Re: /ioremap.c:191 __ioremap_caller... Info: mapping multiple BARs. Your kernel is fine.

[Thomas Gleixner]

On Mon, 2 Nov 2015, Toralf FÃrster wrote:

> Starting with 4.1 and still in 4.3-rc7 I get this in dmesg during
> boot phase at a 64 bit Gentoo Linux at a Lenovo T440s:

> ------------[ cut here ]------------
> WARNING: CPU: 1 PID: 1 at arch/x86/mm/ioremap.c:191 __ioremap_caller+0x233/0x380()
> Info: mapping multiple BARs. Your kernel is fine.
...
>  [<ffffffff8104e633>] __ioremap_caller+0x233/0x380
>  [<ffffffff8102b51d>] ? snb_uncore_imc_init_box+0x6d/0xa0
>  [<ffffffff8104e7a6>] ioremap_nocache+0x26/0x40
>  [<ffffffff8102b51d>] snb_uncore_imc_init_box+0x6d/0xa0
>
> Should I worry about that ?

I don't think so. It's probably some BIOS/ACPI wreckage, but Peter
might have more insight than me.

Thanks,

	tglx