linux-kernel - Re: [PATCH] x86: trim ram need to check if mtrr is there v2

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Date:	Fri, 25 Jan 2008 12:12:19 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: trim ram need to check if mtrr is there v2


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> is_cpu(INTEL) already make sure we have mtrr_if got assigned and 
> cpu_has_mtrr.
> 
> may need to fix qemu instead...

no ...

lets not do non-sensical trimming of RAM, ok? Emit a warning but never 
trim all of RAM and make the system unbootable. Trimmed RAM is something 
that users can pester board/BIOS vendors with. Non-booting kernels is 
something _we_ get pestered with ;-)

	Ingo
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