From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from g4t3427.houston.hp.com ([15.201.208.55]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WbEun-0003jA-Fe for kexec@lists.infradead.org; Fri, 18 Apr 2014 19:57:37 +0000 Date: Fri, 18 Apr 2014 13:57:06 -0600 From: Linn Crosetto Subject: Re: [PATCH v6 0/9] kexec-tools, x86: E820 memmap pass for kdump Message-ID: <20140418195706.GA32105@oranje.fc.hp.com> References: <1397487341-17287-1-git-send-email-chaowang@redhat.com> <20140417062420.GB1849@dhcp-17-89.nay.redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20140417062420.GB1849@dhcp-17-89.nay.redhat.com> 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: WANG Chao Cc: kexec@lists.infradead.org, horms@verge.net.au, ebiederm@xmission.com, hpa@zytor.com, dyoung@redhat.com, trenn@suse.de, vgoyal@redhat.com On Thu, Apr 17, 2014 at 02:24:20PM +0800, WANG Chao wrote: > On 04/14/14 at 10:55pm, WANG Chao wrote: > > Hi, All > > > > This patchset enables passing memory map via E820 map on x86 platform instead > > of memmap=exactmap. It's a better design and will solve the following problem > > so far: > > > > - kernel cmdline is limited resource and large machines tend to have many > > memory ranges that may excceed kernel cmdline limit size. > > - kASLR doesn't work with memmap=exactmap, because kASLR happens early than > > user defined memmap=exactmap takes effect. > > > > Unfortunately, saved_max_pfn still got its user out there (calgry pci, it looks > > like the only one). So for backward compatibility, I'm introducing a new option > > --pass-memmap-cmdline to force kexec-tools to pass memmap=exactmap, the old way. > > > > This patchset contains massive updates from the previous one. I take some > > suggestions from reviewers. I try to split the changes into smaller pieces and > > keep the whole change as minimal as I can so it wouldn't be too harsh to review > > the patch. > > > > Any comment is appreciate! > > Hi, Linn > > Thanks for testing the patch in the past. Do you have chance to test > this update? > > This updated patchset changed too much and I want things to work as it's > used to be on your prototype machine with large number of memory ranges. > > Thanks in advance! > WANG Chao Tested the series on a system with 200+ entries in the map; both kexec and kdump (with and without --pass-memmap-cmdline). Thanks for the patches. Tested-by: Linn Crosetto _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec