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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43160692d8esm1709895e9.13.2024.10.17.10.23.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Oct 2024 10:23:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1729185813; x=1729790613; 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=Qz3v+9Z2w3tFod8iKILXk4rM9BDOry0+5vRT/wn8qqI=; b=dmqDajDiWalTlCq7vR61B+IWJ4d8qK2OnsVuZkShJp87s5K80P08zqBu0JpGKQa4eM AU4WC7MICiOmFhZrcbZ8o0F3l0iour2bH5/HcfYEAWI/36wQ6mwOJmf954CRvZnL1cXZ 5dsdttFeMYdrFSNMRoFcZntoI3ApBPx7VUTO0423G8mvGkOY4cxEfWVC/lcaiA5TeCgd +zxy9OetU0dPGl7TREOkWEn9hT5P5hzVQLlboTrbbFC19O6GrxkcioVVfQA0BGgd0gs9 IAfAg7aIUwzWBOoo4x4eAqgOTXB3N18jWVfVGPm582Dbq52dJcMRnZoELEC8oM/jK+nr biSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729185813; x=1729790613; 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=Qz3v+9Z2w3tFod8iKILXk4rM9BDOry0+5vRT/wn8qqI=; b=tRNFRMc+RcTLLtTAtPSZXdW5mvtc+LPJwUDGFnTK35BY+ykPBdkcwBOeXtwAXDv0Ms TTHFpPl97Hw0Smm6/IQSZ0vnOBkmk7KRq9xoXoMzIyvYA0T4IDydKJEltgVFF560ywdo rqgsH3SJsoQmDBOOTs6L4EBGHZTWSA4TqRqVKcOFiaeY5MB6yJx2JmDYwcTDBrqinmsU fu4+JQnxcK2uvZrJQyqT4ediFTzGGN8ANA5mXfk078NxOQCNzsZtEFqkX0B/YWoJ1O7U qkURNhXczXwCVdH2u5pLW9uvlTSv84G7Xfl3SGDtwNooE6O9W1bCW8pc7oKjsVq79VDk QoIw== X-Forwarded-Encrypted: i=1; AJvYcCXcq29owPtv0ulZm7nPNFzOXlEdt8ZzrWw/kgcGDg3Oa1lUUSJGzBybnkiQ4RNFqRgMI3ughb9yZgkn@nongnu.org X-Gm-Message-State: AOJu0YziiOZxBD43V1fYBnY9rl0jIVlwqT68dv+avMg/f4B+IH6gEzEg cjgmzHWZHDSTNFRRlvT2s+NLiGERQL0dEAN1fVxxyCd05PMA54BRlDgk4MU/sK8= X-Google-Smtp-Source: AGHT+IEgXLXDt78/GJ4XZXflNh1zC40dpYOEDy28CiKv9HwbZNmcb0lXvP1UV6SgSH1u/OtfQ0r+bA== X-Received: by 2002:a05:600c:1c2a:b0:431:53db:3d29 with SMTP id 5b1f17b1804b1-43153db4041mr45641395e9.18.1729185813130; Thu, 17 Oct 2024 10:23:33 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org Subject: [PATCH] target/arm: Don't assert in regime_is_user() for E10 mmuidx values Date: Thu, 17 Oct 2024 18:23:31 +0100 Message-Id: <20241017172331.822587-1-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::335; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x335.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: 1729185862597116600 Content-Type: text/plain; charset="utf-8" In regime_is_user() we assert if we're passed an ARMMMUIdx_E10_* mmuidx value. This used to make sense because we only used this function in ptw.c and would never use it on this kind of stage 1+2 mmuidx, only for an individual stage 1 or stage 2 mmuidx. However, when we implemented FEAT_E0PD we added a callsite in aa64_va_parameters(), which means this can now be called for stage 1+2 mmuidx values if the guest sets the TCG_ELX.{E0PD0,E0PD1} bits to enable use of the feature. This will then result in an assertion failure later, for instance on a TLBI operation: #6 0x00007ffff6d0e70f in g_assertion_message_expr (domain=3D0x0, file=3D0x55555676eeba "../../target/arm/internals.h", li= ne=3D978, func=3D0x555556771d48 <__func__.5> "regime_is_user", expr=3D) at ../../../glib/gtestutils.c:3279 #7 0x0000555555f286d2 in regime_is_user (env=3D0x555557f2fe00, mmu_idx=3DA= RMMMUIdx_E10_0) at ../../target/arm/internals.h:978 #8 0x0000555555f3e31c in aa64_va_parameters (env=3D0x555557f2fe00, va=3D18= 446744073709551615, mmu_idx=3DARMMMUIdx_E10_0, data=3Dtrue, el1_is_aa32=3Df= alse) at ../../target/arm/helper.c:12048 #9 0x0000555555f3163b in tlbi_aa64_get_range (env=3D0x555557f2fe00, mmuidx= =3DARMMMUIdx_E10_0, value=3D106721347371041) at ../../target/arm/helper.c:5= 214 #10 0x0000555555f317e8 in do_rvae_write (env=3D0x555557f2fe00, value=3D1067= 21347371041, idxmap=3D21, synced=3Dtrue) at ../../target/arm/helper.c:5260 #11 0x0000555555f31925 in tlbi_aa64_rvae1is_write (env=3D0x555557f2fe00, ri= =3D0x555557fbeae0, value=3D106721347371041) at ../../target/arm/helper.c:53= 02 #12 0x0000555556036f8f in helper_set_cp_reg64 (env=3D0x555557f2fe00, rip=3D= 0x555557fbeae0, value=3D106721347371041) at ../../target/arm/tcg/op_helper.= c:965 Since we do know whether these mmuidx values are for usermode or not, we can easily make regime_is_user() handle them: ARMMMUIdx_E10_0 is user, and the other two are not. Cc: qemu-stable@nongnu.org Fixes: e4c93e44ab103f ("target/arm: Implement FEAT_E0PD") Signed-off-by: Peter Maydell Reviewed-by: Alex Benn=C3=A9e Reviewed-by: Richard Henderson Tested-by: Alex Benn=C3=A9e --- target/arm/internals.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index 299a96a81a7..fd8f7c82aa3 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -963,6 +963,7 @@ static inline uint32_t regime_el(CPUARMState *env, ARMM= MUIdx mmu_idx) static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx) { switch (mmu_idx) { + case ARMMMUIdx_E10_0: case ARMMMUIdx_E20_0: case ARMMMUIdx_Stage1_E0: case ARMMMUIdx_MUser: @@ -972,10 +973,6 @@ static inline bool regime_is_user(CPUARMState *env, AR= MMMUIdx mmu_idx) return true; default: return false; - case ARMMMUIdx_E10_0: - case ARMMMUIdx_E10_1: - case ARMMMUIdx_E10_1_PAN: - g_assert_not_reached(); } } =20 --=20 2.34.1