Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp5940740ybi; Wed, 12 Jun 2019 11:04:57 -0700 (PDT) X-Google-Smtp-Source: APXvYqwy9KwNJVQisOSFH29FZIzmdY6XVVLTVOOX3aYmBMWESHQfm0UzgaT+mFTYkGWSA37ts47+ X-Received: by 2002:a63:e50c:: with SMTP id r12mr26209347pgh.284.1560362697617; Wed, 12 Jun 2019 11:04:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560362697; cv=none; d=google.com; s=arc-20160816; b=RXBjG7EEGi/6lp8fu+08Iv9cq4KC7p3CfMFOu8Z5kaKNBV0FZJIiiTtsg5N0tsH0l4 DpdvjvnKoP21fBY+HOBX9C/dPpf9ekM7wMKqOjYYySO/vlvfsLD4tQfkRZAR9qdLPbRA vEmaR4V2v8bVvyW76xsLB0Tyz2EnUDZC6BfzBJh8GuYbT/LY+nnYq4CMaJ65sRN4Acx+ EOZ383CV+a6QMODOPsu23AABHlGKGrp8Gc+OrSU4qa2tmijB+SOjYzQXa9zrlnBOu+04 5/SyXBsBxvyibbkhDUY0gj50eCSgvZfmhWXvnOR3qCyo6WKw4JjcDk81WVYry9NrEzHu aFxg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=5vgvKr0yj2ZHJzu6XBf8xEGzNqLaksW1SO4lqxw8S90=; b=LqgUqoU4J/F6DIOR/sMYXfQSyuqHWNckU746MOVdoZb3E3kxk2/kFWlsqUP0tqIRl7 Eey8s1sUJbHUSlkD8iv/5GsA2yI9jFMLgufJ4HMdJHPtEe2UnbK74Tgw3Ya4yQFXFfz2 tOvS6/C48o2D2LwMbgL5m6mEEb9R4GeSRl6KWJzK74BHk6cgPrhnHXWYRDUtzYGCO2px Uh8SRweh1Lsts2ps3DfYdJ2yOtrLLRMcQpG8yNng8trNGrZoHYRHhF7HmyzX9WD/nzZk Bgxm2Ln69BRHx07KtwcqlSZziDnD5cLR4I70f2LpXajW/U9T2UwhSrgvl7gqqe+X6gnh T+zg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=iqYB5gjC; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n2si140355pgi.45.2019.06.12.11.04.42; Wed, 12 Jun 2019 11:04:57 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=iqYB5gjC; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2440048AbfFLPKi (ORCPT + 99 others); Wed, 12 Jun 2019 11:10:38 -0400 Received: from mail.skyhub.de ([5.9.137.197]:36650 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439907AbfFLPKh (ORCPT ); Wed, 12 Jun 2019 11:10:37 -0400 Received: from zn.tnic (p200300EC2F0A6800329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2f0a:6800:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id CB9571EC09C0; Wed, 12 Jun 2019 17:10:35 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1560352236; 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:in-reply-to:in-reply-to: references:references; bh=5vgvKr0yj2ZHJzu6XBf8xEGzNqLaksW1SO4lqxw8S90=; b=iqYB5gjCfIS76EjmsEZ5Xhcz+/5fiigAoWXQCxKVusgsWllMn5vLNiGawGIkbooisTb6pF MTzgDzI161m3+ZJQYoQPwT2dV49WLwn+bJOjdUAWE25SNRQidoh7fOk2I55YNtU/6f4AaF doq9ON8uMNi0TmtzvtNfeIdnVzT2nts= Date: Wed, 12 Jun 2019 17:10:33 +0200 From: Borislav Petkov To: Baoquan He , Thomas.Lendacky@amd.com Cc: lijiang , linux-kernel@vger.kernel.org, kexec@lists.infradead.org, tglx@linutronix.de, mingo@redhat.com, akpm@linux-foundation.org, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, x86@kernel.org, hpa@zytor.com, dyoung@redhat.com Subject: Re: [PATCH 0/3 v11] add reserved e820 ranges to the kdump kernel e820 table Message-ID: <20190612151033.GJ32652@zn.tnic> References: <20190423013007.17838-1-lijiang@redhat.com> <12847a03-3226-0b29-97b5-04d404410147@redhat.com> <20190607174211.GN20269@zn.tnic> <20190608035451.GB26148@MiWiFi-R3L-srv> <20190608091030.GB32464@zn.tnic> <20190608100139.GC26148@MiWiFi-R3L-srv> <20190608100623.GA9138@zn.tnic> <20190608102659.GA9130@MiWiFi-R3L-srv> <20190610113747.GD5488@zn.tnic> <20190612015549.GI26148@MiWiFi-R3L-srv> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190612015549.GI26148@MiWiFi-R3L-srv> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 12, 2019 at 09:55:49AM +0800, Baoquan He wrote: > With further investigation, the failure after applying Tom's patch is > caused by OOM. When increase crashkernel reservation to 512M, kdump > kernel can boot successfully. I noticed your crashkernel reservation is > 256M, that will fail and stuck there very possibly. > > So Tom's patch can fix the issue. We need further check why much more > crashkernel memory is needed on those AMD boxes with sme support.. Yes, 256M for a kexec kernel sounds pretty much enough to me. So there's something else at play here. I wonder if that workarea after _end, from Tom's patch, needs so much room... -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.