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=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 3E5B3C4338F for ; Wed, 4 Aug 2021 16:44:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 18A0E60238 for ; Wed, 4 Aug 2021 16:44:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239608AbhHDQo0 (ORCPT ); Wed, 4 Aug 2021 12:44:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:60438 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239441AbhHDQoP (ORCPT ); Wed, 4 Aug 2021 12:44:15 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 36CB260238; Wed, 4 Aug 2021 16:44:01 +0000 (UTC) Date: Wed, 4 Aug 2021 17:43:58 +0100 From: Catalin Marinas To: Michael Kelley Cc: "will@kernel.org" , Mark Rutland , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "linux-efi@vger.kernel.org" , "wei.liu@kernel.org" , KY Srinivasan , Stephen Hemminger , "ardb@kernel.org" Subject: Re: [PATCH v12 0/5] Enable Linux guests on Hyper-V on ARM64 Message-ID: <20210804164358.GE4857@arm.com> References: <1628092359-61351-1-git-send-email-mikelley@microsoft.com> <20210804162555.GD4857@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 04, 2021 at 04:39:02PM +0000, Michael Kelley wrote: > From: Catalin Marinas Sent: Wednesday, August 4, 2021 9:26 AM > > > > On Wed, Aug 04, 2021 at 08:52:34AM -0700, Michael Kelley wrote: > > > This series enables Linux guests running on Hyper-V on ARM64 > > > hardware. New ARM64-specific code in arch/arm64/hyperv initializes > > > Hyper-V and its hypercall mechanism. Existing architecture > > > independent drivers for Hyper-V's VMbus and synthetic devices just > > > work when built for ARM64. Hyper-V code is built and included in > > > the image and modules only if CONFIG_HYPERV is enabled. > > [...] > > > Hyper-V on ARM64 runs with a 4 Kbyte page size, but allows guests > > > with 4K/16K/64K page size. Linux guests with this patch series > > > work with all three supported ARM64 page sizes. > > > > > > The Hyper-V vPCI driver at drivers/pci/host/pci-hyperv.c has > > > x86/x64-specific code and is not being built for ARM64. Enabling > > > Hyper-V vPCI devices on ARM64 is in progress via a separate set > > > of patches. > > > > > > This patch set is based on the linux-next20210720 code tree. > > > > Is it possible to rebase this on top of -rc3? Are there any > > dependencies or do you plan to upstream this via a different tree? > > There are dependencies on changes in the hyperv-next tree > (https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/) > which is why you are getting the build errors. The changes > common-ized some code between the x86 side and previous > versions of this patch set (and fixed the #include nmi.h problem). > So the code would most naturally go upstream through that tree. In that case, for this series: Acked-by: Catalin Marinas I don't think there'd be conflicts with the arm64 changes but we can spot them early in -next. -- Catalin