From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 76331] kernel BUG at drivers/iommu/intel-iommu.c:844!
Date: Fri, 16 May 2014 20:28:31 +0000
Message-ID: <bug-76331-28872-6fwB26tAwM@https.bugzilla.kernel.org/>
References: <bug-76331-28872@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=76331

--- Comment #2 from Matt <mspeder@users.sourceforge.net> ---
Hi Alex,

# dmesg | grep ecap
[    0.057396] dmar: IOMMU 0: reg_base_addr fbfff000 ver 1:0 cap c9008010e60262
ecap f020fa
[    0.057403] dmar: IOMMU 1: reg_base_addr fbffe000 ver 1:0 cap c9078010ef0462
ecap f020fe
[  158.832381] vfio_ecap_init: 0000:00:1b.0 hiding ecap 0x5@0x130

Host RAM is 36G
Guest RAM was 16G

I just tried with Guest RAM 4G, it didn't make any difference.

Here is the relevant extract of libvirt conf :
  <memory unit='KiB'>4194304</memory>
  <currentMemory unit='KiB'>4194304</currentMemory>
  <memtune>
    <hard_limit unit='KiB'>25165824</hard_limit>
  </memtune>

# qemu-system-x86_64 --version
QEMU emulator version 2.0.0, Copyright (c) 2003-2008 Fabrice Bellard

If you need anything else don't hesitate !

Thanks,

Matt

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