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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9AF0DC282C0 for ; Wed, 23 Jan 2019 08:01:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6791721019 for ; Wed, 23 Jan 2019 08:01:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="Umytq2Jo"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="jN5K2tsl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726207AbfAWIBY (ORCPT ); Wed, 23 Jan 2019 03:01:24 -0500 Received: from new3-smtp.messagingengine.com ([66.111.4.229]:47641 "EHLO new3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725973AbfAWIBX (ORCPT ); Wed, 23 Jan 2019 03:01:23 -0500 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailnew.nyi.internal (Postfix) with ESMTP id 7FF3D14BAD; Wed, 23 Jan 2019 03:01:21 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Wed, 23 Jan 2019 03:01:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm2; bh=ulhyAha0xUuV03h2GOwKpv4Mlbw hsRhr/9iZEEBrPFQ=; b=Umytq2JoRXoQSVFBfQVl62j5VlgljznKqbh7UvO6lCw 33CzpPZCmP04/1Y3Xi6KilFIf7ogn/fJnnCiNbwttov62USD7NnNPM+Os+618Abj 6ttuUcFZ+K0HmQfklNBix+OoaUvPgRC5WXltfKERXYCSYVsT8ABBexBYxyMd63Bq +MBw+us+KSIWGN0hK/UVX++SumEswkJXtKcakRD3FoMaH9GULRIotzrkcrXWa50F EQCmJkq2Yf7z0cHXOPdlOa7uKaU8buIQj90iDx764OY33Fubl9SsLAP3XoMchWLP WA8vnUQRgr8YZrKD6Ybevh8TmwoWdRfDjVySoGx8oGw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=ulhyAh a0xUuV03h2GOwKpv4MlbwhsRhr/9iZEEBrPFQ=; b=jN5K2tsluvEdFayY+52dLa EYmmLT1OphQJZH4HxCrfDbV0XObU6AvG5ZTiiS5vLwoINQoKcc3jaok8JJ0wMpDT RYim9vdLlKN78zcqa3SldUKZ4RxjfQ5aNbGxPNwLB7Ieok1gov8bKG8wsHZQ9l4g vJ1wLWPp7c4oPGQ3TV3oHFul71qkzeAp5JOka0D/POvYMBB+zncIuRbKFS4b9anK qVJMGWffwGSH2vlYT6xWy4dFQGK+RbiLEMAfc/z1P2czGtZSjoLgbecXZk/oBx9W exlboeA9SI33JPuESNVynxygkeuVveN4aeM3pcIrDsV8J2Bl62nWRncb6oiC/tig == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedtledrheelgdduudeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfquhhtnecuuegrihhlohhuthemucef tddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuphgrmhfkphculdeftd dtmdenucfjughrpeffhffvuffkfhggtggujggfsehttdertddtredvnecuhfhrohhmpefi rhgvghcumffjuceoghhrvghgsehkrhhorghhrdgtohhmqeenucfkphepkeefrdekiedrke elrddutdejnecurfgrrhgrmhepmhgrihhlfhhrohhmpehgrhgvgheskhhrohgrhhdrtgho mhenucevlhhushhtvghrufhiiigvpedt X-ME-Proxy: Received: from localhost (5356596b.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id AD08710310; Wed, 23 Jan 2019 03:01:20 -0500 (EST) Date: Wed, 23 Jan 2019 09:01:19 +0100 From: Greg KH To: Ajay Kaher Cc: kys@microsoft.com, haiyangz@microsoft.com, jloeser@microsoft.com, sthemmin@microsoft.com, sashal@kernel.org, mikelley@microsoft.com, decui@microsoft.com, stable@vger.kernel.org, srivatsab@vmware.com, amakhalov@vmware.com Subject: Re: [PATCH 1/3] PCI: hv: Allocate physically contiguous hypercall params buffer Message-ID: <20190123080119.GC7597@kroah.com> References: <1548257912-18273-1-git-send-email-akaher@vmware.com> <1548257912-18273-2-git-send-email-akaher@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1548257912-18273-2-git-send-email-akaher@vmware.com> User-Agent: Mutt/1.11.2 (2019-01-07) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Wed, Jan 23, 2019 at 09:08:30PM +0530, Ajay Kaher wrote: > hv_do_hypercall() assumes that we pass a segment from a physically > contiguous buffer. A buffer allocated on the stack may not work if > CONFIG_VMAP_STACK=y is set. > > Use kmalloc() to allocate this buffer. > > Signed-off-by: Ajay Kaher > --- > drivers/pci/host/pci-hyperv.c | 29 +++++++++++++++++++---------- > 1 file changed, 19 insertions(+), 10 deletions(-) No hint as to what the upstream git commit id is here? Same for all of these patches, I'm not reviewing beyond this one...