From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Tue, 16 Jun 2015 20:58:28 +0100 Subject: Running kexec on mx6 In-Reply-To: References: <20150616094242.GR7557@n2100.arm.linux.org.uk> <20150616161317.GS7557@n2100.arm.linux.org.uk> Message-ID: <20150616195828.GT7557@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jun 16, 2015 at 03:01:49PM -0300, Fabio Estevam wrote: > On Tue, Jun 16, 2015 at 1:13 PM, Russell King - ARM Linux > wrote: > > > Well, the good news is I can reproduce it here... the bad news is that > > my attempt to debug it so far is causing extra problems - because the > > imx6 uart is having its clocks disabled, which kind'a makes it hard to > > get debug out... that's wasted half an hour working that out, and > > further debug is now going to have to wait until later this evening > > or tomorrow. > > Thanks, Russell. > > I am having different results from the initial post now. > > I noticed that 4.1-rc works fine, but 4.0 does not. > > If I apply commit fee3fd4fd2ad136b ("ARM: 8338/1: kexec: Relax SMP > validation to improve DT compatibility") against 4.0 then kexec works > fine here. If you don't have that commit, kexec should fail gracefully if it thinks it can't cope with the existing system config - it shouldn't get to the point where it takes the existing kernel down. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.