Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v4] ARM: configs: Add Freescale LS1021A defconfig | Date | Fri, 30 Oct 2015 14:46:43 +0100 |
| |
On Tuesday 27 October 2015 14:40:21 Huan Wang wrote: > > > > Ok. What I was suggesting above though was to try to pinpoint exactly > > where it goes wrong. You have verified that it does not crash before the > > page tables are enabled, but that is very early. You have also shown > > that the kernel crashes before the point at which the 'Booting Linux on > > physical CPU 0xf00' message is printed to the kernel, but that is *much* > > later: setup_arch() calls parse_early_param(), which in turn sets up > > early_console_write(). This means the 'Booting Linux on physical CPU > > 0xf00' > > is still stuck in the log buffer and you may have crashed someone > > inbetween. > > > > If you can call printascii(), you can try to do that just after enabling > > the page tables to see if that was the problem like you suspect, or > > otherwise add more printascii() statements between __turn_mmu_on and > > parse_early_param() to pinpoint the exact code that breaks. > [Alison Wang] Thank you very much for your help. The issue is fixed. >
Ah, very good. I'm curious what caused the problem in the end.
Arnd
| |