Re: [PATCH] remove csum_partial_copy_generic_i386 to clean up exception table

Real Name
2014-06-17T13:45:11Z

On Mon, Jun 09, 2014 at 01:45:56PM +0800, Real Name wrote:
> On Thu, Jun 05, 2014 at 11:49:49PM +0200, Richard Weinberger wrote:
> > Am 05.06.2014 06:15, schrieb Honggang Li:
> > > arch/x86/um/checksum_32.S had been copy & paste from x86. When build
> > > x86 uml, csum_partial_copy_generic_i386 mess up the exception table.
> > > In fact, exception table dose not work in uml kernel.
> >
> > Are you sure that exception tables do not work on UML?
> > I said, I'm not sure. Can you please find out?
>
> I think we can't test the exception table with linux-next uml kernel, because
> the exception table is broken.
>

This patch is the root source of the broken exception table of UML
kernel.

linux]# git bisect visualize
commit 706276543b699d80f546e45f8b12574e7b18d952
Author: H. Peter Anvin <hpa@zytor.com>
Date: Fri Apr 20 17:12:48 2012 -0700

x86, extable: Switch to relative exception table entries