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 27776C87FCF for ; Fri, 25 Jul 2025 20:28:07 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ufP1F-0002RT-6i; Fri, 25 Jul 2025 16:27:53 -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 1ufOxX-0002fO-VQ for qemu-devel@nongnu.org; Fri, 25 Jul 2025 16:24:04 -0400 Received: from mail-pf1-x434.google.com ([2607:f8b0:4864:20::434]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ufOxV-0001S9-UW for qemu-devel@nongnu.org; Fri, 25 Jul 2025 16:24:03 -0400 Received: by mail-pf1-x434.google.com with SMTP id d2e1a72fcca58-748fe69a7baso2310542b3a.3 for ; Fri, 25 Jul 2025 13:24:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1753475040; x=1754079840; darn=nongnu.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id:from :to:cc:subject:date:message-id:reply-to; bh=JTuumkgFOey9hX3vvE2OZMKLe9YWvrTZUKA/vxEnCkg=; b=c8AbbcXuQaKzruuaebWoA2RrI9cu0t+m/dWe/Xw2BTtGvsHeW84arX3q8yfYUmjlkt 1Uojtv/27nmLQJkkTHBHzI4nzQSG/+bATlEt8ji+eHcyClgrRtE8H1wqHIO07RSJlbj8 ntvsl37VnoJFPQQgIROVb2oqDkoo9XSwr2t3nuEiM+KolUzYWYvySl93ptY9KDhxY05a +i0HlsSXll9ZzaYtxSgdcETphOI+fzNfbdbtTjhn7f+H8WOwKi4wNvY2hRcboeM5pnG2 wVETWQs/aBgKcyeYKrWBCu+3ZmAXTpdSCOQ1a0suuN8/PbXvsBAZdR/zQ3ZR2NTROq61 A1Rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753475040; x=1754079840; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=JTuumkgFOey9hX3vvE2OZMKLe9YWvrTZUKA/vxEnCkg=; b=r40EKq2+Z24jc5y34san0AfGXzT/Vr9wQxj9t1bxftfRDwsfwqmnyz34UhMlyys8Eb j25xWeW9MnsgYuOk9WCIiDlutnYWrK+kwhPYTO+aa7zCHuLcz/CQ2AoF5Rn9V8lN+wX7 nf/4Fzlo93/kYNK1gmkM0AsLuMbBbsYjxi8XkaSZanhxPaTYFJNMCG1vU2IpKR4zB+f9 106d7zkCeEBSvCX4dcNm26cakZ1mvA+WybQ3VctZgpnT7TochY0bHe2b/lvk43qoJUW+ pyasH47sG8K8lEwkqnqw1n9KeRE1ii4hF098dX6jXitjmCkRNPfte841kITgtK9oOr67 /OJg== X-Forwarded-Encrypted: i=1; AJvYcCU1zZd5neFTonXm1L7mWN8SKNSg85hkSWY1uUlLymU3oVVeVbaQ7DD2QidptyfSOJAN030qPVsCM0iU@nongnu.org X-Gm-Message-State: AOJu0YxMLbQiw7aFG5jJGjfrzDL0QZkXFxA+KAPZG2TY3gFHKdKF7g2S ncqNcBHxXkb9Le0j5q5yboMge6EZKQ8yvRlBht/sB2FyhEbtdICe4MQkeEpeO5hipL2lBGa5XDj +wCqQ X-Gm-Gg: ASbGncs7lN2kdbWpskaGixGagFOE0T/i+c4JoEVeXal5NnujBRklNojUk47nbNFmHFN 7QLNWXL11XFhaBtssLkWohXX2NLcvETbIHIwv8pdF/DJ3IHtHPSoDurPHtVqq1XY0qv8HGQTz27 3AxGsoGHF8Sry4zAhJ7ejPvgPHy8vw6mFhmeGcYQT2nOU7V8bOGxfTGjXJmP83dx0wo8OnHmZ1W 7PRR3hTvRW8+r3Eu7IsZju+zp2lfczUAO1sWj0HQOYzFgtVU1MDv3RLpvtTeJ8KJvi+mT4FCVW2 zyvtJI765z+AqL14pUhGpup36I1fDP+cmKG3/iH9zoymarWqSknvuB5J9KqPKbp1lPvkEhSKuS0 cfjhTOznwZ9Z+KtTlES7HhzuCtVzQFivzQxTuBfAU3NLEVQqdluVEUOYgQ+dbk/rX924rKyqTqP 6zCg== X-Google-Smtp-Source: AGHT+IEA6s0V2Ji7HqTc/du0kYggNoG2JNE8Mh+e7z1FMMNUg0fL4ugKRLwslHC0plSq/Dbhz/rqXw== X-Received: by 2002:a05:6a00:1741:b0:736:4644:86ee with SMTP id d2e1a72fcca58-763343da65dmr4833278b3a.14.1753475040354; Fri, 25 Jul 2025 13:24:00 -0700 (PDT) Received: from [192.168.4.112] (syn-098-150-199-049.res.spectrum.com. [98.150.199.49]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7640b8b0911sm342813b3a.124.2025.07.25.13.23.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 25 Jul 2025 13:24:00 -0700 (PDT) Message-ID: <91da16cb-45ee-446b-97df-95ef956d1386@linaro.org> Date: Fri, 25 Jul 2025 10:23:57 -1000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 for-10.1 3/3] linux-user/aarch64: Support ZT_MAGIC signal frame record To: Peter Maydell , qemu-arm@nongnu.org, qemu-devel@nongnu.org References: <20250725175510.3864231-1-peter.maydell@linaro.org> <20250725175510.3864231-4-peter.maydell@linaro.org> Content-Language: en-US From: Richard Henderson In-Reply-To: <20250725175510.3864231-4-peter.maydell@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::434; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x434.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 On 7/25/25 07:55, Peter Maydell wrote: > FEAT_SME2 adds the ZT0 register, whose contents may need to be > preserved and restored on signal handler entry and exit. This is > done with a new ZT_MAGIC record. We forgot to implement support for > this in our linux-user code before enabling the SME2p1 emulation, > which meant that a signal handler using SME would corrupt the ZT0 > register value, and code that attempted to unwind an exception from > inside a signal handler would not work. > > Add the missing record handling. > > Fixes: 7b1613a1020d2942 ("target/arm: Enable FEAT_SME2p1 on -cpu max") > Signed-off-by: Peter Maydell > --- > linux-user/aarch64/signal.c | 93 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 92 insertions(+), 1 deletion(-) Reviewed-by: Richard Henderson r~