From patchwork Fri Mar 14 13:16:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 873450 Delivered-To: patch@linaro.org Received: by 2002:a5d:4308:0:b0:38f:210b:807b with SMTP id h8csp704163wrq; Fri, 14 Mar 2025 06:21:39 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCXiUjWcuNub1E6B2UYBEFWwJARSQpz+5j8M6lrUiE9K23v8qVwnkAH1GKRSaflv/uiilKMKHg==@linaro.org X-Google-Smtp-Source: AGHT+IH2HfKijrMTkdz5lZXR4D7s8x0LbRlclUnrBSqOaWAPZaR8o5Eb5OTw3XfuI3XuZeE/0VHh X-Received: by 2002:a0c:f747:0:b0:6e8:f445:3578 with SMTP id 6a1803df08f44-6eaea9961b5mr29491246d6.2.1741958499464; Fri, 14 Mar 2025 06:21:39 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1741958499; cv=none; d=google.com; s=arc-20240605; b=eBSgFWnApsQdhMvl+LV1MjANVUCJmcyBSd5SsDacewO1EbfvQQq5sjk3EmXj2Phs1A tIHbmpNcb9xkNuWKbxAQdndt9FV2IrMkaqkd+khnXvhpeql1qNNKjlxbjVcFTCKqd5mp HTbWdjZmC5roNJ2LCDYZ3N421zIMaKL/mngSKNPtZ7HJ59U/14ld2Q86J9oIzg0mH3JD UXmUEuGFKmQM+6TkdEp7s8lemXipW2WRu2/Ujx8UMEBGhEYGDKYPzlRhg5KU5PObWp29 o6M1vHwr9HSciLBk35NZ623U1nb2lCvCHZwsjG9RvfCvYzXEB7laSTGKn0Qp9xfZld6I gnpw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=qF7NqSa5lV0sZZKHA8ojvh+EUzwVOc8Mo3QSd+ZWM7U=; fh=PnYt+qEB9tAfMKoqBm2xjKOFpYyFFGPudh5cVIoieJM=; b=SwLAt4r3BXfq2m3+PcjZ3b4O4x8PltZSxlHyGq/RccpwCZYpMdrz3Qu3A4dA26q1dz mBJhHpIvD8rnDLdKc76MiGShZJwBv1HAq5JDQOgPG6o/UYq18spCk/ra9bDjIrAB03+a oFlXiswC2u2+Hrp72ZRxP6pNaTi5nedlL8m+A6K+7ewKOJ3Ziu5x9YcVLNkY3c/Tw97y O4sUA0HeMaX9U6TtI38JPa7+LUZiIG7xLFqC4l2fMi/yijBucbdSGtyeKA3OvVYch6bZ zapfP4qOs1ZUJTXecH3FgQtoimDrmMZslaUbiTLF38SrmIsoVKRQ7p/A7Ek1p+iZ5UXA RAyQ==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Z5GLj+Rb; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id d75a77b69052e-476bb8887e7si35650521cf.655.2025.03.14.06.21.39 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 14 Mar 2025 06:21:39 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Z5GLj+Rb; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org; dara=neutral header.i=@linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tt4uL-0005DR-JW; Fri, 14 Mar 2025 09:17:01 -0400 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 1tt4uJ-0005CO-1r for qemu-devel@nongnu.org; Fri, 14 Mar 2025 09:16:59 -0400 Received: from mail-wr1-x431.google.com ([2a00:1450:4864:20::431]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tt4uH-00019M-Bj for qemu-devel@nongnu.org; Fri, 14 Mar 2025 09:16:58 -0400 Received: by mail-wr1-x431.google.com with SMTP id ffacd0b85a97d-3913d129c1aso1668434f8f.0 for ; Fri, 14 Mar 2025 06:16:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1741958216; x=1742563016; 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=qF7NqSa5lV0sZZKHA8ojvh+EUzwVOc8Mo3QSd+ZWM7U=; b=Z5GLj+RbKF/NqsvsgTLm0NlNaI8X77Wl3M9dfnZX3cQRRojQuMvm2o+bVkEm5V34RI lbuwTsExS5dKbZRkeTLeBeQ2BpdcYF2wZ76vi/yOvEASu/N1PbWblWloyeTj0MqDjd3E KBkMl8dSvGQGsFzcg3amOMwo7nhEGP2J+Uy5t9UJwKuE/KJ26vlemyngok90wnCEEuGS ORRglJakTjP5CdMXLgQpNfQhYiYtlwN6gsYU8D/V/D3iYbPnQEDAjqOqqFt3wjgeX0LP oo9tnFFe531TIGZ1n+vjlaQxP/fUUOAilVfBuvYJSCR57Fkb5slQmzMN375dMIdMfv40 s1ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741958216; x=1742563016; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qF7NqSa5lV0sZZKHA8ojvh+EUzwVOc8Mo3QSd+ZWM7U=; b=gjjwf+FHFNnpN08QPqRCDHAK02i0R0LyiocaFrpQsanKB+jxjtzy6mKBEBjDE4kyXE W4xoPaF54Fn4yqk9U+QYUJVL+hHV64gdigpyh8io7nALz9BXmDU/0hjemWtj8yiOI0AA zWr3ko4i2dwF/eu3gTq+AVPcAaTGwcnAuEjWalU/K050Si7TH/AMHBjkatYn5iwawtOX l9n2ZQfSO2fQsglMYf5mpe2DN3rnobEwc5m4r92VfPGHm4o+TPtHQ4IX5dzbWq+RTVkR vCVY9qZExCgnY3AEGgs/he5UszIctoysTglSCzKAD/25W5uPLKdrKwIBHhFligtQaLCZ DUjQ== X-Gm-Message-State: AOJu0YxTtRyTfyHgxI/1u3O0QSdZ4s3Zrica+q+0bf/mBH/R2RkixQag jGaJ0wtZL/rZW5XZBScIu8YXK6Vh7okBsLPwkOB1uOPnsK5IkX2NlAGhl1hXFZzpp9ogrnm7scO Q X-Gm-Gg: ASbGncv6fuH6YTHuwQ7Td437s+6go0hI9eF6WHcNtxHmPUzoFRqXE5HsymGXuRe0FT4 uyNbH6XNzUjueQvlpqCaeiQjxgzmLyqvv1Q+P9tG4JIJZdEGOKCLCghkRH0rmJwsJK/g0VF/5Kk n5XJrQOQbqNCU7KJxFCgfd5YYkScUIkcXnYJ0xiOlt2o/z8K9ctjdupoM3s858RIo1dNbuOpjjU NN2r3HW+3eJslAA+DLAPzmqNFNRd+yBPmvIVWuBGteEeSbXIMqq/NxPqRSfG2prokNzXloJAnT0 r+bakGUKmDaI5AuNpiSd4dHE/ghc81M9i51DEsCx4fCXL4h4NgzSuTI2Nu8V0w== X-Received: by 2002:a5d:5f47:0:b0:390:f9d0:5e7 with SMTP id ffacd0b85a97d-3971c3b0c29mr3683343f8f.13.1741958215718; Fri, 14 Mar 2025 06:16:55 -0700 (PDT) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-395cb7eb93csm5437923f8f.86.2025.03.14.06.16.54 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Mar 2025 06:16:54 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 16/17] target/arm: Simplify pstate_sm check in sve_access_check Date: Fri, 14 Mar 2025 13:16:36 +0000 Message-ID: <20250314131637.371866-17-peter.maydell@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250314131637.371866-1-peter.maydell@linaro.org> References: <20250314131637.371866-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=peter.maydell@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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org From: Richard Henderson In StreamingMode, fp_access_checked is handled already. We cannot fall through to fp_access_check lest we fall foul of the double-check assertion. Cc: qemu-stable@nongnu.org Fixes: 285b1d5fcef ("target/arm: Handle SME in sve_access_check") Signed-off-by: Richard Henderson Message-id: 20250307190415.982049-3-richard.henderson@linaro.org Reviewed-by: Peter Maydell [PMM: move declaration of 'ret' to top of block] Signed-off-by: Peter Maydell --- target/arm/tcg/translate-a64.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 48e0ac75b11..39014325df1 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -1456,23 +1456,23 @@ static int fp_access_check_vector_hsd(DisasContext *s, bool is_q, MemOp esz) bool sve_access_check(DisasContext *s) { if (s->pstate_sm || !dc_isar_feature(aa64_sve, s)) { + bool ret; + assert(dc_isar_feature(aa64_sme, s)); - if (!sme_sm_enabled_check(s)) { - goto fail_exit; - } - } else if (s->sve_excp_el) { + ret = sme_sm_enabled_check(s); + s->sve_access_checked = (ret ? 1 : -1); + return ret; + } + if (s->sve_excp_el) { + /* Assert that we only raise one exception per instruction. */ + assert(!s->sve_access_checked); gen_exception_insn_el(s, 0, EXCP_UDEF, syn_sve_access_trap(), s->sve_excp_el); - goto fail_exit; + s->sve_access_checked = -1; + return false; } s->sve_access_checked = 1; return fp_access_check(s); - - fail_exit: - /* Assert that we only raise one exception per instruction. */ - assert(!s->sve_access_checked); - s->sve_access_checked = -1; - return false; } /*