[REGRESSION][x86] Commit f5b2831d65 cause boot failure in VMware ESXi 5.1 guest
From: Qu Wenruo
Date: Thu Dec 25 2014 - 20:57:43 EST
When testing v3.19-rc1 kernel(in fact, try to test), the kernel itself
fail to boot on VMware ESXi 5.1 guest.
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:
Author: Juergen Gross <jgross@xxxxxxxx>
Date: Mon Nov 3 14:02:02 2014 +0100
x86: Respect PAT bit when copying pte values between large and
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:
Hopes this can be resolved in next rc.
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