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=-9.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 1BD9BC4338F for ; Mon, 2 Aug 2021 16:02:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D5AB660EC0 for ; Mon, 2 Aug 2021 16:02:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D5AB660EC0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:References:In-Reply-To: Subject:Cc:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QuBz+vtpRbYTxIIr/1faSEhPRGNKnPcwEajiXw4giHs=; b=naYBgkDy4gilha PFK8eDTwo9FGGnVG9W2s0A+B7R/C9Us47WVCzE2IJ8nvq0/Tjb+eSksiOWSyT8gQHPVfyy5p3Rl/+ RerPXbd+csUnoRdEZl8xdlL/tsbVSKwUvFF5GDtEhMHIB9qYgYjigYEG2gRzXySYHh7ctcu/jw00T kF14JDwX8hTdkkBCyo120/qNPvJDFTPoq5iUvBiSAYEX7OEM0ZtIvUinIuS/tyRHtN9J7cXatcgfp LeJu1MYR5/84oHm5F8tpJO/Zo9py0R4Fx79VXZapG9Ivwmqh7EU+g22dRYxhVjoQyuImm23E5idf3 YtlK3L+SOvyjG+QoqFUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mAaNJ-00H5sM-Cp; Mon, 02 Aug 2021 16:01:09 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mAaNF-00H5rS-Di for linux-arm-kernel@lists.infradead.org; Mon, 02 Aug 2021 16:01:06 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1186060243; Mon, 2 Aug 2021 16:01:05 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mAaNC-002VuC-LV; Mon, 02 Aug 2021 17:01:03 +0100 Date: Mon, 02 Aug 2021 17:01:02 +0100 Message-ID: <87k0l325vl.wl-maz@kernel.org> From: Marc Zyngier To: Michael Kelley Cc: will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, 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, kys@microsoft.com, sthemmin@microsoft.com, ardb@kernel.org Subject: Re: [PATCH v11 0/5] Enable Linux guests on Hyper-V on ARM64 In-Reply-To: <1626793023-13830-1-git-send-email-mikelley@microsoft.com> References: <1626793023-13830-1-git-send-email-mikelley@microsoft.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: mikelley@microsoft.com, will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com, 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, kys@microsoft.com, sthemmin@microsoft.com, ardb@kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210802_090105_542004_33A06D4B X-CRM114-Status: GOOD ( 28.71 ) 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, 20 Jul 2021 15:56:58 +0100, 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. > > The five patches are organized as follows: > > 1) Add definitions and functions for making Hyper-V hypercalls > and getting/setting virtual processor registers provided by > Hyper-V > > 2) Add the function needed by the arch independent VMbus driver > for reporting a panic to Hyper-V. > > 3) Add Hyper-V initialization code and utility functions that > report Hyper-v status. > > 4) Export screen_info so it may be used by the Hyper-V frame buffer > driver built as a module. It is already exported for x86, > powerpc, and alpha architectures. > > 5) Make CONFIG_HYPERV selectable on ARM64 in addition to x86/x64. > > 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. > > Changes in v11: > * Drop the previous Patch 1 as the fixes have already been > separately accepted upstream. > * Drop the previous Patch 3 for enabling Hyper-V enlightened > clocks/timers. Hyper-V is now offering the full ARM64 > architectural Generic Timer in guest VMs, so the existing > arch_arch_timer.c driver just works. [Mark Rutland, Marc > Zyngier] Thanks for doing this. Assuming you fix the issue I mentioned in my reply to patch #3. FWIW: Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel