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 E4FB8C77B7A for ; Tue, 16 May 2023 14:22:17 +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:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lIRbF6mJAIS3oyyfzHZcGlI0UbbDnEfvltj0pjkd6ss=; b=jTOgaEzAYNf6JR OVDRTeKAgBOJFI7r1b+7MZMCyak8ku88o91tMcLCFHcmeq09zJBUt8XR7BO8rot4UxIt4CkvaYcoP qnr0xgjP1k3FR20W84YPhvrof9Zb9oyA+yDAd7mIdGBuY/cyB1693q3uSW3wo9Oa1N99li6Q+WYAK mys2JXisFmXLA0EDVdhN/WiznsVfsfDQa0hu6uiGEEMy7cFOiBHozKx78XpzYjxHy54H3Cum65ZiY WtGuWRT+CvE4E4IXLx0aMS+F6f7fBIH65YpYvJ4Zs7IxkYeFW18uE/yY6mgq5wNQ2Bl1PggHwySZF SQTr2WmjDWQRZjHh97BQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pyvYs-0064QR-1N; Tue, 16 May 2023 14:21:58 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pyvYg-0064Jw-1q for linux-arm-kernel@lists.infradead.org; Tue, 16 May 2023 14:21:47 +0000 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1684246903; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vg09Y5YjXDeSsRkNJWUxw42VISG1TCYNQgF4xEhqqgo=; b=XWTWqgBQCSCM0oJYbloXuND8V9n7Wa3+ZIIzDc8aWkxB/TURyn9EYY/5WPO+3eZFAjaAzM 5KTq5DirF4j6Gf3O4v3X8J6/qnN59/uKdrKgg3WeZxBRpAz4SL4XFe9VhfdEpsZsGLzg6D TiUpUOXuin3yArRu+zgNQv6D5qfP6KPh9rWqnXbjVTbuZ/gbmYuGIinHRWVSvXdlXzA0UU ZqDRzVE8VSJ6qjf4W5/mgbPj6IVOelwRRXh5zEKXpn00/PphU7z+cXeGeFLM1LqWzYhme1 UFAiTBIlPfB8edZ31j6NCczmasfx5YyVhrxCXIhDpaQM46XlvBJ0zQPJYR/nqg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1684246903; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vg09Y5YjXDeSsRkNJWUxw42VISG1TCYNQgF4xEhqqgo=; b=Qxjn5yvQQlVaBj4ForulDwOUkvNLURJ1NsymohxdsVuxK0qSZOxgwPDoTEypN7F9dyonYF 0QOuTVHbm0AJAWCw== To: Baoquan He Cc: "Russell King (Oracle)" , Andrew Morton , linux-mm@kvack.org, Christoph Hellwig , Uladzislau Rezki , Lorenzo Stoakes , Peter Zijlstra , John Ogness , linux-arm-kernel@lists.infradead.org, Mark Rutland , Marc Zyngier , x86@kernel.org Subject: Re: Excessive TLB flush ranges In-Reply-To: References: <87a5y5a6kj.ffs@tglx> <87353x9y3l.ffs@tglx> <87zg658fla.ffs@tglx> <87r0rg93z5.ffs@tglx> <87ilcs8zab.ffs@tglx> <87fs7w8z6y.ffs@tglx> <874joc8x7d.ffs@tglx> Date: Tue, 16 May 2023 16:21:42 +0200 Message-ID: <87r0rg73wp.ffs@tglx> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230516_072146_754139_5B048EBC X-CRM114-Status: GOOD ( 10.96 ) X-BeenThere: linux-arm-kernel@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="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, May 16 2023 at 18:05, Baoquan He wrote: > On 05/16/23 at 11:03am, Thomas Gleixner wrote: >> static bool __purge_vmap_area_lazy(unsigned long start, unsigned long end) >> { >> - unsigned long resched_threshold; >> + unsigned long resched_threshold, num_entries = 0, num_alias_entries = 0; >> + struct vmap_area alias_va = { .va_start = start, .va_end = end }; > > Note that the start and end passed in are not only direct map which is > alias of va. It is the range which has done merging on direct map range > and all dirty range of vbq in _vm_unmap_aliases(). We may need to append > below draft code on your patch to at least flush the direct map range > separately. Indeed. Missed that one. What a maze. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel