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=-4.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 53A49C07E99 for ; Mon, 12 Jul 2021 18:24:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3CBCB61242 for ; Mon, 12 Jul 2021 18:24:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234916AbhGLS0x (ORCPT ); Mon, 12 Jul 2021 14:26:53 -0400 Received: from mail-wr1-f52.google.com ([209.85.221.52]:43794 "EHLO mail-wr1-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230477AbhGLS0x (ORCPT ); Mon, 12 Jul 2021 14:26:53 -0400 Received: by mail-wr1-f52.google.com with SMTP id a13so26874148wrf.10; Mon, 12 Jul 2021 11:24:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=Bh+Pa3oXCjpgXW78zCJeL/+8I2owFHmqqcZPnmGZmAQ=; b=N8WvpLyXlLSXAucM3LmUf2peH5b7z3vKs8MsPFRdB1rzcXWayrLcejby+/MFtXNgK3 CNxw8XBvLMOFRayXhkjnigCHAE+zqtmQ1BZlgL5IOTtPY2m+mtJq9LVj5WrHrhaoCUFw ZsOf4/zKT5cMZmKwl3/7s9wEEUBScH7AkUq72WsCIJFC5a8xIQ5kat4aeDr01unt0M1J Ag996mqKyEv1G/u05gm4U0y8VbVYvSNRxYtL+e4NwnKgwB3OBZxZSM/HisoDZ6Y1dQ6u C6rs1xKGG53/BNjbwwAY1QvusVd5wQn/eRalass6aK7V9M7ZABUweWIBCmo4q5scwd7I iojw== X-Gm-Message-State: AOAM533rPt7DMcYxWCtncFW4xncgG0dk2cMOS4Gzoy3Y93NAmedNgPB2 pfjIXUPKWtyBUm6GTGnB8YM= X-Google-Smtp-Source: ABdhPJynsgbOLnextiu8xWZLVxZ8wvY0+7Twq5M9RxxKfotQJyxvGq6PakKXQrL34zS3R14oIYs6Xw== X-Received: by 2002:adf:f848:: with SMTP id d8mr392950wrq.308.1626114242934; Mon, 12 Jul 2021 11:24:02 -0700 (PDT) Received: from liuwe-devbox-debian-v2 ([51.145.34.42]) by smtp.gmail.com with ESMTPSA id w22sm202821wmc.4.2021.07.12.11.24.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Jul 2021 11:24:02 -0700 (PDT) Date: Mon, 12 Jul 2021 18:24:00 +0000 From: Wei Liu To: Michael Kelley Cc: sthemmin@microsoft.com, kys@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, arnd@arndb.de, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: [PATCH 1/3] Drivers: hv: Make portions of Hyper-V init code be arch neutral Message-ID: <20210712182400.yze3wochnyccaflw@liuwe-devbox-debian-v2> References: <1626060316-2398-1-git-send-email-mikelley@microsoft.com> <1626060316-2398-2-git-send-email-mikelley@microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1626060316-2398-2-git-send-email-mikelley@microsoft.com> Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On Sun, Jul 11, 2021 at 08:25:14PM -0700, Michael Kelley wrote: [...] > +int hv_common_cpu_init(unsigned int cpu) > +{ > + void **inputarg, **outputarg; > + u64 msr_vp_index; > + gfp_t flags; > + int pgcount = hv_root_partition ? 2 : 1; > + > + /* hv_cpu_init() can be called with IRQs disabled from hv_resume() */ > + flags = irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL; > + > + inputarg = (void **)this_cpu_ptr(hyperv_pcpu_input_arg); > + *inputarg = kmalloc(pgcount * HV_HYP_PAGE_SIZE, flags); This is changed from alloc_pages to kmalloc. Does it ensure the alignment is still correct? Wei.