From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751619AbdFCAHq (ORCPT ); Fri, 2 Jun 2017 20:07:46 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:47027 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751515AbdFCAHp (ORCPT ); Fri, 2 Jun 2017 20:07:45 -0400 From: Ankur Arora To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org Cc: boris.ostrovsky@oracle.com, jgross@suse.com, Ankur Arora Subject: [PATCH 0/5] xen/pvh*: Support > 32 VCPUs at restore Date: Fri, 2 Jun 2017 17:05:57 -0700 Message-Id: <1496448362-26558-1-git-send-email-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.7.4 X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series fixes a bunch of issues in the xen_vcpu setup logic. Simplify xen_vcpu related code: code refactoring in advance of the rest of the patch series. Support > 32 VCPUs at restore: unify all vcpu restore logic in xen_vcpu_restore() and support > 32 VCPUs for PVH*. Remove vcpu info placement from restore (!SMP): some pv_ops are marked RO after init so lets not redo xen_setup_vcpu_info_placement at restore. Handle xen_vcpu_setup() failure in hotplug: handle vcpu_info registration failures by propagating them from the cpuhp-prepare callback back up to the cpuhp logic. Handle xen_vcpu_setup() failure at boot: pull CPUs (> MAX_VIRT_CPUS) down if we fall back to xen_have_vcpu_info_placement = 0. Tested with various combinations of PV/PVHv2/PVHVM save/restore and cpu-hotadd-hotremove. Also tested by simulating failure in VCPUOP_register_vcpu_info. Please review. Ankur Arora (5): xen/vcpu: Simplify xen_vcpu related code xen/pvh*: Support > 32 VCPUs at domain restore xen/pv: Fix OOPS on restore for a PV, !SMP domain xen/vcpu: Handle xen_vcpu_setup() failure in hotplug xen/vcpu: Handle xen_vcpu_setup() failure at boot arch/x86/xen/enlighten.c | 154 +++++++++++++++++++++++++++++++------------ arch/x86/xen/enlighten_hvm.c | 33 ++++------ arch/x86/xen/enlighten_pv.c | 87 +++++++++++------------- arch/x86/xen/smp.c | 31 +++++++++ arch/x86/xen/smp.h | 2 + arch/x86/xen/smp_hvm.c | 14 +++- arch/x86/xen/smp_pv.c | 6 +- arch/x86/xen/suspend_hvm.c | 11 +--- arch/x86/xen/xen-ops.h | 3 +- include/xen/xen-ops.h | 2 + 10 files changed, 218 insertions(+), 125 deletions(-) -- 2.7.4