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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id l138sm5076218oih.32.2020.10.08.09.22.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Oct 2020 09:22:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=QyvlAwVml9YHe9kwFtSW/ZPwkyIj+P8DM/oa1e0Xc6w=; b=rwtKfjCK8hje9Jvfy+6vADhrgbNjBCbTVp2UQ4VX5jGFO0aLke+PVfEOoZvLcvEeFr D8shsBeyQMPc/nmwiD5jv/2iU83PioDcTHNPrgGRmMcvxPaqsZOG4bAv3SV6nAD/fLXl 2uOV+mMJ8o93WZwQsOwRC8GdPC0o2nFO4fC4X+Fe1x6A1KfJ3Wxr/SJSgqBNjAiLUP10 FUyriBOzSwUi1k9QkPSq2SsR44oi+JpmXGbvz/UEsCwfYWARtbpsSTlIQUgtoP1h5H0H zRXzWA90Z4XINVKxhxpkzeH90+iygLpoUuTRmOXviOuVUdOAPylm2Z11pKkDFdVnUGKl 6L/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=QyvlAwVml9YHe9kwFtSW/ZPwkyIj+P8DM/oa1e0Xc6w=; b=ucj8hm05D/jCzavwzCmzCRYp0jSPe3B8tHLhuz2p09+9kx13YVCbFDxOwZPvFvsklh 0KradD43Xf1aszhFVM0jbZZnQddxelRXepPF4djT4pCB25KAO/YT0/JKmeNViQ3dzn8v d+k37MfDND1VshTlu+nhu9wleH5prw8/0byXKBBuZ0ioSl65P+PawtLBDnlqtSAbqUOa djfnL0DTHAI1LGw6ZuC6tb6TNTOYf9nEegDOQuzGVdmuk2ulLv+WJrdk9FwQq3TK+RBp HaWfdjIulpXzHMyPGvaPWVfIqTwe+0V7rDvqgvB5xzdsOiNTDCP42IS8x+9i0c8AwcFW gUCQ== X-Gm-Message-State: AOAM533vdvhcctN+Od5m/VD0h/0+Ma4VshFCujdbimoBMfAbaUe38lG+ d2guSUtkG52Jex3UFPNr8DzVHZq4gAprWRzO X-Google-Smtp-Source: ABdhPJzQhkhsRl3XSjyTXcGrDBvYwzxtMZRN+TGpTJnBcfXLl8XaPUKM4ojnrMpLcnxYwp4ojgwcyg== X-Received: by 2002:aca:38c1:: with SMTP id f184mr5219577oia.145.1602174123111; Thu, 08 Oct 2020 09:22:03 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 3/3] target/arm: Ignore HCR_EL2.ATA when {E2H,TGE} != 11 Date: Thu, 8 Oct 2020 11:21:55 -0500 Message-Id: <20201008162155.161886-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201008162155.161886-1-richard.henderson@linaro.org> References: <20201008162155.161886-1-richard.henderson@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=2607:f8b0:4864:20::244; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x244.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org, vincenzo.frascino@arm.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Unlike many other bits in HCR_EL2, the description for this bit does not contain the phrase "if ... this field behaves as 0 for all purposes other than", so do not squash the bit in arm_hcr_el2_eff. Instead, replicate the E2H+TGE test in the two places that require it. Reported-by: Vincenzo Frascino Signed-off-by: Richard Henderson Reviewed-by: Vincenzo Frascino Tested-by: Vincenzo Frascino --- target/arm/internals.h | 9 +++++---- target/arm/helper.c | 9 +++++---- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/target/arm/internals.h b/target/arm/internals.h index ae99725d2b..5460678756 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1252,10 +1252,11 @@ static inline bool allocation_tag_access_enabled(CP= UARMState *env, int el, && !(env->cp15.scr_el3 & SCR_ATA)) { return false; } - if (el < 2 - && arm_feature(env, ARM_FEATURE_EL2) - && !(arm_hcr_el2_eff(env) & HCR_ATA)) { - return false; + if (el < 2 && arm_feature(env, ARM_FEATURE_EL2)) { + uint64_t hcr =3D arm_hcr_el2_eff(env); + if (!(hcr & HCR_ATA) && (!(hcr & HCR_E2H) || !(hcr & HCR_TGE))) { + return false; + } } sctlr &=3D (el =3D=3D 0 ? SCTLR_ATA0 : SCTLR_ATA); return sctlr !=3D 0; diff --git a/target/arm/helper.c b/target/arm/helper.c index cd0779ff5f..0620572e44 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -6874,10 +6874,11 @@ static CPAccessResult access_mte(CPUARMState *env, = const ARMCPRegInfo *ri, { int el =3D arm_current_el(env); =20 - if (el < 2 && - arm_feature(env, ARM_FEATURE_EL2) && - !(arm_hcr_el2_eff(env) & HCR_ATA)) { - return CP_ACCESS_TRAP_EL2; + if (el < 2 && arm_feature(env, ARM_FEATURE_EL2)) { + uint64_t hcr =3D arm_hcr_el2_eff(env); + if (!(hcr & HCR_ATA) && (!(hcr & HCR_E2H) || !(hcr & HCR_TGE))) { + return CP_ACCESS_TRAP_EL2; + } } if (el < 3 && arm_feature(env, ARM_FEATURE_EL3) && --=20 2.25.1