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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 1AEECC3A59F for ; Fri, 30 Aug 2019 01:36:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E200721726 for ; Fri, 30 Aug 2019 01:36:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727781AbfH3Bgp (ORCPT ); Thu, 29 Aug 2019 21:36:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46744 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727729AbfH3Bgl (ORCPT ); Thu, 29 Aug 2019 21:36:41 -0400 Received: from mail-pl1-f197.google.com (mail-pl1-f197.google.com [209.85.214.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7411436955 for ; Fri, 30 Aug 2019 01:36:41 +0000 (UTC) Received: by mail-pl1-f197.google.com with SMTP id v13so3111547plo.4 for ; Thu, 29 Aug 2019 18:36:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cG9laiQiwZAynctMYNHvaREftIm3iI6/rD0VII6FmvI=; b=jyl0s76YgtMuBJR8Zg7NKpvMnxC655n3DVygwvwFEmZN2Q43Xn4RrhoeBb5RC4qo1i i/VLJmrmooPNEEP0B2c3cIAFUpt3nDMTWugJKN/1zYjsDtJVNUMXgz6TwATFzd9uTqrh 8y5s/giR9ZbtECPJZ+ZCQpZzvHHSV+ax+u79zZaTgWkoPNEoAAhr7zgLl2ZvX9yHr8SZ L4pFAR6opdU60/agZu8GCy9NMDmItKYT9mu5GoPvNFk1EJ9dqWR0RvIHjM4FwujfID6U u+yXdv7ohigCedvTrwgGeab89+spFQS3PWaDBW5DBX7BBJ2p8+IlFZwpaAdc121e7mku kCCg== X-Gm-Message-State: APjAAAUjMfczmxtfqo86eA8jFpZdYmiGxzmJVyrX0sCuBm2aJ840uveK +aCM0gSp3NWMlT2n8jMaDJLNTA49/cw43otVkQiJ9VG8f5tnNSxzp8s5lbLfk3kz9/IdrbmeP6K Hw/kat1LA1lz4o/6TTdJ069qe X-Received: by 2002:a17:902:bc4c:: with SMTP id t12mr12769478plz.90.1567129000484; Thu, 29 Aug 2019 18:36:40 -0700 (PDT) X-Google-Smtp-Source: APXvYqwqi0mNP2BvypvBbTDJ2bf0BDP+L7sZO32gPMnpdcs3+HDqx9VFJs3wnzAMp4KWMDyc1kQt3w== X-Received: by 2002:a17:902:bc4c:: with SMTP id t12mr12769467plz.90.1567129000329; Thu, 29 Aug 2019 18:36:40 -0700 (PDT) Received: from xz-x1.redhat.com ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id l3sm3426323pjq.24.2019.08.29.18.36.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Aug 2019 18:36:39 -0700 (PDT) From: Peter Xu To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini , Vitaly Kuznetsov , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Thomas Huth , Andrew Jones , peterx@redhat.com Subject: [PATCH v3 2/4] KVM: selftests: Create VM earlier for dirty log test Date: Fri, 30 Aug 2019 09:36:17 +0800 Message-Id: <20190830013619.18867-3-peterx@redhat.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190830013619.18867-1-peterx@redhat.com> References: <20190830013619.18867-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since we've just removed the dependency of vm type in previous patch, now we can create the vm much earlier. Note that to move it earlier we used an approximation of number of extra pages but it should be fine. This prepares for the follow up patches to finally remove the duplication of guest mode parsings. Reviewed-by: Andrew Jones Signed-off-by: Peter Xu --- tools/testing/selftests/kvm/dirty_log_test.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c index 135cba5c6d0d..efb7746a7e99 100644 --- a/tools/testing/selftests/kvm/dirty_log_test.c +++ b/tools/testing/selftests/kvm/dirty_log_test.c @@ -230,6 +230,9 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid, return vm; } +#define DIRTY_MEM_BITS 30 /* 1G */ +#define PAGE_SHIFT_4K 12 + static void run_test(enum vm_guest_mode mode, unsigned long iterations, unsigned long interval, uint64_t phys_offset) { @@ -239,6 +242,18 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations, uint64_t max_gfn; unsigned long *bmap; + /* + * We reserve page table for 2 times of extra dirty mem which + * will definitely cover the original (1G+) test range. Here + * we do the calculation with 4K page size which is the + * smallest so the page number will be enough for all archs + * (e.g., 64K page size guest will need even less memory for + * page tables). + */ + vm = create_vm(mode, VCPU_ID, + 2ul << (DIRTY_MEM_BITS - PAGE_SHIFT_4K), + guest_code); + switch (mode) { case VM_MODE_P52V48_4K: guest_pa_bits = 52; @@ -285,7 +300,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations, * A little more than 1G of guest page sized pages. Cover the * case where the size is not aligned to 64 pages. */ - guest_num_pages = (1ul << (30 - guest_page_shift)) + 16; + guest_num_pages = (1ul << (DIRTY_MEM_BITS - guest_page_shift)) + 16; host_page_size = getpagesize(); host_num_pages = (guest_num_pages * guest_page_size) / host_page_size + !!((guest_num_pages * guest_page_size) % host_page_size); @@ -302,8 +317,6 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations, bmap = bitmap_alloc(host_num_pages); host_bmap_track = bitmap_alloc(host_num_pages); - vm = create_vm(mode, VCPU_ID, guest_num_pages, guest_code); - #ifdef USE_CLEAR_DIRTY_LOG struct kvm_enable_cap cap = {}; -- 2.21.0