From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Message-ID: <1445540891.30908.144.camel@infradead.org> Subject: Re: [PATCH] kexec: Add --lite option From: Geoff Levand Date: Thu, 22 Oct 2015 12:08:11 -0700 In-Reply-To: <20151022125012.GB20847@redhat.com> References: <1445469125.30908.105.camel@infradead.org> <20151022031718.GB11227@dhcp-129-115.nay.redhat.com> <20151022125012.GB20847@redhat.com> Mime-Version: 1.0 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: Vivek Goyal , Dave Young Cc: panand@redhat.com, Simon Horman , kexec@lists.infradead.org, Petitboot@lists.ozlabs.org Hi Vivek, On Thu, 2015-10-22 at 08:50 -0400, Vivek Goyal wrote: > On Thu, Oct 22, 2015 at 11:17:18AM +0800, Dave Young wrote: > > On 10/21/15 at 04:12pm, Geoff Levand wrote: > > > Add a new option --lite to kexec that allows for a fast reboot > > > by avoiding the purgatory integrity checks. This option is > > > intended for use by kexec based bootloaders that load a new > > > image and then immediately transfer control to it. > > > > I think Vivek was rejecting this --lite since kdump need the purgatory > > integrity checks. Ccing him. > > Right. Why are we trying to bypass sha256 hash verification of loaded > segments at run time, that needs to be justified. Please see my reply to Dave. > Atleast on x86, this integrity verification was fast and we did not > notice any siginificant delays in purgatory. And in that case extra knob > like this is hard to justify. I notice the difference on the my arm64 system, so I guess we are even on that. In general, faster boot times are desirable. This option allows a faster system boot for kexec based bootloaders that use kexec-tools. -Geoff _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec