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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 44969C6778C for ; Tue, 3 Jul 2018 13:42:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F3BAC22464 for ; Tue, 3 Jul 2018 13:42:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F3BAC22464 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753496AbeGCNmO (ORCPT ); Tue, 3 Jul 2018 09:42:14 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:48570 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753370AbeGCNmM (ORCPT ); Tue, 3 Jul 2018 09:42:12 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9B5BAC320; Tue, 3 Jul 2018 13:42:11 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9CB42111AF02; Tue, 3 Jul 2018 13:42:07 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org Cc: Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Roman Kagan , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , "Michael Kelley (EOSG)" , Mohammed Gamal , Cathy Avery , Wanpeng Li , linux-kernel@vger.kernel.org Subject: [PATCH v4 0/5] KVM: x86: hyperv: PV IPI support for Windows guests Date: Tue, 3 Jul 2018 15:42:01 +0200 Message-Id: <20180703134206.27240-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 03 Jul 2018 13:42:11 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 03 Jul 2018 13:42:11 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'vkuznets@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes since v3 [Roman Kagan]: - Don't use vcpu_id in kvm_make_vcpus_request_mask to avoid dealing with sparse CPU masks. - Create get_vcpu_idx_by_vpidx() and use it in get_vcpu_by_vpidx() and kvm_hv_flush_tlb(). Using hypercall for sending IPIs is faster because this allows to specify any number of vCPUs (even > 64 with sparse CPU set), the whole procedure will take only one VMEXIT. Same as PV TLB flush, this allows Windows guests having > 64 vCPUs to boot on KVM when Hyper-V extensions are enabled. Vitaly Kuznetsov (5): KVM: x86: hyperv: enforce vp_index < KVM_MAX_VCPUS KVM: x86: hyperv: optimize 'all cpus' case in kvm_hv_flush_tlb() KVM: x86: hyperv: use get_vcpu_by_vpidx() in kvm_hv_flush_tlb() x86/hyper-v: rename ipi_arg_{ex,non_ex} structures KVM: x86: hyperv: implement PV IPI send hypercalls Documentation/virtual/kvm/api.txt | 8 ++ arch/x86/hyperv/hv_apic.c | 12 +-- arch/x86/include/asm/hyperv-tlfs.h | 16 +-- arch/x86/kvm/hyperv.c | 211 +++++++++++++++++++++++++++---------- arch/x86/kvm/trace.h | 42 ++++++++ arch/x86/kvm/x86.c | 1 + include/uapi/linux/kvm.h | 1 + virt/kvm/kvm_main.c | 6 +- 8 files changed, 224 insertions(+), 73 deletions(-) -- 2.14.4