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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F52BC433F5 for ; Thu, 18 Nov 2021 08:51:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5521461BE3 for ; Thu, 18 Nov 2021 08:51:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244799AbhKRIyy (ORCPT ); Thu, 18 Nov 2021 03:54:54 -0500 Received: from linux.microsoft.com ([13.77.154.182]:59820 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243365AbhKRIyq (ORCPT ); Thu, 18 Nov 2021 03:54:46 -0500 Received: by linux.microsoft.com (Postfix, from userid 1109) id 9B13C20C63DD; Thu, 18 Nov 2021 00:51:46 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 9B13C20C63DD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1637225506; bh=J9rOJ6jfJ1HltNYB2odhwK1CJrGxLwIZp7w3haTv62Q=; h=From:To:Cc:Subject:Date:From; b=ad8O9sGRH3y0zJH5so0jJH1CP3UjGR68+cYMifTEHV5tPN5vfBnbZb95P0xdWkseS 4R8v5P32lFz1+7+xvzy8km65zFGQTzzHxPt06LAVjzgjyxUV7MNNSAsgg9P3lZmaRO Tnyr5hTPFZPH3EkThdBQQxkMaGED/TJ9hF4sVImw= From: Sunil Muthuswamy To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, maz@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, lorenzo.pieralisi@arm.com, robh@kernel.org, kw@linux.com, bhelgaas@google.com, arnd@arndb.de Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org, Sunil Muthuswamy Subject: [PATCH v6 0/2] PCI: hv: Hyper-V vPCI for arm64 Date: Thu, 18 Nov 2021 00:51:28 -0800 Message-Id: <1637225490-2213-1-git-send-email-sunilmut@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sunil Muthuswamy Current Hyper-V vPCI code only compiles and works for x86. There are some hardcoded assumptions about the architectural IRQ chip and other arch defines. Add support for Hyper-V vPCI for arm64 by first breaking the current hard coded dependency using a set of new interfaces and implementing those for x86 first. That is in the first patch. The second patch adds support for Hyper-V vPCI for arm64 by implementing the above mentioned interfaces. That is done by introducing a Hyper-V vPCI specific MSI IRQ domain & chip for allocating SPI vectors. changes in v1 -> v2: - Moved the irqchip implementation to drivers/pci as suggested by Marc Zyngier - Addressed Multi-MSI handling issues identified by Marc Zyngier - Addressed lock/synchronization primitive as suggested by Marc Zyngier - Addressed other code feedback from Marc Zyngier changes in v2 -> v3: - Addressed comments from Bjorn Helgaas about patch formatting and verbiage - Using 'git send-email' to ensure that the patch series is correctly threaded. Feedback by Bjorn Helgaas - Fixed Hyper-V vPCI build break for module build, reported by Boqun Feng changes in v3 -> v4: - Removed the separate file for IRQ chip that was there in previous iterations and moved the IRQ chip implementation to pci-hyperv.c. Feedback by Michael Kelley and Marc Zyngier. - Addressed various comments from Marc Zyngier about structuring and layout. - Addressed comment from Marc Zyngier about IRQ affinity and other miscellaneous comments. changes in v4 -> v5: - Fixed an issue with picking the right cpu for irq affinity, identified by Marc Zyngier. changes in v5 -> v6: - Minor comment updates suggested by Michael Kelley. Sunil Muthuswamy (2): PCI: hv: Make the code arch neutral by adding arch specific interfaces arm64: PCI: hv: Add support for Hyper-V vPCI arch/arm64/include/asm/hyperv-tlfs.h | 9 + arch/x86/include/asm/hyperv-tlfs.h | 33 ++++ arch/x86/include/asm/mshyperv.h | 7 - drivers/pci/Kconfig | 2 +- drivers/pci/controller/Kconfig | 2 +- drivers/pci/controller/pci-hyperv.c | 281 ++++++++++++++++++++++++--- include/asm-generic/hyperv-tlfs.h | 33 ---- 7 files changed, 300 insertions(+), 67 deletions(-) base-commit: fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf -- 2.25.1