1f6TAZZ+ABl7ZIQtZM Hj17h6+8ZOBR3KjLjbVtINYxIRRQ5iRzG6FukUPtVyeOgwI6hMbDyne62rzIFhjij7rA Bg7EMfSp/WxdOYqce+mHe7JfDozNJYZbKfRM0SqRuZ15aEqULnk9/qONoLrYtcIBJ/RD ny7ZaE1mWlpBL/je4KKL9k3lSso9s4m2KZqbrMNkTebI4peFCNym5t2AJGmXZ3iCoMVp 4wlw== X-Gm-Message-State: APjAAAW28svzVpTdiZLuDhfX0Wfoc/UI3LNFDKIOfVr2A3Io5Ek440X5 2HMz75fVyjZ2vOTMmHasz6+QcteLfEVh+g== X-Google-Smtp-Source: APXvYqymT3gTO7OvOfzWpHn38gu8neTIBMaLCKiu1j+kZJrbo+DRvskBncCgjDynG3VgCBr3qanxGQ== X-Received: by 2002:adf:f28c:: with SMTP id k12mr16876820wro.360.1580741257423; Mon, 03 Feb 2020 06:47:37 -0800 (PST) Received: from cloudburst.c.hoisthospitality.com ([135.196.99.211]) by smtp.gmail.com with ESMTPSA id h2sm26429739wrt.45.2020.02.03.06.47.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Feb 2020 06:47:36 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 19/20] target/arm: Implement UAO semantics Date: Mon, 3 Feb 2020 14:47:15 +0000 Message-Id: <20200203144716.32204-20-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200203144716.32204-1-richard.henderson@linaro.org> References: <20200203144716.32204-1-richard.henderson@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::441 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@linaro.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" We need only override the current condition under which TBFLAG_A64.UNPRIV is set. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/helper.c | 41 +++++++++++++++++++++-------------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index d847b0f40b..b24a6a6526 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -12194,28 +12194,29 @@ static uint32_t rebuild_hflags_a64(CPUARMState *env, int el, int fp_el, } /* Compute the condition for using AccType_UNPRIV for LDTR et al. */ - /* TODO: ARMv8.2-UAO */ - switch (mmu_idx) { - case ARMMMUIdx_E10_1: - case ARMMMUIdx_E10_1_PAN: - case ARMMMUIdx_SE10_1: - case ARMMMUIdx_SE10_1_PAN: - /* TODO: ARMv8.3-NV */ - flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1); - break; - case ARMMMUIdx_E20_2: - case ARMMMUIdx_E20_2_PAN: - /* TODO: ARMv8.4-SecEL2 */ - /* - * Note that E20_2 is gated by HCR_EL2.E2H == 1, but E20_0 is - * gated by HCR_EL2. == '11', and so is LDTR. - */ - if (env->cp15.hcr_el2 & HCR_TGE) { + if (!(env->pstate & PSTATE_UAO)) { + switch (mmu_idx) { + case ARMMMUIdx_E10_1: + case ARMMMUIdx_E10_1_PAN: + case ARMMMUIdx_SE10_1: + case ARMMMUIdx_SE10_1_PAN: + /* TODO: ARMv8.3-NV */ flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1); + break; + case ARMMMUIdx_E20_2: + case ARMMMUIdx_E20_2_PAN: + /* TODO: ARMv8.4-SecEL2 */ + /* + * Note that EL20_2 is gated by HCR_EL2.E2H == 1, but EL20_0 is + * gated by HCR_EL2. == '11', and so is LDTR. + */ + if (env->cp15.hcr_el2 & HCR_TGE) { + flags = FIELD_DP32(flags, TBFLAG_A64, UNPRIV, 1); + } + break; + default: + break; } - break; - default: - break; } return rebuild_hflags_common(env, fp_el, mmu_idx, flags);