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([2a10:d582:31e:0:df7:7499:aeed:c296]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-42abe62bf35sm32572495f8f.7.2025.11.12.01.21.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Nov 2025 01:21:25 -0800 (PST) From: Jim MacArthur To: qemu-devel@nongnu.org Cc: Jim MacArthur Subject: [PATCH 0/3] Basic ASID2 support Date: Wed, 12 Nov 2025 09:17:49 +0000 Message-ID: <20251112092048.450090-1-jim.macarthur@linaro.org> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=jim.macarthur@linaro.org; helo=mail-wr1-x431.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Enable the ID_AA64MMFR4_EL1 register, add the ASID2 field for cpu_max, then enable writes to FNG1, FNG0, and A2 bits of TCR2_EL1. Any change of ASID still causes a TLB flush. Jim MacArthur (3): target/arm: Enable ID_AA64MMFR4_EL1 register. target/arm: Enable ASID2 for cpu_max, allow writes to FNG1, FNG0, A2 tests: Add test for ASID2 and write/read of feature bits target/arm/cpu-features.h | 7 +++++ target/arm/cpu-sysregs.h.inc | 1 + target/arm/helper.c | 7 +++-- target/arm/tcg/cpu64.c | 4 +++ tests/tcg/aarch64/system/asid2.c | 53 ++++++++++++++++++++++++++++++++ 5 files changed, 70 insertions(+), 2 deletions(-) create mode 100644 tests/tcg/aarch64/system/asid2.c -- 2.43.0