[ +to Thomas Hellstrom ]

On 12/25/2014 08:57 PM, Qu Wenruo wrote:
> Hi all,
> 
> When testing v3.19-rc1 kernel(in fact, try to test), the kernel itself fail 
> to boot on VMware ESXi 5.1 guest.

Maybe this problem related to the other VMware PAT issue?

> The boot failure is quite easy to describe, only one line is output:
> "Probing EDD (edd=off to disable)...ok"
> 
> No other output(including warning/bug_on/backtrace or whatever) and the guest 
> just hangs.
> It's OK on v3.18, so it's a regression.
> 
> Bisect points to the following commit:
> commit f5b2831d654167d77da8afbef4d2584897b12d0c
> Author: Juergen Gross <jgr...@suse.com>
> Date:   Mon Nov 3 14:02:02 2014 +0100
> 
>     x86: Respect PAT bit when copying pte values between large and normal 
> pages
> 
>     The PAT bit in the ptes is not moved to the correct position when
>     copying page protection attributes between entries of different sized
>     pages. Translate the ptes according to their page size.
> 
> 
> I have also created the kernel BZ report:
> https://bugzilla.kernel.org/show_bug.cgi?id=90321
> 
> Hopes this can be resolved in next rc.
> 
> Thanks,
> Qu

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