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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id DDDE0C83F1A for ; Wed, 23 Jul 2025 17:11:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 70EDA6B0150; Wed, 23 Jul 2025 13:11:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6BFC16B0151; Wed, 23 Jul 2025 13:11:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5D5BA6B0152; Wed, 23 Jul 2025 13:11:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 4ECE96B0150 for ; Wed, 23 Jul 2025 13:11:29 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 0365DB5A3F for ; Wed, 23 Jul 2025 17:11:28 +0000 (UTC) X-FDA: 83696170698.03.B0F75AE Received: from mail-lj1-f176.google.com (mail-lj1-f176.google.com [209.85.208.176]) by imf18.hostedemail.com (Postfix) with ESMTP id D998D1C0017 for ; Wed, 23 Jul 2025 17:11:26 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b=UHYpJlv4; spf=pass (imf18.hostedemail.com: domain of ryabinin.a.a@gmail.com designates 209.85.208.176 as permitted sender) smtp.mailfrom=ryabinin.a.a@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1753290687; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=h0LUnIOIz73OOlhKmDgw5NN8XNp7rSGUS+XkRlIQ8F4=; b=Ah5XSCqRHbwz8Xtz81yXZTTpmv6Gn/hvGbrUaCpwjnNoT8TB7/hY4LNKymYAFrY8P5BgCH 3DtN4t88BtCpBhcJYkJ1TPcG4K5luahsSXn2Y3J2DiS6gKTQbj9CccUCKiBTcwqfIGfcIz lLDIldNjI+Ac6cpSUBYC06BQtSypKi4= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1753290687; a=rsa-sha256; cv=none; b=4aBsVMHI7j/HNYx1RwTYBJK9hDmsZly3ps5OknJhq0evjP0860efyhq0PCW/OAQNaJS1x9 vNhxEZf4FZc81CZ0OocP7mNqGz7Q/gTDf1rvSGLbLPuveknndUXdT1TiIPZJoGvDKqhsJX Bft4OhRtMWkhggl+Q3jlwkp1YlloIA0= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b=UHYpJlv4; spf=pass (imf18.hostedemail.com: domain of ryabinin.a.a@gmail.com designates 209.85.208.176 as permitted sender) smtp.mailfrom=ryabinin.a.a@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-lj1-f176.google.com with SMTP id 38308e7fff4ca-32b4eb13e8cso51311fa.1 for ; Wed, 23 Jul 2025 10:11:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1753290685; x=1753895485; darn=kvack.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=h0LUnIOIz73OOlhKmDgw5NN8XNp7rSGUS+XkRlIQ8F4=; b=UHYpJlv4llSG7E3rbtcqdbeOHlNs1oBphYNuc5I3LVRWr2DLAGLQO0Wa7jXLSbsMKB YCPkIAckbm59mULF6z2QU9mAOh2XbYimlCIb2AihgGbCN2FvrfTgEpxvOkj5VaEWCRWy fIHiDdXd/BPVmRvuQPaoGs54sCNHfXGtqTQBu/zKwlxG+1Rso2g13kW/1J1M8nnXaSZR aSJMa4q4IV4qClDocZBtCsk9JyewPx69HzgnonAegf2HZ8YTong1rxeyMC6d93DDJpxf GD9lqhMVantXcdKe6wjvovfLvVc3TmqCrKe6x1SclK5sJy0BCVx9Mr5mIdckcMMvgyTP Rg9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753290685; x=1753895485; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=h0LUnIOIz73OOlhKmDgw5NN8XNp7rSGUS+XkRlIQ8F4=; b=qhLmfyMwyA/SVxWQ6QZ6yRp/T4CzXyZa3NNaIrDW16MtgPFbeFbOyJ7XuIVPFv57Tk RtO9XGjTM3jLXOpbktkqaFvZcsdEIUpJaksuofKZSkOgmJXPDeN0sKzIVUKrPfqywNuW 52N0OR82rzfrfsSTfxuKVBv0y34/AeAIORhq7Lm+qZvH5uEtvsrLWLutKyrsmk9rqikH g15a4gp5yfsEq1R+U4frh3BRNi8hqGGtijAoJ0TzwsvBeo4K7s5x34YlWSLf+gz/WIqM oCZ1ybq401q2x4Rpf+Vwh8zWFB6VCr6X5AKGCUqdp3MTllh0ClQHdT4bEMMR2Nr5gyXr IkPA== X-Forwarded-Encrypted: i=1; AJvYcCViYivK7g3dRAURr0hMnyW+I+/gpFZ6zIgKchlkWY9o4rAEl/v3FNwYQkf/469NBUrIg3wqgi+pCg==@kvack.org X-Gm-Message-State: AOJu0YymmLMROJtGZ9ew6I3vQRdlgYih1TskA8ZX79I35arxb1mIHB4x gOwNtIBesTz6pQHUXooobZFvsxoTKXL5bkFr23ygTyit/ttBAzAoTPM7 X-Gm-Gg: ASbGncvZ38vXdrqjhVG6iUHw14laf0rsIb4X+HydD2SPRyktex8AFyU56L61CBw7MHB Lsk5D8EP4slfOHI39Vgn/NMp7WKop0ceUvv75eDfwF1NHgl6cx9HDLYGKsVw/HL1ZgWiD6rupd+ AGGeXugnx023Mx7JlcC6+P/Akskli8zcL8nZBKPzr2ZCuz0aJMdQwhDZeUM9VNGuBtqQZB5zf8P 5grYPP1D7Jo2TKv81uGoJxlC4mGxiwuG0SkO+yQqU5htsAI2Yw5LiJFsxmIiF8q21dhhVZ9Eblf AeYJdKS/kULWl6M/wScMKvxuARfO+Z4BMsGyBubXeChS0O3McWwKLcTdT7ZC8yC2CzBDZTdlTQ9 SSqKMI4QvI7kTuHqSx/oFor1ZlTML X-Google-Smtp-Source: AGHT+IH2g67FKl5Ss4FX0QBC4tL2LXDPhFaEQPcQJWbHc0FwMHy9whqZBWSEtQi4JTvV5r53QIeSPA== X-Received: by 2002:a05:651c:f19:b0:32d:fd8c:7e76 with SMTP id 38308e7fff4ca-330dfd2d969mr3521411fa.7.1753290684563; Wed, 23 Jul 2025 10:11:24 -0700 (PDT) Received: from [10.214.35.248] ([80.93.240.68]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-330a91d9eaasm19869811fa.85.2025.07.23.10.11.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Jul 2025 10:11:23 -0700 (PDT) Message-ID: <4dd38293-4307-474f-8eb7-0e83f5d3b996@gmail.com> Date: Wed, 23 Jul 2025 19:10:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 08/12] kasan/um: select ARCH_DEFER_KASAN and call kasan_init_generic To: Sabyrzhan Tasbolatov Cc: hca@linux.ibm.com, christophe.leroy@csgroup.eu, andreyknvl@gmail.com, agordeev@linux.ibm.com, akpm@linux-foundation.org, glider@google.com, dvyukov@google.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-mm@kvack.org References: <20250717142732.292822-1-snovitoll@gmail.com> <20250717142732.292822-9-snovitoll@gmail.com> <85de2e1f-a787-4862-87e4-2681e749cef0@gmail.com> Content-Language: en-US From: Andrey Ryabinin In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: D998D1C0017 X-Stat-Signature: 99rwd4mfdign3ph7nhwifho5r8x81mbc X-Rspam-User: X-HE-Tag: 1753290686-750116 X-HE-Meta: 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 cI/2mfGs 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/22/25 4:17 PM, Sabyrzhan Tasbolatov wrote: > On Tue, Jul 22, 2025 at 4:00 AM Andrey Ryabinin wrote: >> >> >> >> On 7/17/25 4:27 PM, Sabyrzhan Tasbolatov wrote: >>> UserMode Linux needs deferred KASAN initialization as it has a custom >>> kasan_arch_is_ready() implementation that tracks shadow memory readiness >>> via the kasan_um_is_ready flag. >>> >>> Select ARCH_DEFER_KASAN to enable the unified static key mechanism >>> for runtime KASAN control. Call kasan_init_generic() which handles >>> Generic KASAN initialization and enables the static key. >>> >>> Delete the key kasan_um_is_ready in favor of the unified kasan_enabled() >>> interface. >>> >>> Note that kasan_init_generic has __init macro, which is called by >>> kasan_init() which is not marked with __init in arch/um code. >>> >>> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217049 >>> Signed-off-by: Sabyrzhan Tasbolatov >>> --- >>> Changes in v3: >>> - Added CONFIG_ARCH_DEFER_KASAN selection for proper runtime control >>> --- >>> arch/um/Kconfig | 1 + >>> arch/um/include/asm/kasan.h | 5 ----- >>> arch/um/kernel/mem.c | 4 ++-- >>> 3 files changed, 3 insertions(+), 7 deletions(-) >>> >>> diff --git a/arch/um/Kconfig b/arch/um/Kconfig >>> index f08e8a7fac9..fd6d78bba52 100644 >>> --- a/arch/um/Kconfig >>> +++ b/arch/um/Kconfig >>> @@ -8,6 +8,7 @@ config UML >>> select ARCH_WANTS_DYNAMIC_TASK_STRUCT >>> select ARCH_HAS_CPU_FINALIZE_INIT >>> select ARCH_HAS_FORTIFY_SOURCE >>> + select ARCH_DEFER_KASAN >>> select ARCH_HAS_GCOV_PROFILE_ALL >>> select ARCH_HAS_KCOV >>> select ARCH_HAS_STRNCPY_FROM_USER >>> diff --git a/arch/um/include/asm/kasan.h b/arch/um/include/asm/kasan.h >>> index f97bb1f7b85..81bcdc0f962 100644 >>> --- a/arch/um/include/asm/kasan.h >>> +++ b/arch/um/include/asm/kasan.h >>> @@ -24,11 +24,6 @@ >>> >>> #ifdef CONFIG_KASAN >>> void kasan_init(void); >>> -extern int kasan_um_is_ready; >>> - >>> -#ifdef CONFIG_STATIC_LINK >>> -#define kasan_arch_is_ready() (kasan_um_is_ready) >>> -#endif >>> #else >>> static inline void kasan_init(void) { } >>> #endif /* CONFIG_KASAN */ >>> diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c >>> index 76bec7de81b..058cb70e330 100644 >>> --- a/arch/um/kernel/mem.c >>> +++ b/arch/um/kernel/mem.c >>> @@ -21,9 +21,9 @@ >>> #include >>> #include >>> #include >>> +#include >>> >>> #ifdef CONFIG_KASAN >>> -int kasan_um_is_ready; >>> void kasan_init(void) >>> { >>> /* >>> @@ -32,7 +32,7 @@ void kasan_init(void) >>> */ >>> kasan_map_memory((void *)KASAN_SHADOW_START, KASAN_SHADOW_SIZE); >>> init_task.kasan_depth = 0; >>> - kasan_um_is_ready = true; >>> + kasan_init_generic(); >> >> I think this runs before jump_label_init(), and static keys shouldn't be switched before that.> } > > I got the warning in my local compilation and from kernel CI [1]. > > arch/um places kasan_init() in own `.kasan_init` section, while > kasan_init_generic() is called from __init. No, kasan_init() is in text section as the warning says. It's kasan_init_ptr in .kasan_init. Adding __init to kasan_init() should fix the warning. > Could you suggest a way how I can verify the functions call order? > By code inspection? or run uder gdb. kasan_init() is initialization routine called before main(). jump_label_init() called from start_kernel()<-start_kernel_proc()<-... main() > I need to familiarize myself with how to run arch/um locally It's as simple as: ARCH=um make ./linux rootfstype=hostfs ro init=/bin/bash 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 634EEC83F17 for ; Wed, 23 Jul 2025 17:11:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=c68uPSe7/LQOGq56o78N6Aq9zkoMBOR44J3tL9SMeRE=; b=QvbCAZjoZpWJ4y ySj0MnIU9vBmjl9If/d9mGVeCYFY6iclk+wFJGLdqJope6GIQ9L9hmQUvDXL7zF7GELIQgX7ZqDSh w9y92VrqEC+wHwpHnN2NFPTJW3s66rvvVjkRe9aG+DBaLWkbEe7Ihn7wwm1zgpgrZCvnZ6QwbQ9d0 f056MthQs/t1LYAqCQKnsofWJdQ6vXEdtWSNSfGh1GBdg9vuhdhI+QVAUEA/olJgblIdh+5vdPMfP sHfqReTI8k0YbuPDegz2pFoPzNxqeo/9Cmv8dS4ih44FjXOq81xe/ll4OcvtJVk6det+tOtx5wtNY ih0wVx5FySBn148dfiNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ued06-00000005Z5v-0A0p; Wed, 23 Jul 2025 17:11:30 +0000 Received: from mail-lj1-x22a.google.com ([2a00:1450:4864:20::22a]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ued03-00000005Z4M-176S; Wed, 23 Jul 2025 17:11:28 +0000 Received: by mail-lj1-x22a.google.com with SMTP id 38308e7fff4ca-33095f59c43so24831fa.2; Wed, 23 Jul 2025 10:11:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1753290685; x=1753895485; darn=lists.infradead.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=h0LUnIOIz73OOlhKmDgw5NN8XNp7rSGUS+XkRlIQ8F4=; b=Y0SObY0U9htZdVeTuT5uBbrZmTompZWkWiYU0dwjsqtBNon3wJTaFslnSq+9Xd3rYV uNMgkU23raZ09SUtK+U1N3Dxw/jrlX+WjhGUwgL9ifXRTE2DVXX/8822vU70tXX2822v nlWpyzPAzvTmLCBx3xvyw2vDDdYvUxYX1nG5k5yn4gvdFogTI0GEpHRKeYRMJqP/6kwp BqKxXbhQYH9SnBG76fc11P/4zgi4OcGMFmRi1hO2X0vvrhNdA7RPWeKWHEZccK+OyYuI Dj98vMJQ36z5czs3bU91udmzsOOkvv+Ih3OjKZwryrZNmEv7JCnkt9rNazyTJhdSRYUz hizQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753290685; x=1753895485; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=h0LUnIOIz73OOlhKmDgw5NN8XNp7rSGUS+XkRlIQ8F4=; b=qyMQ4gz9rejI9ujCmDc2S06xgSvk88QRPbBnij0ECWxTUVw3miT3rrlNJB9Sf5bTsa OADZ8my3PUr01qECmAonmzeSOrVRjLV9ezhLKNMVbZY3S5B4xuXmYeAH8AH3kU2fmsfm aktRhSmceqKLBbDVFn1PuRDu0uX5dv1BYe+ic7UAoZYWVUL/uvTlDKxWFs7RxTuvH1Ym I7t1KIBdFEVHkxAUpSzrojrwaNOKK87zc+YeTqB6sUkgEZSdTP/mdGJWDZjQ0YLbv+A5 PM2PvpC9pKWhdJVJMo/vJWZE5wDLziJQfJ7g7v8b88d5xyH8YueyzJu1s3LCxto2M78J gDRA== X-Forwarded-Encrypted: i=1; AJvYcCWLFI+WseCyxOIpWC/Nm843PpMSbGZDrTNMzwHnYMb0Mxp8En0Jymlms6OhYTCq2Qh8upS/P7v96sR7vQ==@lists.infradead.org, AJvYcCXqsFxnzYWNBmkS0KYkxnO0E0zggdFhcNHQiLes615Lb05QbkFjwXbEksVJWd2ZOQZAnQ+0e6UHIFw=@lists.infradead.org X-Gm-Message-State: AOJu0YyQBMiW9bjiL6XpcwKr5tQQcmSZLXP3ifmBleJ03M19yVrA7Gf2 0xu3EBrIytcznE5zQZxGh7+/LujrjAdNktSpB4JoXj4mSwLuQfntG7sx X-Gm-Gg: ASbGnctLSnnZH9zs7mH/KS1HY/SfytrHak5yuAtExjDqz2NPQ7/FtlYFUfRGwOu0h0W wZ8C+S6OK8uCz2aND/zKTKmpYbeg/1uLXsY4ubzbXRMuJ1pz1qtnhuSi1EorX8awqL2IS94b/wT 0cxLYyaw9j2NRg7wdCNVZKHbR1sd/wA2S7llAQp39Jtu1Gjpw6aGgmbKy+m08huOnJ6Y3HpnXyc b/o3BnuOGMdWI0HQ6xSWA4ICnRHAxC2Zo4wodewZapqDvrGAgjLyBNvhV2GHEWoWAjll/arhsb6 fPcAIfHb6L0G0j62u1SUQMCniwO7WN5YdPfRE4Ej4OgLWSfq8gBP2bGKx19hCI9BUH8F4z/v95J Y6K97K+KVd7KpzUIauiCh19ws/FQ1 X-Google-Smtp-Source: AGHT+IH2g67FKl5Ss4FX0QBC4tL2LXDPhFaEQPcQJWbHc0FwMHy9whqZBWSEtQi4JTvV5r53QIeSPA== X-Received: by 2002:a05:651c:f19:b0:32d:fd8c:7e76 with SMTP id 38308e7fff4ca-330dfd2d969mr3521411fa.7.1753290684563; Wed, 23 Jul 2025 10:11:24 -0700 (PDT) Received: from [10.214.35.248] ([80.93.240.68]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-330a91d9eaasm19869811fa.85.2025.07.23.10.11.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Jul 2025 10:11:23 -0700 (PDT) Message-ID: <4dd38293-4307-474f-8eb7-0e83f5d3b996@gmail.com> Date: Wed, 23 Jul 2025 19:10:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 08/12] kasan/um: select ARCH_DEFER_KASAN and call kasan_init_generic To: Sabyrzhan Tasbolatov Cc: hca@linux.ibm.com, christophe.leroy@csgroup.eu, andreyknvl@gmail.com, agordeev@linux.ibm.com, akpm@linux-foundation.org, glider@google.com, dvyukov@google.com, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-mm@kvack.org References: <20250717142732.292822-1-snovitoll@gmail.com> <20250717142732.292822-9-snovitoll@gmail.com> <85de2e1f-a787-4862-87e4-2681e749cef0@gmail.com> Content-Language: en-US From: Andrey Ryabinin In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250723_101127_302512_2002D5E4 X-CRM114-Status: GOOD ( 17.46 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org CgpPbiA3LzIyLzI1IDQ6MTcgUE0sIFNhYnlyemhhbiBUYXNib2xhdG92IHdyb3RlOgo+IE9uIFR1 ZSwgSnVsIDIyLCAyMDI1IGF0IDQ6MDDigK9BTSBBbmRyZXkgUnlhYmluaW4gPHJ5YWJpbmluLmEu YUBnbWFpbC5jb20+IHdyb3RlOgo+Pgo+Pgo+Pgo+PiBPbiA3LzE3LzI1IDQ6MjcgUE0sIFNhYnly emhhbiBUYXNib2xhdG92IHdyb3RlOgo+Pj4gVXNlck1vZGUgTGludXggbmVlZHMgZGVmZXJyZWQg S0FTQU4gaW5pdGlhbGl6YXRpb24gYXMgaXQgaGFzIGEgY3VzdG9tCj4+PiBrYXNhbl9hcmNoX2lz X3JlYWR5KCkgaW1wbGVtZW50YXRpb24gdGhhdCB0cmFja3Mgc2hhZG93IG1lbW9yeSByZWFkaW5l c3MKPj4+IHZpYSB0aGUga2FzYW5fdW1faXNfcmVhZHkgZmxhZy4KPj4+Cj4+PiBTZWxlY3QgQVJD SF9ERUZFUl9LQVNBTiB0byBlbmFibGUgdGhlIHVuaWZpZWQgc3RhdGljIGtleSBtZWNoYW5pc20K Pj4+IGZvciBydW50aW1lIEtBU0FOIGNvbnRyb2wuIENhbGwga2FzYW5faW5pdF9nZW5lcmljKCkg d2hpY2ggaGFuZGxlcwo+Pj4gR2VuZXJpYyBLQVNBTiBpbml0aWFsaXphdGlvbiBhbmQgZW5hYmxl cyB0aGUgc3RhdGljIGtleS4KPj4+Cj4+PiBEZWxldGUgdGhlIGtleSBrYXNhbl91bV9pc19yZWFk eSBpbiBmYXZvciBvZiB0aGUgdW5pZmllZCBrYXNhbl9lbmFibGVkKCkKPj4+IGludGVyZmFjZS4K Pj4+Cj4+PiBOb3RlIHRoYXQga2FzYW5faW5pdF9nZW5lcmljIGhhcyBfX2luaXQgbWFjcm8sIHdo aWNoIGlzIGNhbGxlZCBieQo+Pj4ga2FzYW5faW5pdCgpIHdoaWNoIGlzIG5vdCBtYXJrZWQgd2l0 aCBfX2luaXQgaW4gYXJjaC91bSBjb2RlLgo+Pj4KPj4+IENsb3NlczogaHR0cHM6Ly9idWd6aWxs YS5rZXJuZWwub3JnL3Nob3dfYnVnLmNnaT9pZD0yMTcwNDkKPj4+IFNpZ25lZC1vZmYtYnk6IFNh YnlyemhhbiBUYXNib2xhdG92IDxzbm92aXRvbGxAZ21haWwuY29tPgo+Pj4gLS0tCj4+PiBDaGFu Z2VzIGluIHYzOgo+Pj4gLSBBZGRlZCBDT05GSUdfQVJDSF9ERUZFUl9LQVNBTiBzZWxlY3Rpb24g Zm9yIHByb3BlciBydW50aW1lIGNvbnRyb2wKPj4+IC0tLQo+Pj4gIGFyY2gvdW0vS2NvbmZpZyAg ICAgICAgICAgICB8IDEgKwo+Pj4gIGFyY2gvdW0vaW5jbHVkZS9hc20va2FzYW4uaCB8IDUgLS0t LS0KPj4+ICBhcmNoL3VtL2tlcm5lbC9tZW0uYyAgICAgICAgfCA0ICsrLS0KPj4+ICAzIGZpbGVz IGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKPj4+Cj4+PiBkaWZmIC0t Z2l0IGEvYXJjaC91bS9LY29uZmlnIGIvYXJjaC91bS9LY29uZmlnCj4+PiBpbmRleCBmMDhlOGE3 ZmFjOS4uZmQ2ZDc4YmJhNTIgMTAwNjQ0Cj4+PiAtLS0gYS9hcmNoL3VtL0tjb25maWcKPj4+ICsr KyBiL2FyY2gvdW0vS2NvbmZpZwo+Pj4gQEAgLTgsNiArOCw3IEBAIGNvbmZpZyBVTUwKPj4+ICAg ICAgIHNlbGVjdCBBUkNIX1dBTlRTX0RZTkFNSUNfVEFTS19TVFJVQ1QKPj4+ICAgICAgIHNlbGVj dCBBUkNIX0hBU19DUFVfRklOQUxJWkVfSU5JVAo+Pj4gICAgICAgc2VsZWN0IEFSQ0hfSEFTX0ZP UlRJRllfU09VUkNFCj4+PiArICAgICBzZWxlY3QgQVJDSF9ERUZFUl9LQVNBTgo+Pj4gICAgICAg c2VsZWN0IEFSQ0hfSEFTX0dDT1ZfUFJPRklMRV9BTEwKPj4+ICAgICAgIHNlbGVjdCBBUkNIX0hB U19LQ09WCj4+PiAgICAgICBzZWxlY3QgQVJDSF9IQVNfU1RSTkNQWV9GUk9NX1VTRVIKPj4+IGRp ZmYgLS1naXQgYS9hcmNoL3VtL2luY2x1ZGUvYXNtL2thc2FuLmggYi9hcmNoL3VtL2luY2x1ZGUv YXNtL2thc2FuLmgKPj4+IGluZGV4IGY5N2JiMWY3Yjg1Li44MWJjZGMwZjk2MiAxMDA2NDQKPj4+ IC0tLSBhL2FyY2gvdW0vaW5jbHVkZS9hc20va2FzYW4uaAo+Pj4gKysrIGIvYXJjaC91bS9pbmNs dWRlL2FzbS9rYXNhbi5oCj4+PiBAQCAtMjQsMTEgKzI0LDYgQEAKPj4+Cj4+PiAgI2lmZGVmIENP TkZJR19LQVNBTgo+Pj4gIHZvaWQga2FzYW5faW5pdCh2b2lkKTsKPj4+IC1leHRlcm4gaW50IGth c2FuX3VtX2lzX3JlYWR5Owo+Pj4gLQo+Pj4gLSNpZmRlZiBDT05GSUdfU1RBVElDX0xJTksKPj4+ IC0jZGVmaW5lIGthc2FuX2FyY2hfaXNfcmVhZHkoKSAoa2FzYW5fdW1faXNfcmVhZHkpCj4+PiAt I2VuZGlmCj4+PiAgI2Vsc2UKPj4+ICBzdGF0aWMgaW5saW5lIHZvaWQga2FzYW5faW5pdCh2b2lk KSB7IH0KPj4+ICAjZW5kaWYgLyogQ09ORklHX0tBU0FOICovCj4+PiBkaWZmIC0tZ2l0IGEvYXJj aC91bS9rZXJuZWwvbWVtLmMgYi9hcmNoL3VtL2tlcm5lbC9tZW0uYwo+Pj4gaW5kZXggNzZiZWM3 ZGU4MWIuLjA1OGNiNzBlMzMwIDEwMDY0NAo+Pj4gLS0tIGEvYXJjaC91bS9rZXJuZWwvbWVtLmMK Pj4+ICsrKyBiL2FyY2gvdW0va2VybmVsL21lbS5jCj4+PiBAQCAtMjEsOSArMjEsOSBAQAo+Pj4g ICNpbmNsdWRlIDxvcy5oPgo+Pj4gICNpbmNsdWRlIDx1bV9tYWxsb2MuaD4KPj4+ICAjaW5jbHVk ZSA8bGludXgvc2NoZWQvdGFzay5oPgo+Pj4gKyNpbmNsdWRlIDxsaW51eC9rYXNhbi5oPgo+Pj4K Pj4+ICAjaWZkZWYgQ09ORklHX0tBU0FOCj4+PiAtaW50IGthc2FuX3VtX2lzX3JlYWR5Owo+Pj4g IHZvaWQga2FzYW5faW5pdCh2b2lkKQo+Pj4gIHsKPj4+ICAgICAgIC8qCj4+PiBAQCAtMzIsNyAr MzIsNyBAQCB2b2lkIGthc2FuX2luaXQodm9pZCkKPj4+ICAgICAgICAqLwo+Pj4gICAgICAga2Fz YW5fbWFwX21lbW9yeSgodm9pZCAqKUtBU0FOX1NIQURPV19TVEFSVCwgS0FTQU5fU0hBRE9XX1NJ WkUpOwo+Pj4gICAgICAgaW5pdF90YXNrLmthc2FuX2RlcHRoID0gMDsKPj4+IC0gICAgIGthc2Fu X3VtX2lzX3JlYWR5ID0gdHJ1ZTsKPj4+ICsgICAgIGthc2FuX2luaXRfZ2VuZXJpYygpOwo+Pgo+ PiBJIHRoaW5rIHRoaXMgcnVucyBiZWZvcmUganVtcF9sYWJlbF9pbml0KCksIGFuZCBzdGF0aWMg a2V5cyBzaG91bGRuJ3QgYmUgc3dpdGNoZWQgYmVmb3JlIHRoYXQuPiAgfQo+IAo+IEkgZ290IHRo ZSB3YXJuaW5nIGluIG15IGxvY2FsIGNvbXBpbGF0aW9uIGFuZCBmcm9tIGtlcm5lbCBDSSBbMV0u Cj4gCj4gYXJjaC91bSBwbGFjZXMga2FzYW5faW5pdCgpIGluIG93biBgLmthc2FuX2luaXRgIHNl Y3Rpb24sIHdoaWxlCj4ga2FzYW5faW5pdF9nZW5lcmljKCkgaXMgY2FsbGVkIGZyb20gX19pbml0 LgoKTm8sIGthc2FuX2luaXQoKSBpcyBpbiB0ZXh0IHNlY3Rpb24gYXMgdGhlIHdhcm5pbmcgc2F5 cy4gSXQncyBrYXNhbl9pbml0X3B0ciBpbiAua2FzYW5faW5pdC4KQWRkaW5nIF9faW5pdCB0byBr YXNhbl9pbml0KCkgc2hvdWxkIGZpeCB0aGUgd2FybmluZy4KCgo+IENvdWxkIHlvdSBzdWdnZXN0 IGEgd2F5IGhvdyBJIGNhbiB2ZXJpZnkgdGhlIGZ1bmN0aW9ucyBjYWxsIG9yZGVyPwo+IAoKQnkg Y29kZSBpbnNwZWN0aW9uPyBvciBydW4gdWRlciBnZGIuCgprYXNhbl9pbml0KCkgaXMgaW5pdGlh bGl6YXRpb24gcm91dGluZSBjYWxsZWQgYmVmb3JlIG1haW4oKS4KanVtcF9sYWJlbF9pbml0KCkg Y2FsbGVkIGZyb20gc3RhcnRfa2VybmVsKCk8LXN0YXJ0X2tlcm5lbF9wcm9jKCk8LS4uLiBtYWlu KCkKCj4gSSBuZWVkIHRvIGZhbWlsaWFyaXplIG15c2VsZiB3aXRoIGhvdyB0byBydW4gYXJjaC91 bSBsb2NhbGx5IAoKSXQncyBhcyBzaW1wbGUgYXM6CkFSQ0g9dW0gIG1ha2UgCi4vbGludXggcm9v dGZzdHlwZT1ob3N0ZnMgcm8gaW5pdD0vYmluL2Jhc2gKCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgt cmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWls bWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==