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Re: [PATCH] x86: trim ram need to check if mtrr is there v3

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From: Jeremy Fitzhardinge <jeremy@...>
To: Yinghai Lu <yhlu.kernel@...>
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 - 3:39 pm

Yinghai Lu wrote:

Yes.

WARNING: strange, CPU MTRRs all blank?
------------[ cut here ]------------
WARNING: at /home/jeremy/hg/xen/paravirt/linux/arch/x86/kernel/cpu/mtrr/main.c:710 mtrr_trim_uncached_memory+0xf8/0x17b()
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.24 #1938
 [<c012804c>] warn_on_slowpath+0x41/0x51
 [<c01285d4>] ? __call_console_drivers+0x4e/0x5a
 [<c03c3e85>] ? _spin_unlock_irqrestore+0xf/0x2f
 [<c03c3e91>] ? _spin_unlock_irqrestore+0x1b/0x2f
 [<c012880c>] ? release_console_sem+0x1a0/0x1a8
 [<c0128c1f>] ? vprintk+0x294/0x2ee
 [<c0128c2b>] ? vprintk+0x2a0/0x2ee
 [<c04e811b>] ? __alloc_bootmem_core+0x100/0x27a
 [<c0128c8e>] ? printk+0x15/0x17
 [<c0128c8e>] ? printk+0x15/0x17
 [<c04de51e>] mtrr_trim_uncached_memory+0xf8/0x17b
 [<c04de7ae>] ? mtrr_bp_init+0x20d/0x215
 [<c04dc79b>] setup_arch+0x283/0x3c2
 [<c0128c8e>] ? printk+0x15/0x17
 [<c04d6689>] start_kernel+0x60/0x311
 =======================

	J


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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)