From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.skyhub.de ([2a01:4f8:190:11c2::b:1457]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hb4tb-0007Th-Ex for kexec@lists.infradead.org; Wed, 12 Jun 2019 15:10:41 +0000 Date: Wed, 12 Jun 2019 17:10:33 +0200 From: Borislav Petkov 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-Disposition: inline In-Reply-To: <20190612015549.GI26148@MiWiFi-R3L-srv> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Baoquan He , Thomas.Lendacky@amd.com Cc: x86@kernel.org, lijiang , peterz@infradead.org, dave.hansen@linux.intel.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, mingo@redhat.com, luto@kernel.org, hpa@zytor.com, tglx@linutronix.de, dyoung@redhat.com, akpm@linux-foundation.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. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec