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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4319360cc2esm146835865e9.44.2024.10.29.08.10.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Oct 2024 08:10:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1730214652; x=1730819452; 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=f2QKx5PpJ0hXtnqWhwoUN1/2lKp8MIaOWL67xtGys9o=; b=E1Nyz3YmZGywQBNltH5GKjLZVLTJ1jNxOqrCRchR0IjdHTpXdbGzF2dsOmSoWoSA31 CM35yhzaZAfa56AjZK8xZzxwJKyt7FabY/1h0EAbCbU7FcWriZ6171pAXTr39baCqfxp h0Wiv9KSORtDGR8nda9z5+psxXZGi+dkY5SidjgJTem0a3bk6ujxYd/vLLF7mQgWneay ONLfgPFnf/xiLuYongMZMwu08Ff3I7vjjTSWR9HMD2iMzuRogKuN2KMsNisxCiMtgUZV FuJeElbbQtywcGcwp8Z8DjdHzxyFucvj70u34gfVWSkAbdzsrCTtdTtSQc1SYUqpWLMH xtyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730214652; x=1730819452; 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=f2QKx5PpJ0hXtnqWhwoUN1/2lKp8MIaOWL67xtGys9o=; b=t+LMNmMNN2OFLN4V3XMecTeCTrkwWX5WzABPxUnb8H6dQQq2ubrk9v9wbkFkclXEXo 7GMcNnMC1ax2pJI6UwbE8ok/P6lBF/3H5zWwhYvVFaYtWRCDNLbBuqUwwQBjbcXjoTeN E5uwyPsPaplNNP0CECHxtYA1XbtJPJOah99dWddXRdMYPxR31cEWp8yo9+vqbRXf4Fzp JQzw+Y3UlfFbwV95hNtyQk4ux1O8AYUZEA/inc8R8EAqjvYNMfe2/xkKBW6UrjsIb7eW G2YH62vMa9XWfdb7M6CUpKkOPpr+Fwi1UvAhwtoLOdAh1tH095la+xNUg0Q9n+m6nZV+ F/9A== X-Forwarded-Encrypted: i=1; AJvYcCUhMAIRXd9pXQcR/zR8G5QPDvLwtmlO6WDVBv+VFflXunKKlJhUgwHW8VLHtuckbfO+gxjVGYGi8RHj@nongnu.org X-Gm-Message-State: AOJu0YwGn0m9wrL80phJ73+F2xtQqx6Ne+6blzBE1gFoIQD/SD2kG+rG GEleHu90SVbpVSFFrbn+Z86U6ZTw1PxtW/M1COW1E+qQH+2mxNOyQb/gNAp+nBY= X-Google-Smtp-Source: AGHT+IE6Wsxffs1U0fP35sK4re6uBkFb3OJvbZUdFxO1gEBa/1SQH2NGXCKzJtzq2IsQs4gTj2qrJQ== X-Received: by 2002:a05:6512:e91:b0:536:54df:bffa with SMTP id 2adb3069b0e04-53b34c5f7e3mr5416157e87.45.1730214651888; Tue, 29 Oct 2024 08:10:51 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PULL 04/18] target/arm: Don't assert in regime_is_user() for E10 mmuidx values Date: Tue, 29 Oct 2024 15:10:34 +0000 Message-Id: <20241029151048.1047247-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241029151048.1047247-1-peter.maydell@linaro.org> References: <20241029151048.1047247-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::130; envelope-from=peter.maydell@linaro.org; helo=mail-lf1-x130.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1730214762380116600 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: Richard Henderson Reviewed-by: Alex Benn=C3=A9e Tested-by: Alex Benn=C3=A9e Message-id: 20241017172331.822587-1-peter.maydell@linaro.org --- 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