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Re: [PATCH] x86: trim ram need to check if mtrr is there v3
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From:
Yinghai Lu <Yinghai.Lu@...>
To: Jeremy Fitzhardinge <jeremy@...>
Cc: Ingo Molnar <mingo@...>, H. Peter Anvin <hpa@...>, Linux Kernel Mailing List <linux-kernel@...>
Subject:
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
Date: Friday, January 25, 2008 - 3:19 pm
On Friday 25 January 2008 10:55:31 am Jeremy Fitzhardinge wrote:
quoted text
> Ingo Molnar wrote: > > * Yinghai Lu <Yinghai.Lu@Sun.COM> wrote: > > > > > >> [PATCH] x86: trim ram need to check if mtrr is there v3 > >> > > > > > >>> H. Peter Anvin wrote: > >>> Looks like the code doesn't check that the CPU *has* MTRRs... > >>> > >> so more strict check if mtrr is there really. > >> bail out if mtrr all blank when qemu cpu model is used > >> > >> and check if is AMD as early > >> also remove 4G less check, according to hpa. > >> > > > > thanks, applied. Shouldnt we put in an exception for when there is MTRR > > support, but they dont cover anything. Still emit a warning - but > > booting up real slow is still better than losing all of RAM and crashing > > > > The problem is re-occuring for me with current x86.git. Looks like v2 > did the trick, and v3 is broken...
so the ram size less 4g is way out for your case. again, can you post /proc/mtrrs with v2 patch? Thanks YH --
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Messages in current thread:
x86.git: mtrr trimming removes all memory under kvm
, Jeremy Fitzhardinge
, (Thu Jan 24, 9:44 pm)
Re: x86.git: mtrr trimming removes all memory under kvm
, H. Peter Anvin
, (Thu Jan 24, 9:49 pm)
[PATCH] x86: trim ram need to check if mtrr is there v2
, Yinghai Lu
, (Thu Jan 24, 11:47 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, Jeremy Fitzhardinge
, (Fri Jan 25, 3:43 am)
[PATCH] x86: trim ram need to check if mtrr is there v3
, Yinghai Lu
, (Fri Jan 25, 4:42 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 10:21 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Andi Kleen
, (Fri Jan 25, 10:57 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 11:10 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, H. Peter Anvin
, (Fri Jan 25, 11:57 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 7:09 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 2:59 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 3:02 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 2:55 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Yinghai Lu
, (Fri Jan 25, 3:19 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 3:04 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 2:59 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 3:01 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 3:04 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 3:27 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Yinghai Lu
, (Fri Jan 25, 3:32 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Jeremy Fitzhardinge
, (Fri Jan 25, 3:39 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v3
, Ingo Molnar
, (Fri Jan 25, 3:30 pm)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, Yinghai Lu
, (Fri Jan 25, 4:13 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, Ingo Molnar
, (Fri Jan 25, 7:12 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, H. Peter Anvin
, (Fri Jan 25, 11:47 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, Yinghai Lu
, (Fri Jan 25, 4:39 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, H. Peter Anvin
, (Fri Jan 25, 1:44 am)
Re: [PATCH] x86: trim ram need to check if mtrr is there v2
, Yinghai Lu
, (Fri Jan 25, 3:50 am)
Re: x86.git: mtrr trimming removes all memory under kvm
, Yinghai Lu
, (Thu Jan 24, 10:32 pm)
Re: x86.git: mtrr trimming removes all memory under kvm
, Andi Kleen
, (Fri Jan 25, 6:52 am)
Re: x86.git: mtrr trimming removes all memory under kvm
, Yinghai Lu
, (Thu Jan 24, 10:21 pm)
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