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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-427d2a8e420sm14059315e9.35.2024.07.18.06.20.30 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Jul 2024 06:20:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1721308831; x=1721913631; 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=wNvxFR8UOIk9oR5FQocJEptc0zyJlU6CCgtVFEcW6V0=; b=CY3gEDc2u2gGFXgCgKCBko4guwrKfxqbuguDPNj67Q1B6rHSAhK/OWEmEgRce2jt3F D+nlias1FoViifEQBs+txtRLrG/pEhBZqGIPYVJ6PFRYTuaN4akbNTY6+gQ3BhAFidAA aHlRSG+GzcSSgFrkTy/7jDPvfYORUbhKoJJDSvNwrDR16hemmNOSjtvmEZZ/cGEj59d0 OVlVQZ3eD7UsjF6vhWFuFoNxeR4TUENSss+Rje38grGf/zzdho9vNG8p9JHM3ea3O300 hMjkyzHt+CMqEU06Umq3B0auKclhgxBBW+D///wYMSUnni/9QLoUvfUc/XZl1FG5Pusk +mFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721308831; x=1721913631; 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=wNvxFR8UOIk9oR5FQocJEptc0zyJlU6CCgtVFEcW6V0=; b=ZH2ODQLTXF925/v4QDe7Ck+CZMS1c7LyowfCogS5dpQnA2MV1BfmzCSmXZgPf/YV05 Nxfif/o3r9nRLgIHhJ/hXxZv/dlkY5CIhA9meC8SOklaegxsm0eyubQc0NIiE1rXbqvA hrkdVIq2Q60qaDIqBZctjyvfjxqgZbAtCoGtYlXMOEO9ILeoOtAzAkspnhaykk+kqXLO ztVM9dIna+6EkGlvG2RkiCU8QfAq+fDLHMsJXhktFmnKT2XsK0Atcxvy7RM8sbVsh1LY 0DSrde9YiVa5VemFqU2w8Q6fXQcO3iNhOWtfu1P5vyJKlRQMfCcyTi/YIA9cvEyY0VdQ hpPA== X-Gm-Message-State: AOJu0YzjwUrTKlHUYlPELXgbs0pXoAKJaCzRDMVtSZrKtfQ3RQQZ07qe j3gB2xVYyh1JiOpBEHybQ789a1PFlQGMArKiO1LVMFWFJJl2JaiIqNChP2Lbsj6qojXA1SSHzJ7 m X-Google-Smtp-Source: AGHT+IF1xFutbpCa7uWIYfL4mMj3x/OouopRK7O0feOcm1g4amWNNgBixXbfyMQZV6c6klDrnYJxsQ== X-Received: by 2002:a05:600c:4588:b0:426:6861:a1ab with SMTP id 5b1f17b1804b1-427c2d10a58mr33497605e9.39.1721308831103; Thu, 18 Jul 2024 06:20:31 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 02/26] target/arm: LDAPR should honour SCTLR_ELx.nAA Date: Thu, 18 Jul 2024 14:20:04 +0100 Message-Id: <20240718132028.697927-3-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240718132028.697927-1-peter.maydell@linaro.org> References: <20240718132028.697927-1-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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x332.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 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1721308870953116300 Content-Type: text/plain; charset="utf-8" In commit c1a1f80518d360b when we added the FEAT_LSE2 relaxations to the alignment requirements for atomic and ordered loads and stores, we didn't quite get it right for LDAPR/LDAPRH/LDAPRB with no immediate offset. These instructions were handled in the old decoder as part of disas_ldst_atomic(), but unlike all the other insns that function decoded (LDADD, LDCLR, etc) these insns are "ordered", not "atomic", so they should be using check_ordered_align() rather than check_atomic_align(). Commit c1a1f80518d360b used check_atomic_align() regardless for everything in disas_ldst_atomic(). We then carried that incorrect check over in the decodetree conversion, where LDAPR/LDAPRH/LDAPRB are now handled by trans_LDAPR(). The effect is that when FEAT_LSE2 is implemented, these instructions don't honour the SCTLR_ELx.nAA bit and will generate alignment faults when they should not. (The LDAPR insns with an immediate offset were in disas_ldst_ldapr_stlr() and then in trans_LDAPR_i() and trans_STLR_i(), and have always used the correct check_ordered_align().) Use check_ordered_align() in trans_LDAPR(). Cc: qemu-stable@nongnu.org Fixes: c1a1f80518d360b ("target/arm: Relax ordered/atomic alignment checks = for LSE2") Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20240709134504.3500007-3-peter.maydell@linaro.org --- target/arm/tcg/translate-a64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 559a6cd799d..148be2826ec 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -3543,7 +3543,7 @@ static bool trans_LDAPR(DisasContext *s, arg_LDAPR *a) if (a->rn =3D=3D 31) { gen_check_sp_alignment(s); } - mop =3D check_atomic_align(s, a->rn, a->sz); + mop =3D check_ordered_align(s, a->rn, 0, false, a->sz); clean_addr =3D gen_mte_check1(s, cpu_reg_sp(s, a->rn), false, a->rn !=3D 31, mop); /* --=20 2.34.1