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[Libreboot] immo=soft?
From: |
Marcus Moeller |
Subject: |
[Libreboot] immo=soft? |
Date: |
Thu, 29 Jan 2015 22:07:10 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.4.0 |
Hi all,
on x200 I see the following error in kernel log:
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at drivers/iommu/dmar.c:778
warn_invalid_dmar+0x6e/0x86()
[ 0.000000] Your BIOS is broken; DMAR reported at address fed92000
returns all ones!
BIOS vendor: coreboot; Ver: CBET4000 4.0; Product Version: ThinkPad X200
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.4-gnu-1 #1
[ 0.000000] Hardware name: LENOVO T4537Z1/T4537Z1, BIOS CBET4000 4.0
01/26/2015
[ 0.000000] 0000000000000000 47e0174558e765c2 ffffffff81803db8
ffffffff8154c2e4
[ 0.000000] 0000000000000000 ffffffff81803e10 ffffffff81803df8
ffffffff8106fc11
[ 0.000000] ffffffff81803dd8 00000000fed92000 ffffffff81741350
ffffffff81b3100c
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff8154c2e4>] dump_stack+0x4e/0x71
[ 0.000000] [<ffffffff8106fc11>] warn_slowpath_common+0x81/0xa0
[ 0.000000] [<ffffffff8106fcee>] warn_slowpath_fmt_taint+0x4e/0x70
[ 0.000000] [<ffffffff81929e8b>] ?
__early_ioremap.constprop.0+0x14b/0x1d3
[ 0.000000] [<ffffffff8154d02a>] warn_invalid_dmar+0x6e/0x86
[ 0.000000] [<ffffffff81942f73>] detect_intel_iommu+0xef/0x17a
[ 0.000000] [<ffffffff81904f20>] pci_iommu_alloc+0x4b/0x6e
[ 0.000000] [<ffffffff81915298>] mem_init+0x17/0x9d
[ 0.000000] [<ffffffff818f9de4>] start_kernel+0x257/0x4ad
[ 0.000000] [<ffffffff818f9120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff818f94d7>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff818f9626>] x86_64_start_kernel+0x14d/0x170
[ 0.000000] ---[ end trace 97227be102df4dc3 ]---
[ 0.000000] Memory: 4006488K/4155692K available (5466K kernel code,
907K rwdata, 1716K rodata, 1156K init, 1176K bss, 149204K reserved)
Have you experienced the same and tried to get around it (by e.g.
setting immo=soft)?
Greets
Marcus
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