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Mon, 09 Mar 2026 15:00:53 -0700 (PDT) From: Gabriel Brookman Date: Mon, 09 Mar 2026 17:59:43 -0400 Subject: [PATCH v4 11/13] docs: add MTE4 features to docs MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260309-feat-mte4-v4-11-daaf0375620d@gmail.com> References: <20260309-feat-mte4-v4-0-daaf0375620d@gmail.com> In-Reply-To: <20260309-feat-mte4-v4-0-daaf0375620d@gmail.com> To: qemu-devel@nongnu.org Cc: Peter Maydell , Gustavo Romero , Richard Henderson , qemu-arm@nongnu.org, Laurent Vivier , Pierrick Bouvier , Gabriel Brookman X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1773093641; l=2273; i=brookmangabriel@gmail.com; s=20251009; h=from:subject:message-id; bh=SKqzsgfGBjCCy0M3W5MnUoYPUiZpeZ5BL7yzFuAZ0j8=; b=8zvGzJ2A+yT2c3VP0Z73umKrnCZTZwg1+N0ThhzcQ6U2ksnjgoO6iqVF5V1nidkqa3aWpNVvr O1SPUeacE6jASOOrf5bIFHoUmgjNdRNHy48vkL3LTfXmmTY1tm74Xv9 X-Developer-Key: i=brookmangabriel@gmail.com; a=ed25519; pk=m9TtPDal6WzoHNnQiHHKf8dTrv3DUCPUUTujuo8vNrw= 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::1130; envelope-from=brookmangabriel@gmail.com; helo=mail-yw1-x1130.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=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: qemu development 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 @gmail.com) X-ZM-MESSAGEID: 1773093771334158500 The implemented MTE4 features are now present in docs/system/arm/emulation.rst Signed-off-by: Gabriel Brookman Reviewed-by: Richard Henderson --- docs/system/arm/emulation.rst | 5 +++++ target/arm/tcg/cpu64.c | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst index 7787691853..0f529ba6bb 100644 --- a/docs/system/arm/emulation.rst +++ b/docs/system/arm/emulation.rst @@ -109,6 +109,11 @@ the following architecture extensions: - FEAT_MTE3 (MTE Asymmetric Fault Handling) - FEAT_MTE_ASYM_FAULT (Memory tagging asymmetric faults) - FEAT_MTE_ASYNC (Asynchronous reporting of Tag Check Fault) +- FEAT_MTE_PERM (NoTagAccess memory attribute) +- FEAT_MTE_TAGGED_FAR (Full address reporting of Tag Check Fault) +- FEAT_MTE_STORE_ONLY (Store-only tag checking) +- FEAT_MTE_CANONICAL_TAGS (Canonical tag checking) +- FEAT_MTE_NO_ADDRESS_TAGS (Address tagging disabled) - FEAT_NMI (Non-maskable Interrupt) - FEAT_NV (Nested Virtualization) - FEAT_NV2 (Enhanced nested virtualization support) diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c index 84857fb706..7838bb52ea 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 =3D FIELD_DP64(t, ID_AA64PFR1, CSV2_FRAC, 0); /* FEAT_CSV2_3 */ t =3D FIELD_DP64(t, ID_AA64PFR1, NMI, 1); /* FEAT_NMI */ t =3D FIELD_DP64(t, ID_AA64PFR1, GCS, 1); /* FEAT_GCS */ + t =3D FIELD_DP64(t, ID_AA64PFR1, + MTEX, 1); /* FEAT_MTE_NO_ADDRESS_TAGS + FEAT_MTE_CANONICAL_T= AGS */ SET_IDREG(isar, ID_AA64PFR1, t); =20 + t =3D GET_IDREG(isar, ID_AA64PFR2); + t =3D FIELD_DP64(t, ID_AA64PFR2, MTEFAR, 1); /* FEAT_MTE_TAGGED_FAR= */ + t =3D FIELD_DP64(t, ID_AA64PFR2, MTESTOREONLY, 1); /* FEAT_MTE_STORE= _ONLY */ + t =3D FIELD_DP64(t, ID_AA64PFR2, MTEPERM, 1); /* FEAT_MTE_PERM */ + SET_IDREG(isar, ID_AA64PFR2, t); + t =3D GET_IDREG(isar, ID_AA64MMFR0); t =3D FIELD_DP64(t, ID_AA64MMFR0, PARANGE, 6); /* FEAT_LPA: 52 bits */ t =3D FIELD_DP64(t, ID_AA64MMFR0, TGRAN16, 1); /* 16k pages supporte= d */ --=20 2.52.0