linux-kernel - Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start

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Message-ID: <87lh0piyhg.fsf@gmail.com>
Date:	Mon, 25 Jul 2016 16:27:55 +0200
From:	Nicolai Stange <nicstange@...il.com>
To:	Nicolai Stange <nicstange@...il.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch/x86/kernel/cpu/microcode/intel: don't store initrd's start

Nicolai Stange <nicstange@...il.com> writes:
> Borislav Petkov <bp@...en8.de> writes:
>> Well, it shouldn't because in the builtin case start should simply
>> contain the ASLR offset the physmem mapping was moved to and this offset
>> is exactly where the builtin images should be... Let me poke at it to
>> see whether I'm seeing things correctly.
>
> Hmm. From what I've seen, I've concluded that the builtin images'
> addresses are __va ones (assuming x86_64). I might be wrong though.

Clarification: "__va ones" that don't point into the physmem mapping but
somewhere else.