From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.openvz.org (mail.openvz.org [69.168.225.77]) by lore.virtuozzo.com (Postfix) with ESMTPS id 0A83280E7E for ; Wed, 4 Nov 2026 19:22:37 +0000 (UTC) Received: from mail.openvz.org (localhost [127.0.0.1]) by mail.openvz.org (8.14.4/8.14.4) with ESMTP id 6A4JLNCJ026424; Wed, 4 Nov 2026 22:21:24 +0300 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.openvz.org 6A4JLNCJ026424 Authentication-Results: mail.openvz.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=virtuozzo.com header.i=@virtuozzo.com header.b="rALAeDh9" Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by mail.openvz.org (8.14.4/8.14.4) with ESMTP id 6A4JLMhF026420 (version=TLSv1/SSLv3 cipher=AES128-GCM-SHA256 bits=128 verify=FAIL) for ; Wed, 4 Nov 2026 22:21:22 +0300 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.openvz.org 6A4JLMhF026420 Received: by mail-wr1-f72.google.com with SMTP id ffacd0b85a97d-490ab0a20ebso515034f8f.1 for ; Wed, 04 Nov 2026 11:21:22 -0800 (PST) X-Gm-Message-State: APuU4Z+bQTRxvBAo2ZPCQkC+AoqFAI1zzX3tmUj0hmi1PRcD5iRhAOrx gqMsYjb9t+XVKVLvhCLkR75PXUcNDd3ux/dt1Y4ei1Q7Z9DaRpJscx+Z1iOl9M4p7b/uBYjB53e 7CAdNDUYr48xWnAi6Z85fByKpQJLYl96C7qn43SDS0nRpPLl2OXdGEw== X-Gm-Gg: AYBFou0wcXJnNQ5myI0onIxFEv8jn5r5cuaJ9RQMNsdd3xhqq+QoiE8f0uL7JRUb9Lc nEESjoCe4f095ViZ7zkZcPW/YKqG2/XydlYk2X+LDG4oJJJC2lPfTHW0G23GnrO73UbQ7QWq4iZ yP/mlZ6Z/CcT5hdgIbORO8IppWq3tiKzuVkx6+tWJJ4oon4/FZ6raSAqaB6NyMgbA8jRbKXSgqq /vwVhkjVw867UBZiKmclw5y2w0Gf20cITVO6aD+AxFdV0X8dJ2HisnCzCHb7zNNm7LgfvRX3l6C CQarpbU1mkAWS//FAWjm54uBL9FVWGUzs6d49XZoRWxZruUdMRV0AGNiLnVnHHf4zMEO5fO95lu rFbjkRxfwvxoEhYxB X-Received: by 2002:a05:6000:2410:b0:48e:6674:3b2f with SMTP id ffacd0b85a97d-48e6e5005c5mr39494537f8f.51.1793820081711; Wed, 04 Nov 2026 11:21:21 -0800 (PST) X-Received: by 2002:a05:6000:2410:b0:48e:6674:3b2f with SMTP id ffacd0b85a97d-48e6e5005c5mr39494502f8f.51.1793820081241; Wed, 04 Nov 2026 11:21:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1793820081; cv=none; d=google.com; s=arc-20260327; b=O5KwYh9452I8aeZn9bu4NsScqkH1IKRS8nOu1T57cA7/UnOVwt+ZXfczIOOZJE037o BCQ+bLI7+UNug1PlHbLG/6987UCqvx8WmsGIAfFR3lEFKHJf9WzutEiTP6t07JJtKO9s 7G2oQxNKiSxebQTNm9CUrO+nGR0Iz4yO+WZ7srruNPYYw2keemllwDjDvhMFofE85a0Z VFcISah0QmiLW+vadyyok+dR9qEbvotl5ZjGvQ/lO3r859gABIauRm83lJHQqvL7N352 rGwRqBxYAO/lLgJms5H8uPJoGswF9HTahVfshUWOrnu5Q+/JRT6YclxvleAMREs/MRfT T4rQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20260327; h=content-transfer-encoding:mime-version:date:message-id:subject :references:in-reply-to:cc:to:from:dkim-signature; bh=FLx70HGfdbA1m4nBrsFZXeM3GTfF8MpHBVVGnazmlYE=; fh=uhsDkE67n3xzzOEtwERerZAx6dM9BK0jijoZzJPUFqs=; b=opvZBPuB7XrhMnWM2Asl3SWKKik2y+0+xu7R5EyJf9fS49re0E/9ofeVwCElIJnnq8 6E+1EXd8xTriMX10X6xCVH6SEZlDz3DjWQN81p/0vRHvO24S42o7b9XHlTkaitWWneAA cnQcYDWO/YlmGAwFUXJ9VZFQuErOF1BooLWCZh94GhojRJxNqBc0VASfE7HEmD9B8I4f plxXFqthZ+X/dl3+cPIgzXynsCCJWAahPtOig6vyrof2hnkjHgydVv3e1O/hfxYiBPz9 ZS1oExv+MDtG4PxCl+w2CAak9MhgVcZ40RpLmwxhiDf351rbOh7X0DbLAUJA/O+SKbJL xv4Q==; dara=google.com ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=rALAeDh9; spf=pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) smtp.mailfrom=khorenko@virtuozzo.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com Received: from relay.virtuozzo.com (relay.virtuozzo.com. [130.117.225.111]) by mx.google.com with ESMTPS id ffacd0b85a97d-48fef209b85si5824988f8f.308.2026.11.04.11.21.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 11:21:21 -0800 (PST) Received-SPF: pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) client-ip=130.117.225.111; Authentication-Results: mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=rALAeDh9; spf=pass (google.com: domain of khorenko@virtuozzo.com designates 130.117.225.111 as permitted sender) smtp.mailfrom=khorenko@virtuozzo.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=Content-Type:MIME-Version:Date:Message-Id:Subject :From; bh=FLx70HGfdbA1m4nBrsFZXeM3GTfF8MpHBVVGnazmlYE=; b=rALAeDh9/cuj0ND985U Zdmb9V4EabAZ2y9MJJqRFx6hh4LDrhI/U3P8Ucprzgiso0It5l1G9oRyaDxTjgd3KIpOHY4UuUyxh BXki1lh7JuagCHi1oMQ0xy40dSzpD8ZX4y6Zx9tthHjc66cs48qlwJFrOgOFUAFCDSCiS215rz0km r6RUzrjxhVv2bZxTGogsouGTw0qfrqQle/P7R06/PBCcWtK9KsEnu4ovkDA9Z42OHYHLvdLusryeJ dEDP/1ose770SI2aFrorSme8MmjjUdH/dsajFdJBxw5Z8alfb2Bo3dhMhIP8M55yVbpSD1Ub/F0mB P1QSLe1IuLOnjiw==; Received: from ch-demo-asa.virtuozzo.com ([130.117.225.8] helo=f0.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1xOgTz-00HMNh-1x; Wed, 04 Nov 2026 20:21:19 +0100 From: Konstantin Khorenko To: Vasileios Almpanis , Andrey Drobyshev , Pavel Tikhomirov , Konstantin Khorenko In-Reply-To: <20261014-b4-prep-khorenko-vstor-149847-2-doexec-pinned-memory-v1-0-36f1120f9b57@virtuozzo.com> References: <20261014-b4-prep-khorenko-vstor-149847-2-doexec-pinned-memory-v1-0-36f1120f9b57@virtuozzo.com> Message-Id: <179382007680.2760255.7778170435356058929.b4-ty@b4> Date: Wed, 04 Nov 2026 20:21:16 +0100 MIME-Version: 1.0 X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1987; i=khorenko@virtuozzo.com; h=from:subject:message-id; bh=vB8OSKch+xbpJW0+AQnGwO9TnZ3j9mx2fd4oxzqgImc=; b=owEBbQKS/ZANAwAKAVGWCkf5YVwqAcsmYgBq64Wwhm8BNwHXNcxjSE3HNOzFs3BqBXyDbnpaZ VYg2FzeQWSJAjMEAAEKAB0WIQRWD23IPcXT0GO9CCxRlgpH+WFcKgUCauuFsAAKCRBRlgpH+WFc KhArEAC82QhLAk/v2dfMfcO0+mpYvswtFLmeSHaLe9Uw3qNZSDMWsdXaTFc2v3IZbJguX8Wbesm YQtcU2V757Uw90D/vYUAUYWaSBnX8EvZTH6gSH/rMeLrRPXSk4DpPVqxQ5PB0gaEXtkUAFWFKrr x+l8dv3NbakpBTWVFivpw+sJ5MYpO/Y3Spi5RQ50oKpTBKtvLoiG6QUWeCwIPP9KV+y3uWp4GZS yTQuek2tpXJnXbt61WCstO7duKB+H1FQ3AHnSiSJBVVvo8QjXfxYCMO9qXek5gy7U6Je3FOXJKv W47hVjsrWv5NJed4YqBYC0cXYrlemDyagp9hBuKcZrzSs/iAmA8DSEyJuKV8aAFj0qm8r74zhRP M8I1iLbIB+V2BXJbwqqLQU67Xv4OxwrK6LnZmrFiWRtITTjya5hRvGt4AmaOQ1e8HkJdeSvNCJW rcWE8kXrMCK8DX34D/dUEF3h2wYRIT8dXy6U0N7uF41XnnYVSq3FIGDyELbKhKS60WVmgbngIvI jTXcTYkuai3qqS1FghGEOJYjBImHYRmStWg6kA/ZzMuljMHjtGYBz3z08mwyFSK+6eZaMpd7twm bqYmyFfP5noK0QFtNxgiAM6hLkFnd6b07m7LSoPiom0qghX7+tozNDaCff53nQUgJf/rz/xbJeM oZ/eXxOCg1teDIg== X-Developer-Key: i=khorenko@virtuozzo.com; a=openpgp; fpr=560F6DC83DC5D3D063BD082C51960A47F9615C2A X-OZ-Fwd: true Cc: devel@openvz.org Subject: Re: [Devel] [PATCH hci-8.1 0/8] mm: keep DMA-pinned MADV_DOEXEC memory working across exec X-BeenThere: devel@openvz.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: OpenVZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org On Wed, 14 Oct 2026 19:11:03 +0200, Konstantin Khorenko wrote: > mm: keep DMA-pinned MADV_DOEXEC memory working across exec > > VSTOR-149847: memory preserved across exec with MADV_DOEXEC loses its > connection to long-term pins (VFIO DMA, io_uring fixed buffers) after a > live-update exec, because the copy into the new mm write protects the > pages and the first write in the new image copies them away from the > pins. Applies on top of "mm, binfmt_elf: two fixes also posted to > mainline". > http://lore.virtuozzo.com/20261014-b4-prep-khorenko-vstor-149847-1-upstream-fixes-v1-0-7fde9ffbebe9@virtuozzo.com > > [...] Applied to branch-rh10-6.12.0-211.52.1.22.x.vz10-ovz, will be released in rh10-6.12.0-211.52.1.22.18.vz10, thanks! [1/8] oracle/mm: fix VM_BUG_ON hit when preserving memory https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/6a7a30845788 [2/8] oracle/mm: hold the source mmap write lock when copying PTEs https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/a23730a3edab [3/8] oracle/mm: do not write protect COW mappings when preserving across exec https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/624d454834fd [4/8] oracle/mm: write protect preserved PTEs but keep them exclusive https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/ef3f917e118a [5/8] oracle/mm: set MMF_HAS_PINNED on the mm receiving preserved pages https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/b187ad4af7ef [6/8] oracle/mm: zap the preserved ranges of the old mm after copying them https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/7969d34b2578 [7/8] exec: protect preserved memory against surviving shared-mm tasks https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/f6b7a0cfa0ba [8/8] selftests/mm: test memory preservation across exec https://bitbucket.org/virtuozzocore/vzkernel.vzs/commits/d2f2c741fe35 -- Konstantin Khorenko, Virtuozzo Linux Kernel Team _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel