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Date: Thu, 28 Jul 2016 05:26:47 -0400
To: Nicolai Stange <>
Cc: Andy Lutomirski <>,,,,, Borislav Petkov <>,
        Nadav Amit <>, Kees Cook <>,
        Brian Gerst <>,
        Linus Torvalds <>,
        Josh Poimboeuf <>, Jann Horn <>,
        Heiko Carstens <>,
        Ingo Molnar <>
Subject: Re: [PATCH v5 03/32] x86/cpa: In populate_pgd, don't set the pgd entry until it's populated

On Sat, 23 Jul 2016 16:58:16 +0200, Nicolai Stange said:
> writes:

> The reason the patch didn't work for Valdis might be that there is
> another issue in next-20150722 with the same symptoms (provided you
> don't watch the serial console). Valdis, did you apply the provided
> patch on top of next?

Sorry, am on vacation, and no option for a serial console, that's why
I missed the part about there being *two* issues...

> The "other issue" is:
> (...)
>  [<ffffffffb6055487>] load_microcode.isra.1.constprop.12+0x37/0xa0

> I bisected this one to 21ef9a5c3164 ("Merge branch 'x86/microcode'"). Both
> of its parents do not exhibit that behaviour.  This merge's author is
> Ingo Molnar, so I added him to the CC list.

Confirming that I'm up and running on next-20160727 plus Borislav's patch:

Subject: [PATCH -v2 2/2] x86/microcode/intel: Fix initrd loading with  CONFIG_RANDOMIZE_MEMORY

with USERCOPY, Andy Lutomirski's stack/thread cleanup work, and microcode loading
from initramfs all working....

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