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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id m10-20020a056000174a00b0033ec9ddc638sm9596027wrf.31.2024.03.25.06.31.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 06:31:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1711373478; x=1711978278; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=UG7Md5ptENEJSsV0K7ydj7dMPAW9+5Dt7UXUOoP4TX0=; b=o+quYPS5M+MvXc44TmfQyDp5JG7Q38wEn5SJHK6j8MGsWwhnyxbJcoPeVhC8ZEtvZQ TN/LNXbREeFThWyp3L020tHiE1bVzWZASGQaIJrqVDF+I+s31qhN3rX6qBRYAPt2+J7T aGCG+2pgX8s6L6rrGQvzWjdKjKXxgwKEuO9mNrplqYzYioD697EMzjYfHJNen78ax5Rv IDGx5j9ALAkZfFmaMAQwqnsHcDoCEXA1LwztDQm/EV9smhVaSBwfcLFIjYqdJlg0JZ4J mizGrxzhjKmAM8okyEpDUh/I7Ddv7tEV8qhfMwO95cQwG+uHtnhE0OVb0I5oCDONonp1 nEow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711373478; x=1711978278; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=UG7Md5ptENEJSsV0K7ydj7dMPAW9+5Dt7UXUOoP4TX0=; b=eoqr2i3xUlCQxeGwjFhA+X5UPMJvw9/cnl3GUPsST6/HzlrtI5nNU6bQyU7RBj4E3R NZId2V4vWbv/0PPIvRuXqODjTjOSX9JrKjgnhTGk35eE1vlUn30B+9NKFGlO/9StQpFk c4XmKcYWY0ENg2NTFwsGceQKjNsz8Cpezh5t0fhnl917u5BNzWVG8x7cTxgl1m1lsXm+ HQkU/MhmAwA6+/XndhC0Cqmr8KtP2vjjFQOHw4YafvpLyGLK450WK3cXihiPklJ60ypV 5wDxbIAlx5B8XhplTQOiZPK2FgYMQuA7Eix90t70K09GvWQ0vauVtSchTH/RH9F4jWpc 4VDA== X-Gm-Message-State: AOJu0YzvCI8ModxwbZWyuHgt36c8zdzNi15F98Ht6EtAH1/HjO4XQ0Ne XJ0E8ycH6OTJpQuvZGBSmmucema2tiByIt0HKt0oEklg0+4tvbJZAn4bP6AlWrybCzyDX8fXsF/ S X-Google-Smtp-Source: AGHT+IFD24/odmixbK1LHstBWiwtzIVG9IZOYEIum3t7efXk7JAvN8hyLEvhprmp3x33+BdNOYHY8Q== X-Received: by 2002:a5d:4d07:0:b0:341:b4db:c8d6 with SMTP id z7-20020a5d4d07000000b00341b4dbc8d6mr4341397wrt.71.1711373477724; Mon, 25 Mar 2024 06:31:17 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org Subject: [PATCH for-9.0] target/arm: take HSTR traps of cp15 accesses to EL2, not EL1 Date: Mon, 25 Mar 2024 13:31:16 +0000 Message-Id: <20240325133116.2075362-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 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::42d; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42d.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=unavailable 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: 1711373520932100001 Content-Type: text/plain; charset="utf-8" The HSTR_EL2 register allows the hypervisor to trap AArch32 EL1 and EL0 accesses to cp15 registers. We incorrectly implemented this so they trap to EL1 when we detect the need for a HSTR trap at code generation time. (The check in access_check_cp_reg() which we do at runtime to catch traps from EL0 is correctly routing them to EL2.) Use the correct target EL when generating the code to take the trap. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2226 Fixes: 049edada5e93df ("target/arm: Make HSTR_EL2 traps take priority over = UNDEF-at-EL1") Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/tcg/translate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/tcg/translate.c b/target/arm/tcg/translate.c index c8a24706750..69585e6003d 100644 --- a/target/arm/tcg/translate.c +++ b/target/arm/tcg/translate.c @@ -4585,7 +4585,7 @@ static void do_coproc_insn(DisasContext *s, int cpnum= , int is64, tcg_gen_andi_i32(t, t, 1u << maskbit); tcg_gen_brcondi_i32(TCG_COND_EQ, t, 0, over.label); =20 - gen_exception_insn(s, 0, EXCP_UDEF, syndrome); + gen_exception_insn_el(s, 0, EXCP_UDEF, syndrome, 2); /* * gen_exception_insn() will set is_jmp to DISAS_NORETURN, * but since we're conditionally branching over it, we want --=20 2.34.1