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[2001:8b0:1d0:0:428d:5cff:fe57:1f7f]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4356996cecasm514207f8f.26.2026.01.15.10.55.12 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Jan 2026 10:55:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1768503314; x=1769108114; 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=MZSrvEIlk9r04onLNJkYuSgINfXXG+Ma+gvj4K7ywbE=; b=fkcDbNSUT6VYUFehoj2jqmYjEQw1aRsiGXFE0b56KX1DMAcY0zurowWZ+Sbl7J+cYM U9onx6AU4/0kU0D/ForlrvxtvwmE1aHHuTVuBcVxWQcZ8/jtmtdA2Ds7nl8fcMb1SWpm GNLKnyfRg2hL2ztPC8EzcY2fe158mGacuLmEmKL4PRmSkVDXXGmyQ9YEgSXNqIr0axcD qPm4rr1UlWYCedL2UVEU3EC7RaDsq17v5IP6MGn9y6vuc+4yMRPKfaTWQiwwo9RWzIoU Knm5YIhfFYMrer91408AcrirPBryY2InCUPplQaG9FL8suQRg0I3DWjwX+srBq2/1LQs Uuww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768503314; x=1769108114; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=MZSrvEIlk9r04onLNJkYuSgINfXXG+Ma+gvj4K7ywbE=; b=rqoCeI0+p47j5JSfVBAkUaXayW9zeVydWe2SiNxS+9U8K6R1fq2mTReGEOwFh8CMm9 1zvmsYq8djFhibNU/MAbppRgCuvT/OWbL2ZLanokQwfyXAlytL6mW/S4n1+yv1GWCbNL 5LYrHhH34bNBagfSwegJwVLxsA1h2U8xjvpfAN+7Pct+lFERCO3ewIw0s4hKtKVsPINr oWSk0sURn4elS4NY2wVBQG0Pqtc1HPRnE6ahY0Bc2O/xMDOYas87inh4OUZ0Xce6/2qD jXtr0dUwZe+/LYgRObj+ZKQ+EN/6j4fUymyhgehga3WVUYyFHnDY2Lv7wSJxjaY0zh6f 1cXA== X-Gm-Message-State: AOJu0YxIv7c7TvU9kPejRgHlcNIMkdvAxmZXSV257yH8/VtAWZxhvIyM qN7dRQaewn7Ydu5t5b79BUN0vKUrkUkARRpYcWfOnCxHOQFrwvyLsfuviMUsBASXlx+WlEMnE9q IcFZX X-Gm-Gg: AY/fxX5HCDGMU40vEBM1+Ykf0+k3TXSeoGeo20pSppBo0FWDvdTRhmiFq7nRsxJBkxp fbCp6zXkXCG2ZZ5K57u+JAzVutWjlFeF4Wu+nXLrFdzocyJyA/5bn2Pp7tTfCVZY6pbB1b7VVQo YRg5bV6xm+mVZ/kZacMi4Z4RAh/Ndgq0mPe2aOiYJzP2h7QeWLCmqliesabWgNJst6HeZBP449V fWT06nerXtbrvL0+z0pbz/sNisOSiiayRk9m+OLdPX7fhpAtVCH2QXB0X6zwa3myGET+P9nuXtk 1vAOFd580EAIAW29DuVxHDwvaVW7tXxshvL3cqUQz8yyNvkK8zHANMTLZEj69jsvatL9bC2cf1t qJ1UcLGahlFZk/biY35xXMFZ7QzNZET9b0a2wndKqzlYy8I/vl0oMkLDfCm7pI68CqCKc/j3bYV PpsaS+7FGQJhQlDELF7DG3ODO3L2vbOCyh+T4CfoZw1ygo+qEU4n4Kplpqxiv8dDDzh9sW61hXv xoTIv9mWD9WjoohO+7tY8vvrddhWhB/E3O7iS2Ib6g+Zw== X-Received: by 2002:a05:6000:2910:b0:42f:b3b9:874d with SMTP id ffacd0b85a97d-43569bc4a81mr456484f8f.37.1768503313727; Thu, 15 Jan 2026 10:55:13 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 05/25] tests: Add test for ASID2 and write/read of feature bits Date: Thu, 15 Jan 2026 18:54:47 +0000 Message-ID: <20260115185508.786428-6-peter.maydell@linaro.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260115185508.786428-1-peter.maydell@linaro.org> References: <20260115185508.786428-1-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 (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::436; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x436.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: 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 @linaro.org) X-ZM-MESSAGEID: 1768503350616158500 From: Jim MacArthur Test for presence of ASID2; if it is, check FNG1, FNG0, and A2 are writable, and read value shows the update. If not present, check these read as RES0. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Jim MacArthur Signed-off-by: Peter Maydell --- tests/tcg/aarch64/system/asid2.c | 76 ++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 tests/tcg/aarch64/system/asid2.c diff --git a/tests/tcg/aarch64/system/asid2.c b/tests/tcg/aarch64/system/as= id2.c new file mode 100644 index 0000000000..7d5466af34 --- /dev/null +++ b/tests/tcg/aarch64/system/asid2.c @@ -0,0 +1,76 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * + * ASID2 Feature presence and enabled TCR2_EL1 bits test + * + * Copyright (c) 2025 Linaro Ltd + * + */ + +#include +#include + +#define ID_AA64MMFR3_EL1 "S3_0_C0_C7_3" +#define ID_AA64MMFR4_EL1 "S3_0_C0_C7_4" +#define TCR2_EL1 "S3_0_C2_C0_3" + +int main() +{ + /* + * Test for presence of ASID2 and three feature bits enabled by it: + * https://developer.arm.com/documentation/109697/2025_09/Feature-desc= riptions/The-Armv9-5-architecture-extension + * Bits added are FNG1, FNG0, and A2. These should be RES0 if A2 is + * not enabled and read as the written value if A2 is enabled. + */ + + uint64_t out; + uint64_t idreg3; + uint64_t idreg4; + int tcr2_present; + int asid2_present; + + /* Mask is FNG1, FNG0, and A2 */ + const uint64_t feature_mask =3D (1ULL << 18 | 1ULL << 17 | 1ULL << 16); + const uint64_t in =3D feature_mask; + + asm("mrs %[idreg3], " ID_AA64MMFR3_EL1 "\n\t" + : [idreg3] "=3Dr" (idreg3)); + + tcr2_present =3D ((idreg3 & 0xF) !=3D 0); + + if (!tcr2_present) { + ml_printf("TCR2 is not present, cannot perform test"); + return 0; + } + + asm("mrs %[idreg4], " ID_AA64MMFR4_EL1 "\n\t" + : [idreg4] "=3Dr" (idreg4)); + + asid2_present =3D ((idreg4 & 0xF00) !=3D 0); + + asm("msr " TCR2_EL1 ", %[x0]\n\t" + "mrs %[x1], " TCR2_EL1 "\n\t" + : [x1] "=3Dr" (out) + : [x0] "r" (in)); + + if (asid2_present) { + if ((out & feature_mask) =3D=3D in) { + ml_printf("OK\n"); + return 0; + } else { + ml_printf("FAIL: ASID2 present, but read value %lx !=3D " + "written value %lx\n", + out & feature_mask, in); + return 1; + } + } else { + if (out =3D=3D 0) { + ml_printf("TCR2_EL1 reads as RES0 as expected\n"); + return 0; + } else { + ml_printf("FAIL: ASID2, missing but read value %lx !=3D 0\n", + out & feature_mask, in); + return 1; + } + } +} --=20 2.47.3