From nobody Sat Sep 21 06:51:04 2024 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=1704971284; cv=none; d=zohomail.com; s=zohoarc; b=J9NrkLXfj4fpH8YgAyIOlzg5H6Lm1HsztYYa9CY9uetv+o9OGHuPhk/td8kRvdfrOVOSSiXxBp3tJdvjZRuYtf9KaH6VeauZMF4OxUSMWmtg2G9JWeGJII07LxzPkpiFbOMRAqNYFriF7bQ+WTcoNgYRdJOoAA7oOcs4t39NC4Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1704971284; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=UXRcXu0KHC3KDr0EhA03orQJ3pMJ3fXxZkZHJokxdik=; b=flhGFOgSh7s9ySC4n8EQd9UxFG0sGF8NiqR3ISXi/z03lzfRnukObRODARCrmLyn4fU2SCZiQ5Wr8/dEb9JQjbbttBuARpKpwGy6kPUtRvgw3bG2flOgrkfLbW/A27c1mwzSKl27ecFtYTnG7BCPvo49Upwnh7Lx+xBocln46J0= 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 1704971284146243.94669723986294; Thu, 11 Jan 2024 03:08:04 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rNssS-0001RZ-0d; Thu, 11 Jan 2024 06:05:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rNss8-0001LS-1S for qemu-devel@nongnu.org; Thu, 11 Jan 2024 06:05:16 -0500 Received: from mail-wm1-x331.google.com ([2a00:1450:4864:20::331]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rNss5-0004PV-Oe for qemu-devel@nongnu.org; Thu, 11 Jan 2024 06:05:15 -0500 Received: by mail-wm1-x331.google.com with SMTP id 5b1f17b1804b1-40e6275e9beso161175e9.1 for ; Thu, 11 Jan 2024 03:05:13 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id v30-20020adf8b5e000000b0033690139ea5sm951323wra.44.2024.01.11.03.05.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jan 2024 03:05:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704971112; x=1705575912; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=UXRcXu0KHC3KDr0EhA03orQJ3pMJ3fXxZkZHJokxdik=; b=dRBZzVMB+9dNxeAO2D3vJC6zdAMOnaI2673gYwFxehWyznFenB8XUBqyCY0nVSTXgZ st4L/Ivv6L5wU/M3Q9rN7TcJ9CmvwZYgwPA8rnUg6+XjYx2vwZnIaLgH84+kRaFj6FZP MKthQIOtYw+LKcs9lYie0B48tLI82yOAvjHKqRPfOXUO2iOv5EHkBZE5pGSgjSp4SdMe 8TyYUjhf7by6pn/oFg1Qc90pmw9LEHIsKpFi23wpFk014NX4pyflWOqYw+N9UdUXswnD ghBWp/MAim0W+rBYbYm0hze2cwW9pO/Y0BJswa1/M1ck5uzr9lIB3AshwsZ9zfnnFMHM eRog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704971112; x=1705575912; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UXRcXu0KHC3KDr0EhA03orQJ3pMJ3fXxZkZHJokxdik=; b=IRugoXmcsosxJZme8O8nPNF2cyFGu/oxFwBqN4NbOFIl61EOT/SDN3URDZ3TD3pBnB m/hpqCetV80+N6Z6n+JAczM5F5Wkm70Q0d04xuA0sA7kXo6dWnH0HydA9hzAzV+q27XD itHWQk/8JUyTHw1LMlB4XkmazLrJJEXNv5xA5+Ew/R9dxbYU0gjPlY6PBdCgUxRqTaz0 /3zNwbE7V5lpzHXVvXk0x8AwP1g11N8NuBpRLwfJI+6KtuABkRv7wmqrZh45umDyesO+ IOZAwt0ns0zxDdqhYdcuI2n8blajhpChmKhqI79m5pTocTaruywpvJbY1QfOHwHjBjfD X4TA== X-Gm-Message-State: AOJu0YyK553gzmWNuquLreVvFScWH87+/jQ1GrEeezAUI268tT6wS+8V nPfE+M2P3dg2D5vGSK2nsUp6y0PCw+ampLkMLYO7Iql37ng= X-Google-Smtp-Source: AGHT+IGhLeZ85eX7BmK7/YcJoQrCUIwxLBYXdFQtyj5TzunLUqfEmcc6Hyvef/A5Z/xoZSHcGTL1DA== X-Received: by 2002:a05:600c:4f16:b0:40c:2394:1796 with SMTP id l22-20020a05600c4f1600b0040c23941796mr331979wmq.174.1704971112098; Thu, 11 Jan 2024 03:05:12 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 12/41] target/arm: Enable trapping of ERET for FEAT_NV Date: Thu, 11 Jan 2024 11:04:36 +0000 Message-Id: <20240111110505.1563291-13-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240111110505.1563291-1-peter.maydell@linaro.org> References: <20240111110505.1563291-1-peter.maydell@linaro.org> MIME-Version: 1.0 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::331; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x331.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1704971284706100003 Content-Type: text/plain; charset="utf-8" When FEAT_NV is turned on via the HCR_EL2.NV bit, ERET instructions are trapped, with the same syndrome information as for the existing FEAT_FGT fine-grained trap (in the pseudocode this is handled in AArch64.CheckForEretTrap()). Rename the DisasContext and tbflag bits to reflect that they are no longer exclusively for FGT traps, and set the tbflag bit when FEAT_NV is enabled as well as when the FGT is enabled. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Tested-by: Miguel Luis --- target/arm/cpu.h | 2 +- target/arm/tcg/translate.h | 4 ++-- target/arm/tcg/hflags.c | 11 ++++++++++- target/arm/tcg/translate-a64.c | 6 +++--- 4 files changed, 16 insertions(+), 7 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 8c3ca2e2319..8da6bfda228 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -3232,7 +3232,7 @@ FIELD(TBFLAG_A64, PSTATE_ZA, 23, 1) FIELD(TBFLAG_A64, SVL, 24, 4) /* Indicates that SME Streaming mode is active, and SMCR_ELx.FA64 is not. = */ FIELD(TBFLAG_A64, SME_TRAP_NONSTREAMING, 28, 1) -FIELD(TBFLAG_A64, FGT_ERET, 29, 1) +FIELD(TBFLAG_A64, TRAP_ERET, 29, 1) FIELD(TBFLAG_A64, NAA, 30, 1) FIELD(TBFLAG_A64, ATA0, 31, 1) =20 diff --git a/target/arm/tcg/translate.h b/target/arm/tcg/translate.h index 3c3bb3431ad..8c84377003c 100644 --- a/target/arm/tcg/translate.h +++ b/target/arm/tcg/translate.h @@ -138,10 +138,10 @@ typedef struct DisasContext { bool mve_no_pred; /* True if fine-grained traps are active */ bool fgt_active; - /* True if fine-grained trap on ERET is enabled */ - bool fgt_eret; /* True if fine-grained trap on SVC is enabled */ bool fgt_svc; + /* True if a trap on ERET is enabled (FGT or NV) */ + bool trap_eret; /* True if FEAT_LSE2 SCTLR_ELx.nAA is set */ bool naa; /* diff --git a/target/arm/tcg/hflags.c b/target/arm/tcg/hflags.c index a6ebd7571a3..560fb7964ab 100644 --- a/target/arm/tcg/hflags.c +++ b/target/arm/tcg/hflags.c @@ -169,6 +169,7 @@ static CPUARMTBFlags rebuild_hflags_a64(CPUARMState *en= v, int el, int fp_el, CPUARMTBFlags flags =3D {}; ARMMMUIdx stage1 =3D stage_1_mmu_idx(mmu_idx); uint64_t tcr =3D regime_tcr(env, mmu_idx); + uint64_t hcr =3D arm_hcr_el2_eff(env); uint64_t sctlr; int tbii, tbid; =20 @@ -285,13 +286,21 @@ static CPUARMTBFlags rebuild_hflags_a64(CPUARMState *= env, int el, int fp_el, if (arm_fgt_active(env, el)) { DP_TBFLAG_ANY(flags, FGT_ACTIVE, 1); if (FIELD_EX64(env->cp15.fgt_exec[FGTREG_HFGITR], HFGITR_EL2, ERET= )) { - DP_TBFLAG_A64(flags, FGT_ERET, 1); + DP_TBFLAG_A64(flags, TRAP_ERET, 1); } if (fgt_svc(env, el)) { DP_TBFLAG_ANY(flags, FGT_SVC, 1); } } =20 + /* + * ERET can also be trapped for FEAT_NV. arm_hcr_el2_eff() takes care + * of "is EL2 enabled" and the NV bit can only be set if FEAT_NV is pr= esent. + */ + if (el =3D=3D 1 && (hcr & HCR_NV)) { + DP_TBFLAG_A64(flags, TRAP_ERET, 1); + } + if (cpu_isar_feature(aa64_mte, env_archcpu(env))) { /* * Set MTE_ACTIVE if any access may be Checked, and leave clear diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index f3b5b9124d0..0f30e71f9bd 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -1606,7 +1606,7 @@ static bool trans_ERET(DisasContext *s, arg_ERET *a) if (s->current_el =3D=3D 0) { return false; } - if (s->fgt_eret) { + if (s->trap_eret) { gen_exception_insn_el(s, 0, EXCP_UDEF, syn_erettrap(0), 2); return true; } @@ -1633,7 +1633,7 @@ static bool trans_ERETA(DisasContext *s, arg_reta *a) return false; } /* The FGT trap takes precedence over an auth trap. */ - if (s->fgt_eret) { + if (s->trap_eret) { gen_exception_insn_el(s, 0, EXCP_UDEF, syn_erettrap(a->m ? 3 : 2),= 2); return true; } @@ -13980,7 +13980,7 @@ static void aarch64_tr_init_disas_context(DisasCont= extBase *dcbase, dc->pstate_il =3D EX_TBFLAG_ANY(tb_flags, PSTATE__IL); dc->fgt_active =3D EX_TBFLAG_ANY(tb_flags, FGT_ACTIVE); dc->fgt_svc =3D EX_TBFLAG_ANY(tb_flags, FGT_SVC); - dc->fgt_eret =3D EX_TBFLAG_A64(tb_flags, FGT_ERET); + dc->trap_eret =3D EX_TBFLAG_A64(tb_flags, TRAP_ERET); dc->sve_excp_el =3D EX_TBFLAG_A64(tb_flags, SVEEXC_EL); dc->sme_excp_el =3D EX_TBFLAG_A64(tb_flags, SMEEXC_EL); dc->vl =3D (EX_TBFLAG_A64(tb_flags, VL) + 1) * 16; --=20 2.34.1