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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 970E5C433F5 for ; Thu, 11 Nov 2021 16:32:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73EA5610C8 for ; Thu, 11 Nov 2021 16:32:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234165AbhKKQe7 (ORCPT ); Thu, 11 Nov 2021 11:34:59 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:34614 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233921AbhKKQe5 (ORCPT ); Thu, 11 Nov 2021 11:34:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636648328; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xONcWka4yJg1UQhheAmGmQGTeSz62+BFAMVpGU5MQlM=; b=b5VHZA4lE0grCO8v9DYCw6Gw5N4avPAGu/nRtigxTX2mDrmF+YGisRuFk0++ZfCWM5muus MM+lAKwbmY3d5PCR8bVHvBhNstdzkbhE+k5JKMiQM9zt6DWvtgW7uro4hOGG9UJ2O/NM7C c9YmYUKCMOvon9ujz0lmmfDcj+EDfWw= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-470-5RC0aCMXP_KbEp8tnKtp3g-1; Thu, 11 Nov 2021 11:32:06 -0500 X-MC-Unique: 5RC0aCMXP_KbEp8tnKtp3g-1 Received: by mail-wm1-f70.google.com with SMTP id l6-20020a05600c4f0600b0033321934a39so2898513wmq.9 for ; Thu, 11 Nov 2021 08:32:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=xONcWka4yJg1UQhheAmGmQGTeSz62+BFAMVpGU5MQlM=; b=EFtRvLblF5J416doKPB5VN378i8cxS7WApHPqydncO2fZaJVIi6Ev/lyP+O2zQNitd +TrpT759rpKbM9eEOfDNDd8yrlfYDbCDOPjMVgRUqLp5aRGQVsZygshBce+f/a3Ymh0A 8Kpe7gau3Fw2KigSep9Ecjcp0uyz61M1M3KSbFKVrFlPK4ApvifqktN1Dq8qp1BLrTJJ VGhntoSbaEaY3bplb9vNb+CARo1slf3OTz7/XDxh+wQ6gsd1CgjfgbUu5LR5uXMeTknh I6FDNwYBrNe5Zwclu0l0WDtbRdsy02hf9HdzItO8+r8t7c7Q2YQ6/7JMtJm4beg5u40N XW3g== X-Gm-Message-State: AOAM53182N0s9aZL2662WqKQfjT8LGCEY3UhVvIrPdBDHhTEj698Dikq +IWUvKu91+aL3dUJYLwEW77PYPtnMc+RDy7yz4xwq2mzwh258Nw78hHhDaQithuJm1dq5iuuJBZ pfkUnKo7GaZBDcuhsg2hK4eXL X-Received: by 2002:a05:600c:3553:: with SMTP id i19mr26522385wmq.97.1636648325380; Thu, 11 Nov 2021 08:32:05 -0800 (PST) X-Google-Smtp-Source: ABdhPJxnDkUP6eGDmwtDENl8am0CL9MrNcHh26P8buehu4QWyCT5kMI7SNPBa0SKMZxtky6JcBjzZg== X-Received: by 2002:a05:600c:3553:: with SMTP id i19mr26522360wmq.97.1636648325165; Thu, 11 Nov 2021 08:32:05 -0800 (PST) Received: from ?IPV6:2001:b07:6468:f312:63a7:c72e:ea0e:6045? ([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.gmail.com with ESMTPSA id l22sm3253329wmp.34.2021.11.11.08.32.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Nov 2021 08:32:04 -0800 (PST) Message-ID: <4a3c7be7-12fa-6e47-64eb-02e6c5be5dbc@redhat.com> Date: Thu, 11 Nov 2021 17:32:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH 0/5] KVM: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS and re-purpose it on x86 Content-Language: en-US To: Vitaly Kuznetsov , kvm@vger.kernel.org Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Eduardo Habkost , Marc Zyngier , Andrew Jones , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Mackerras , Michael Ellerman , kvm-ppc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Christian Borntraeger References: <20211111162746.100598-1-vkuznets@redhat.com> From: Paolo Bonzini In-Reply-To: <20211111162746.100598-1-vkuznets@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/11/21 17:27, Vitaly Kuznetsov wrote: > This is a comtinuation of "KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS" > (https://lore.kernel.org/kvm/20211111134733.86601-1-vkuznets@redhat.com/) > work. > > 1) Enforce KVM_CAP_NR_VCPUS <= KVM_CAP_MAX_VCPUS rule on all > architectures. [Sean Christopherson] > 2) Make KVM_CAP_NR_VCPUS return num_online_cpus() and not an arbitrary > value of '710' on x86. > > Everything but x86 was only 'eyeball tested', the change is trivial > but sorry in advance if I screwed up) Christian, can you look at this for s390? Returning a fixed value seems wrong for KVM_CAP_NR_VCPUS. Thanks, Paolo > Vitaly Kuznetsov (5): > KVM: arm64: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS > > arch/arm64/kvm/arm.c | 7 ++++++- > arch/mips/kvm/mips.c | 2 +- > arch/powerpc/kvm/powerpc.c | 4 ++-- > arch/riscv/kvm/vm.c | 2 +- > arch/x86/include/asm/kvm_host.h | 1 - > arch/x86/kvm/x86.c | 2 +- > 6 files changed, 11 insertions(+), 7 deletions(-) > 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 109BFC433EF for ; Thu, 11 Nov 2021 16:33:27 +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 D6580610C8 for ; Thu, 11 Nov 2021 16:33:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D6580610C8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com 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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KCA9v3oxsU58ka85BxRqrd/B1CW0shZwoJtU/+pN1zo=; b=puukdpLCT5vWox Bel2MAP5AKCQHDpZIf49BOw/QakQJw9Rb4ZwCv9eD5o/P0URSwvpN8iVy9zOuLOfmpvjOb6zLZ/lZ X2D+jRiAhdk+Xy/WAij25oYz0MUtOYU5K+pvTK4Q4uNbr76iNygPConkt/gJ2hC9YmzIb43uPEdPj 27Af82FmjnmJCtxrS/ThOwjgl2g8FWyaeHAwnBl0/b3ycGK5UyEL6FSF2pvv/cFWqksTYcKEB5BF3 YDjLdqYbTGGMdvqAFaLKGL4CdxH3CVIugFgsPNjWV9gUXEVkDI4nWKOi4hdLKjDdVjF4YFqB8+SV7 cKvHiZsMQMosZm1GSHfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mlCzl-008OCi-OM; Thu, 11 Nov 2021 16:32:14 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mlCzg-008OAm-Td for linux-arm-kernel@lists.infradead.org; Thu, 11 Nov 2021 16:32:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636648327; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xONcWka4yJg1UQhheAmGmQGTeSz62+BFAMVpGU5MQlM=; b=ZFk/12Nj960PWgtq5aTi8SV3sqMq8o+Mx1XZWpnHefGW9PTsRlbsUAsKmjOuxEgoGHdpJU 1WXY9Ik2MjHBAi/DS192hyAEJ/CX1m8kRVgtY31pPdAsecJ4atNTYqD4gTSPocg9aS4hAX zpr4gO3srTFIAzjEwMN2jfeuKmrduJI= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-61-S9RORRyPOwStDK9tuGu14w-1; Thu, 11 Nov 2021 11:32:06 -0500 X-MC-Unique: S9RORRyPOwStDK9tuGu14w-1 Received: by mail-wm1-f70.google.com with SMTP id m14-20020a05600c3b0e00b0033308dcc933so2903388wms.7 for ; Thu, 11 Nov 2021 08:32:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=xONcWka4yJg1UQhheAmGmQGTeSz62+BFAMVpGU5MQlM=; b=Gc7swNP0wNiOsyX0HxLYxKryJ5TJaKYHuLhcTZaA+R8IaYR4V2uHAaujI1CkbNc/ug G5GK1jlZK920G8TusYVRIZLWc7vKh5kLJIaSHKV4FOegcebbcsVefkeNtmuNyIosg9ub dPYjzAVEhtDG40fvezrz4eR57d98XQF0nNnSOwmZhJBm/kiWyzt+LmdyS2BcZvOlkWrE sAMNFJ/AfeiB5Nx7CxnAdP+19NSjZW3BmWXnUUEHaa+F/9jOPo4i30HctkQDAN/OxELE MFgo4KfyXk0yPbHxtsq37ROnQNzbT7l8c7Bv9j3SPvw+J2RPk5g/CuF20k4EXeu2QI4l +oDA== X-Gm-Message-State: AOAM5310tzt0ZmvcHTGDF0yHymnMNPM/sjFTtb1mixc+RaXv+WCV0lhr DW3Q+Xeyw3ZLRZxiIYkTz9Qid0IvooC/4sFJmRnIHhm+SHBkpeGTPt7uUTDNsyDxnVc6E/fYyzN 7+rSM/kN8LQjRQuROpUVSvXLp7iBtN3UI/iQ= X-Received: by 2002:a05:600c:3553:: with SMTP id i19mr26522404wmq.97.1636648325400; Thu, 11 Nov 2021 08:32:05 -0800 (PST) X-Google-Smtp-Source: ABdhPJxnDkUP6eGDmwtDENl8am0CL9MrNcHh26P8buehu4QWyCT5kMI7SNPBa0SKMZxtky6JcBjzZg== X-Received: by 2002:a05:600c:3553:: with SMTP id i19mr26522360wmq.97.1636648325165; Thu, 11 Nov 2021 08:32:05 -0800 (PST) Received: from ?IPV6:2001:b07:6468:f312:63a7:c72e:ea0e:6045? ([2001:b07:6468:f312:63a7:c72e:ea0e:6045]) by smtp.gmail.com with ESMTPSA id l22sm3253329wmp.34.2021.11.11.08.32.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Nov 2021 08:32:04 -0800 (PST) Message-ID: <4a3c7be7-12fa-6e47-64eb-02e6c5be5dbc@redhat.com> Date: Thu, 11 Nov 2021 17:32:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH 0/5] KVM: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS and re-purpose it on x86 To: Vitaly Kuznetsov , kvm@vger.kernel.org Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Eduardo Habkost , Marc Zyngier , Andrew Jones , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Mackerras , Michael Ellerman , kvm-ppc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Christian Borntraeger References: <20211111162746.100598-1-vkuznets@redhat.com> From: Paolo Bonzini In-Reply-To: <20211111162746.100598-1-vkuznets@redhat.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211111_083209_155715_B4CD96E1 X-CRM114-Status: GOOD ( 13.32 ) 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-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 11/11/21 17:27, Vitaly Kuznetsov wrote: > This is a comtinuation of "KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS" > (https://lore.kernel.org/kvm/20211111134733.86601-1-vkuznets@redhat.com/) > work. > > 1) Enforce KVM_CAP_NR_VCPUS <= KVM_CAP_MAX_VCPUS rule on all > architectures. [Sean Christopherson] > 2) Make KVM_CAP_NR_VCPUS return num_online_cpus() and not an arbitrary > value of '710' on x86. > > Everything but x86 was only 'eyeball tested', the change is trivial > but sorry in advance if I screwed up) Christian, can you look at this for s390? Returning a fixed value seems wrong for KVM_CAP_NR_VCPUS. Thanks, Paolo > Vitaly Kuznetsov (5): > KVM: arm64: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS > > arch/arm64/kvm/arm.c | 7 ++++++- > arch/mips/kvm/mips.c | 2 +- > arch/powerpc/kvm/powerpc.c | 4 ++-- > arch/riscv/kvm/vm.c | 2 +- > arch/x86/include/asm/kvm_host.h | 1 - > arch/x86/kvm/x86.c | 2 +- > 6 files changed, 11 insertions(+), 7 deletions(-) > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Date: Thu, 11 Nov 2021 16:32:00 +0000 Subject: Re: [PATCH 0/5] KVM: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS and re-purpose it on x86 Message-Id: <4a3c7be7-12fa-6e47-64eb-02e6c5be5dbc@redhat.com> List-Id: References: <20211111162746.100598-1-vkuznets@redhat.com> In-Reply-To: <20211111162746.100598-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Vitaly Kuznetsov , kvm@vger.kernel.org Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Eduardo Habkost , Marc Zyngier , Andrew Jones , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Mackerras , Michael Ellerman , kvm-ppc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Christian Borntraeger On 11/11/21 17:27, Vitaly Kuznetsov wrote: > This is a comtinuation of "KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS" > (https://lore.kernel.org/kvm/20211111134733.86601-1-vkuznets@redhat.com/) > work. > > 1) Enforce KVM_CAP_NR_VCPUS <= KVM_CAP_MAX_VCPUS rule on all > architectures. [Sean Christopherson] > 2) Make KVM_CAP_NR_VCPUS return num_online_cpus() and not an arbitrary > value of '710' on x86. > > Everything but x86 was only 'eyeball tested', the change is trivial > but sorry in advance if I screwed up) Christian, can you look at this for s390? Returning a fixed value seems wrong for KVM_CAP_NR_VCPUS. Thanks, Paolo > Vitaly Kuznetsov (5): > KVM: arm64: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS > KVM: x86: Drop arbitraty KVM_SOFT_MAX_VCPUS > > arch/arm64/kvm/arm.c | 7 ++++++- > arch/mips/kvm/mips.c | 2 +- > arch/powerpc/kvm/powerpc.c | 4 ++-- > arch/riscv/kvm/vm.c | 2 +- > arch/x86/include/asm/kvm_host.h | 1 - > arch/x86/kvm/x86.c | 2 +- > 6 files changed, 11 insertions(+), 7 deletions(-) >