Virtualization - Apr 2007 - 2.6.19-rc5-mm2: warnings in MODPOST and later

On Tue, 14 Nov 2006 23:56:22 +0100
Adrian Bunk <bunk@stusta.de> wrote:
> Since people were recently complaining about too many warnings:
> Here is a list of the warnings I'm getting in MODPOST and later.
> 
> Since the warnings by far exceed the 100kB limit of linux-kernel (sic), 
> I had to attach them compressed.
> 
> With the exception of the "drivers/ide/pci/atiixp:FFFF05", none
of these
> warnings is present in Linus' tree.
yes, lots of new section mismatch warnings.

A large number of them are due to the paravirt patches:

WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458470) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458478) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458480) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458488) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458490) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458498) and '__stop_parainstructions'
WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc04584a0) and '__stop_parainstructions'
WARNING: Can't handle masks in drivers/ata/ahci:FFFF05
WARNING: drivers/ata/pata_legacy.o - Section mismatch: reference to .init.text:
from .parainstructions after '' (at offset 0x18)
WARNING: drivers/ata/pata_legacy.o - Section mismatch: reference to .init.text:
from .parainstructions after '' (at offset 0x20)
WARNING: drivers/ata/pata_legacy.o - Section mismatch: reference to .init.text:
from .parainstructions after '' (at offset 0x28)
WARNING: drivers/ata/pata_qdi.o - Section mismatch: reference to .init.text:
from .parainstructions after '' (at offset 0x0)
WARNING: drivers/ata/pata_qdi.o - Section mismatch: reference to .init.text:
from .parainstructions after '' (at offset 0x8)

but there are others too.

On Tue, 2006-11-14 at 15:09 -0800, Andrew Morton wrote:
> On Tue, 14 Nov 2006 23:56:22 +0100
> Adrian Bunk <bunk@stusta.de> wrote:
> 
> > Since people were recently complaining about too many warnings:
> > Here is a list of the warnings I'm getting in MODPOST and later.
> > 
> > Since the warnings by far exceed the 100kB limit of linux-kernel
(sic),
> > I had to attach them compressed.
> > 
> > With the exception of the "drivers/ide/pci/atiixp:FFFF05",
none of these
> > warnings is present in Linus' tree.
> 
> yes, lots of new section mismatch warnings.
> 
> A large number of them are due to the paravirt patches:
> 
> WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458470) and '__stop_parainstructions'
> WARNING: vmlinux - Section mismatch: reference to .init.text: from
.parainstructions between '__start_parainstructions' (at offset
0xc0458478) and '__stop_parainstructions'

ok this means that you shouldn't probably switch paravirtualizations
after boot, but that's ok ;) it's not like hypervisor support should be
a module anyway