From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5D04BCCFA1A for ; Wed, 12 Nov 2025 00:53:00 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vIz56-0004R8-6p; Tue, 11 Nov 2025 19:51:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vIz51-0004N6-Dx for qemu-devel@nongnu.org; Tue, 11 Nov 2025 19:51:23 -0500 Received: from mail-qv1-xf29.google.com ([2607:f8b0:4864:20::f29]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1vIz4y-0005o1-FR for qemu-devel@nongnu.org; Tue, 11 Nov 2025 19:51:23 -0500 Received: by mail-qv1-xf29.google.com with SMTP id 6a1803df08f44-882390f7952so2941456d6.3 for ; Tue, 11 Nov 2025 16:51:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1762908679; x=1763513479; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=X7xBSB+pMgbppGGcunAU3mgJo+IlSAXE/W29CJIZftg=; b=Qg6v7nbuS47pswlzsi+sHQKbI70f5f9f2vxPSh2n6RDe8fD7DOTVqVo0WONPledWcC 4D9lg/cINScAeegBhd22S1AHjGzdsUysaSCAMQ+pbt6S//pbpamFdhelrcoSgV9ljvTG hXpZ08T99p0HBVnMBm+Mcq5Ld2x4nRhYIQGtCK6zMlllk5OPFPkrfgRj1jfYfZp7w1Pi dO1mMQULDHC5Ncmj8PXNZ09NdLkDVKz2cJrHlmByH3xEECxHMxVegMZ124UwO6XTwVXg I390226h0mQ2UDchGuhwxkN/dKMtYbWrJPv5+if32ImKCmIHNIguWWc3jlAY9lA8R1LS bAVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762908679; x=1763513479; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=X7xBSB+pMgbppGGcunAU3mgJo+IlSAXE/W29CJIZftg=; b=T7gH51Bjl8U4c8z0kH+m6sMvrCpdoeSxI78axslaWpSicbXgQJpK3pZDWWTDZwa1en MR9X9b/CTHOcwAd0jQ2AAPY6gbMWRLTtDV9h97fG/4DT6i8upIYmwAbncIXepNfvW2n3 WHovJ3SwdbDGxA/qSpn3IYhz0RFes3hd3H5HOU5uSsrTCS80jk04MMcMEq55m3lgveBq 6ZxKLCii7iTMBRHVXRaRtRRVUeqwxI1n5azcHK6tmMm/KE1qq1bndy/DadCgW2WRGqAC FTEU9df/I14/F2nsATKdZ9nIqqEQ0L8YQYLF3ee0Rt/EaxGl+s5iCc3mejvGN3ie5loL +SQg== X-Gm-Message-State: AOJu0YwOiVNlY1DBr7J4KKCv+JgMKyBHTig6dibRvwOfuGJXcQQf1Los lYyYvzivtOyT7DvMH2PaHR/bwWGdfLd1Pw2CI5U9bGdYgyh2O5I+PxPS X-Gm-Gg: ASbGnctPo5ZwL5anplaiCEaZyV+OTYqhS2eAK1Q0MV9yma3wrRVz1nihMf0dlKPGTfO EZv2avfZqFxXfaJqyTf5w/jre/aMRtH3uUPIwt3Cgz7Ebz3daWVPStgePiBCDaURRDjsWxo70tU AufkB0yCm3iRF/QUdoCCaGDDpA+FEJxL2e55OOIwt9u5gp7TovK+9exyvsJgJeGAILHzMs1dnPO TBJ/RfsCIKqPU9kiHkuXCfovOcRQDktOdm9FgKe0DAfSoGYcFTttqEfa+Cd+kBQISerlL3kVDll YirTRNESCqH0egh0OxJnJMaXZVkreIeW69N36opMNCpzEiqky+sDc5vTazS5XRcwMFR+bul9pIX VByaNs6PmE9/x9Kg7mfRijN2B8DOYMEzlb3YwTPomJ1ZGqD6+S83CeqHO6iREmpRXsEuhGcKDm6 EWiBZp8eiA X-Google-Smtp-Source: AGHT+IGyBmMScafPAT1oRAldKXh5lhhxZRTw/ZrIFENb7Bz2nho9FEF7+KJg0W8zOwkwf1aRI7f4iA== X-Received: by 2002:a05:6214:202c:b0:882:6d42:53a7 with SMTP id 6a1803df08f44-88271a221c7mr23581826d6.40.1762908678866; Tue, 11 Nov 2025 16:51:18 -0800 (PST) Received: from [10.0.0.22] ([185.213.193.149]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8823892a79fsm81445096d6.4.2025.11.11.16.51.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Nov 2025 16:51:18 -0800 (PST) From: Gabriel Brookman Date: Tue, 11 Nov 2025 19:50:50 -0500 Subject: [PATCH RFC 1/5] target/arm: explicitly disable MTE4 for max MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251111-feat-mte4-v1-1-72ef5cf276f9@gmail.com> References: <20251111-feat-mte4-v1-0-72ef5cf276f9@gmail.com> In-Reply-To: <20251111-feat-mte4-v1-0-72ef5cf276f9@gmail.com> To: qemu-devel@nongnu.org Cc: Peter Maydell , Gustavo Romero , qemu-arm@nongnu.org, Gabriel Brookman X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1762908676; l=1511; i=brookmangabriel@gmail.com; s=20251009; h=from:subject:message-id; bh=XGiHb/C0NusSmxgmrJIRVRwNagLzEUYEbrI5ObCYhAo=; b=vNVg3HOCbIitlYuqqVZb4QBG8VF9TmVXKXkJ+40F+VXQFquSYRafgBUQIg54MHCJX/jagCgqw w4PTpltCi64CGKLLCXTl7Kt1L6n+ds3B3fT5pIb6snpJACiN0z4ODJL X-Developer-Key: i=brookmangabriel@gmail.com; a=ed25519; pk=m9TtPDal6WzoHNnQiHHKf8dTrv3DUCPUUTujuo8vNrw= Received-SPF: pass client-ip=2607:f8b0:4864:20::f29; envelope-from=brookmangabriel@gmail.com; helo=mail-qv1-xf29.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, FREEMAIL_FROM=0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Previously, the bits used to advertise the various MTE4 features were not explicitly set for -cpu max. This commit calls out these bits and explicitly unsets them. At the end of the patch series, a second commit will explicitly set all of them. Signed-off-by: Gabriel Brookman --- target/arm/tcg/cpu64.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c index 6871956382..6688b78bb8 100644 --- a/target/arm/tcg/cpu64.c +++ b/target/arm/tcg/cpu64.c @@ -1281,8 +1281,16 @@ void aarch64_max_tcg_initfn(Object *obj) t = FIELD_DP64(t, ID_AA64PFR1, CSV2_FRAC, 0); /* FEAT_CSV2_3 */ t = FIELD_DP64(t, ID_AA64PFR1, NMI, 1); /* FEAT_NMI */ t = FIELD_DP64(t, ID_AA64PFR1, GCS, 1); /* FEAT_GCS */ + t = FIELD_DP64(t, ID_AA64PFR1, + MTEX, 0); /* FEAT_MTE_NO_ADDRESS_TAGS + FEAT_MTE_CANONICAL_TAGS */ SET_IDREG(isar, ID_AA64PFR1, t); + t = GET_IDREG(isar, ID_AA64PFR2); + t = FIELD_DP64(t, ID_AA64PFR2, MTEFAR, 0); /* FEAT_MTE_TAGGED_FAR */ + t = FIELD_DP64(t, ID_AA64PFR2, MTESTOREONLY, 0); /* FEAT_MTE_STORE_ONLY */ + t = FIELD_DP64(t, ID_AA64PFR2, MTEPERM, 0); /* FEAT_MTE_PERM */ + SET_IDREG(isar, ID_AA64PFR2, t); + t = GET_IDREG(isar, ID_AA64MMFR0); t = FIELD_DP64(t, ID_AA64MMFR0, PARANGE, 6); /* FEAT_LPA: 52 bits */ t = FIELD_DP64(t, ID_AA64MMFR0, TGRAN16, 1); /* 16k pages supported */ -- 2.51.2