Re: CONFIG_PAGE_TABLE_ISOLATION=y on x86_64 causes gcc to segfault when building x86_32 binaries

[Lars Wendler]

Am Wed, 3 Jan 2018 19:52:04 +0100 (CET)
schrieb Thomas Gleixner <tglx@xxxxxxxxxxxxx>:

> On Wed, 3 Jan 2018, Thomas Gleixner wrote:
> 
> > On Wed, 3 Jan 2018, Lars Wendler wrote:  
> > > Am Wed, 3 Jan 2018 13:05:38 +0100 (CET)
> > > schrieb Thomas Gleixner <tglx@xxxxxxxxxxxxx>:  
> > > > Also can you please try Linus v4.15-rc6 with PTI enabled so we
> > > > can see whether that's a backport issue or a general one?  
> > > 
> > > Same problem with 4.15-rc6. So I suppose that means it's a general
> > > issue.  
> > 
> > Just a shot in the dark as I just decoded another issue on a AMD
> > CPU. Can you please try the patch below?  
> 
> Ok. Found the real issue. This is a problem on AMD boxen.
> 
> Fix below.
> 
> Can Xen folks please have a look at that as well?
> 
> Thanks,
> 
> 	tglx

That indeed fixes the issue. Thank you!

Kind regards
Lars

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