On Thu, Nov 19, 2009 at 6:40 PM, Martin Michlmayr <tbm@xxxxxxxxxx> wrote: > Some Debian users have reported that the kernel hangs early > during boot on some IP22 systems. Thomas Bogendoerfer found > that this is due to a "bad interaction between CONFIG_EARLY_PRINTK > and overwritten prom memory during early boot". Since there's > no fix yet, disable CONFIG_EARLY_PRINTK for now. Never experienced anything like that, although I'm quite extensively using IP22 with recent kernels. Any details on the hangs? Thanks, Dmitri > > Signed-off-by: Martin Michlmayr <tbm@xxxxxxxxxx> > > diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig > index 1aad0d9..42e1ac1 100644 > --- a/arch/mips/Kconfig > +++ b/arch/mips/Kconfig > @@ -358,7 +358,9 @@ config SGI_IP22 > select SWAP_IO_SPACE > select SYS_HAS_CPU_R4X00 > select SYS_HAS_CPU_R5000 > - select SYS_HAS_EARLY_PRINTK > +# Disable EARLY_PRINTK for now since it leads to overwritten prom memory > +# during early boot on some machines. > +# select SYS_HAS_EARLY_PRINTK > select SYS_SUPPORTS_32BIT_KERNEL > select SYS_SUPPORTS_64BIT_KERNEL > select SYS_SUPPORTS_BIG_ENDIAN > > -- > Martin Michlmayr > http://www.cyrius.com/ > >
