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=-13.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 3A2DFC41604 for ; Wed, 7 Oct 2020 20:55:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E8E5E20872 for ; Wed, 7 Oct 2020 20:55:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gi195+tg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728766AbgJGUy7 (ORCPT ); Wed, 7 Oct 2020 16:54:59 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:36144 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728503AbgJGUxx (ORCPT ); Wed, 7 Oct 2020 16:53:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602104032; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6xHjUrHigWna5Zg5F0+gVJTiR0rRWsZLLLTG4Bqd1lY=; b=gi195+tgr14IM2eGj1eeJyi69hfadqlgmbvP+mTO5UAjx5PPu5R9+kNID6oRLsLoZrcrhf 7zgaXwGEuwfOiBD1FJSwy57KUtPotJjNjIi+N6/kaPJ9xpjEKR136NnE7Py+fegYv3BSWt fAzAKYxoayh/uDkbgGEyw2/4TWq7/SY= Received: from mail-qv1-f70.google.com (mail-qv1-f70.google.com [209.85.219.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-196-yvlFhFShNKiLMNvV9jNGWg-1; Wed, 07 Oct 2020 16:53:47 -0400 X-MC-Unique: yvlFhFShNKiLMNvV9jNGWg-1 Received: by mail-qv1-f70.google.com with SMTP id s8so2170130qvv.18 for ; Wed, 07 Oct 2020 13:53:47 -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=6xHjUrHigWna5Zg5F0+gVJTiR0rRWsZLLLTG4Bqd1lY=; b=n1sATdFEdOH2NZrcqVXvOdwJpB/H3VTCCBGf2RcQg0BMYhLFoWYY6hHbtebSa11m/z YsTE1NToFDeO+aW2jGVBBCUXKhwzZhbsc02IfWftaZCZcRsHZBDODXiaEdpKV4uaNFAe jK/meILOcInpUOI+je6BLvuAnm8+ZskpUg8cIAzXQXkEPBp87fLkRRrxsLlM+/UfYhn3 WWJ2oacw8OXb8QhufMNZKpuJYNQVwgqcp/amXACVypv7DmYL/hZIzNs/rEK8/EaqLcRc l+BrBCakN52u/jJ3r9+eFmMCwWEN7k+OkJXZTKuRm58BH2zXnr22TBdZ/3aSmPrVf84E pDcw== X-Gm-Message-State: AOAM5324eMez1qCUZMYRRO0CKRxCAtcO/QrnDQxzh7X69fnFSBKf9slq 03z3LLqwLjWilCInix3mAlPSYNw8RhpGFfQJtDLfNcZ2SUM75YVibYcwSbuYlbbbY7fs/lbJ/KO snDhY90RI6ixJFfhTJ7vybPtu X-Received: by 2002:a05:6214:1021:: with SMTP id k1mr4917686qvr.62.1602104027095; Wed, 07 Oct 2020 13:53:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxhNW2wS4ALCYIj39Y72wimsXW7vLV8Lzw2/w1VJ9gCyoPqXzDfIAWFbKr0zCK2lL3ThX9NOQ== X-Received: by 2002:a05:6214:1021:: with SMTP id k1mr4917670qvr.62.1602104026853; Wed, 07 Oct 2020 13:53:46 -0700 (PDT) Received: from xz-x1.redhat.com (toroon474qw-lp140-04-174-95-215-133.dsl.bell.ca. [174.95.215.133]) by smtp.gmail.com with ESMTPSA id j24sm2390695qkg.107.2020.10.07.13.53.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Oct 2020 13:53:46 -0700 (PDT) From: Peter Xu To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: peterx@redhat.com, Paolo Bonzini , Sean Christopherson , Andrew Jones , "Dr . David Alan Gilbert" Subject: [PATCH v14 02/14] KVM: Cache as_id in kvm_memory_slot Date: Wed, 7 Oct 2020 16:53:30 -0400 Message-Id: <20201007205342.295402-3-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201007205342.295402-1-peterx@redhat.com> References: <20201007205342.295402-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cache the address space ID just like the slot ID. It will be used in order to fill in the dirty ring entries. Suggested-by: Paolo Bonzini Suggested-by: Sean Christopherson Reviewed-by: Sean Christopherson Signed-off-by: Peter Xu --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 05e3c2fb3ef7..c6f45687ba89 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -346,6 +346,7 @@ struct kvm_memory_slot { unsigned long userspace_addr; u32 flags; short id; + u16 as_id; }; static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 68edd25dcb11..2e8539213125 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1247,6 +1247,11 @@ static int kvm_delete_memslot(struct kvm *kvm, memset(&new, 0, sizeof(new)); new.id = old->id; + /* + * This is only for debugging purpose; it should never be referenced + * for a removed memslot. + */ + new.as_id = as_id; r = kvm_set_memslot(kvm, mem, old, &new, as_id, KVM_MR_DELETE); if (r) @@ -1313,6 +1318,7 @@ int __kvm_set_memory_region(struct kvm *kvm, if (!mem->memory_size) return kvm_delete_memslot(kvm, mem, &old, as_id); + new.as_id = as_id; new.id = id; new.base_gfn = mem->guest_phys_addr >> PAGE_SHIFT; new.npages = mem->memory_size >> PAGE_SHIFT; -- 2.26.2