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=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 27FCFC55178 for ; Fri, 23 Oct 2020 19:24:37 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 70EC720E65 for ; Fri, 23 Oct 2020 19:24:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="P6918UvV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 70EC720E65 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55484 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kW2fz-0008Eu-An for qemu-devel@archiver.kernel.org; Fri, 23 Oct 2020 15:24:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59404) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kW2fP-0007n0-6d for qemu-devel@nongnu.org; Fri, 23 Oct 2020 15:23:59 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:53390) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kW2fN-0007C6-Ci for qemu-devel@nongnu.org; Fri, 23 Oct 2020 15:23:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603481036; 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; 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auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/23 01:44:00 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peng Liang , mst@redhat.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, zhang.zhanghailiang@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, 23 Oct 2020 19:54:41 +0100 "Dr. David Alan Gilbert" wrote: > * Igor Mammedov (imammedo@redhat.com) wrote: > > On Mon, 19 Oct 2020 17:31:56 +0800 > > Peng Liang wrote: > > > > > There is a field with vmstate_ghes_state as vmsd in vmstate_ghes_state, > > > which will lead to infinite recursion in dump_vmstate_vmsd. > > > > > > Fixes: a08a64627b ("ACPI: Record the Generic Error Status Block address") > > > Reported-by: Euler Robot > > > Signed-off-by: Peng Liang > > > --- > > > hw/acpi/generic_event_device.c | 3 +-- > > > 1 file changed, 1 insertion(+), 2 deletions(-) > > > > > > diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c > > > index 6df400e1ee16..4b6867300a55 100644 > > > --- a/hw/acpi/generic_event_device.c > > > +++ b/hw/acpi/generic_event_device.c > > > @@ -334,8 +334,7 @@ static const VMStateDescription vmstate_ghes_state = { > > > .minimum_version_id = 1, > > > .needed = ghes_needed, > > > .fields = (VMStateField[]) { > > > - VMSTATE_STRUCT(ghes_state, AcpiGedState, 1, > > > - vmstate_ghes_state, AcpiGhesState), > > > + VMSTATE_UINT64(ghes_state.ghes_addr_le, AcpiGedState), > > > > not sure its' ok handle it this way, > > > > see how it is done with another structure: > > > > static const VMStateDescription vmstate_ged_state = { > > .name = "acpi-ged-state", > > .version_id = 1, > > .minimum_version_id = 1, > > .fields = (VMStateField[]) { > > VMSTATE_UINT32(sel, GEDState), > > VMSTATE_END_OF_LIST() > > } > > }; > > > > ... > > > > VMSTATE_STRUCT(ged_state, AcpiGedState, 1, vmstate_ged_state, GEDState), > > > > i.e. it looks like we are missing structure definition for AcpiGhesState > > > > CCing David, > > to help with migration magic in case I'm wrong or missed something > > Yeh that's confusing :-) > > Given a: > > VMSTATE_STRUCT(a, B, 1, vmstate_c, C) > > We're saying there's a field 'a' in type B, and field 'a' > should be of type C and be serialised using vmstate_c. > > That also means that in any vmstate_c, we're expecting it > to be passed a type C generally. > > Having said that; you don't need a struct - you can get away > with that VMSTATE_UINT64, there's two problems: > > a) That assumes that your ghes always stays that simple. > b) If you wanted to store a Ghes from a number of different > parent structures then you're stuck because your vmstate_ghes_state > is bound to being a strict field of AcpiGedState. > > So yes, it's neatest to do it using a VMSD for AcpiGhesState > > And congratulations on finding a loop; I don't think we've ever had one > before :-) can we make compilation fail in case VMSTATE_STRUCT is used but is not actually provided like it was in this case? > > Dave > > > > VMSTATE_END_OF_LIST() > > > } > > > }; > >