From patchwork Thu Sep 30 05:44:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 12527309 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9110C4332F for ; Thu, 30 Sep 2021 06:04:19 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 772BA61875 for ; Thu, 30 Sep 2021 06:04:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 772BA61875 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:33794 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVpB4-00069O-KG for qemu-devel@archiver.kernel.org; Thu, 30 Sep 2021 02:04:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47510) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVosc-0001kh-EK; Thu, 30 Sep 2021 01:45:14 -0400 Received: from gandalf.ozlabs.org ([2404:9400:2:0:216:3eff:fee2:21ea]:42303) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVosa-0003d2-KU; Thu, 30 Sep 2021 01:45:14 -0400 Received: by gandalf.ozlabs.org (Postfix, from userid 1007) id 4HKhyR2ZVsz4xbs; Thu, 30 Sep 2021 15:44:31 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gibson.dropbear.id.au; s=201602; t=1632980671; bh=RKkrBAvWpriOvj6OUZtroTkffBYfcp6kdl9+kKE4RZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j9HnS5afKJwWWjsoEhXvmyBUrFn0m6Y+rOmVTR5ESe8LZ5cBtIiAwEL2HAMQeXqzo hGGo6Rd7ftcK/QoZnQK55P7dlWLMSUASzmUJG4aMvkwRvJ1yI7Pe942/yH08WSyhks rF/qTKQ+oT4u+o7eHM7Yz4tY78nwcqVlWm7Diimk= From: David Gibson To: peter.maydell@linaro.org Subject: [PULL 24/44] target/ppc: Check privilege level based on PSR and LPCR[HR] in tlbie[l] Date: Thu, 30 Sep 2021 15:44:06 +1000 Message-Id: <20210930054426.357344-25-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210930054426.357344-1-david@gibson.dropbear.id.au> References: <20210930054426.357344-1-david@gibson.dropbear.id.au> MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2:0:216:3eff:fee2:21ea; envelope-from=dgibson@gandalf.ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no 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: Matheus Ferst , Daniel Henrique Barboza , mark.cave-ayland@ilande.co.uk, qemu-devel@nongnu.org, groug@kaod.org, hpoussin@reactos.org, clg@kaod.org, qemu-ppc@nongnu.org, philmd@redhat.com, David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Matheus Ferst PowerISA v3.0B made tlbie[l] hypervisor privileged when PSR=0 and HR=1. To allow the check at translation time, we'll use the HR bit of LPCR to check the MMU mode instead of the PATE.HR. Signed-off-by: Matheus Ferst Message-Id: <20210917114751.206845-3-matheus.ferst@eldorado.org.br> Reviewed-by: Daniel Henrique Barboza Signed-off-by: David Gibson --- target/ppc/translate.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 9af1624ad2..b985e9e55b 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -5517,7 +5517,15 @@ static void gen_tlbiel(DisasContext *ctx) #if defined(CONFIG_USER_ONLY) GEN_PRIV; #else - CHK_SV; + bool psr = (ctx->opcode >> 17) & 0x1; + + if (ctx->pr || (!ctx->hv && !psr && ctx->hr)) { + /* + * tlbiel is privileged except when PSR=0 and HR=1, making it + * hypervisor privileged. + */ + GEN_PRIV; + } gen_helper_tlbie(cpu_env, cpu_gpr[rB(ctx->opcode)]); #endif /* defined(CONFIG_USER_ONLY) */ @@ -5529,12 +5537,20 @@ static void gen_tlbie(DisasContext *ctx) #if defined(CONFIG_USER_ONLY) GEN_PRIV; #else + bool psr = (ctx->opcode >> 17) & 0x1; TCGv_i32 t1; - if (ctx->gtse) { - CHK_SV; /* If gtse is set then tlbie is supervisor privileged */ - } else { - CHK_HV; /* Else hypervisor privileged */ + if (ctx->pr) { + /* tlbie is privileged... */ + GEN_PRIV; + } else if (!ctx->hv) { + if (!ctx->gtse || (!psr && ctx->hr)) { + /* + * ... except when GTSE=0 or when PSR=0 and HR=1, making it + * hypervisor privileged. + */ + GEN_PRIV; + } } if (NARROW_MODE(ctx)) {