From: Gordan Bobic <gordan@bobich.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] QEMU etc/e820 and fw_cfg
Date: Tue, 03 Mar 2015 10:32:06 +0000 [thread overview]
Message-ID: <97fd6e025b9dfa941ea0d7677b52f66c@mail.shatteredsilicon.net> (raw)
I need to pass a custom e820 map to a virtual machine for
troubleshooting purposes and working around IOMMU hardware
bugs.
I have found references to a custom map being providable
via an external file, mentioned as "etc/e820" and "fw_cfg".
Unfortunately, I have not found any documentation that
explains how to use this from userspace when invoking
qemu. Can anybody point me in the right direction?
What is the exact format of this e820 map file and how
do I tell qemu to use it (and where to find it) when
initializing the guest environment?
Many thanks.
Gordan
next reply other threads:[~2015-03-03 11:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-03 10:32 Gordan Bobic [this message]
2015-03-04 13:20 ` [Qemu-devel] QEMU etc/e820 and fw_cfg Gerd Hoffmann
2015-03-04 19:12 ` Gordan Bobic
2015-03-05 8:08 ` Gerd Hoffmann
2015-03-05 10:18 ` Gordan Bobic
2015-03-05 10:42 ` Gerd Hoffmann
2015-03-05 11:01 ` Gordan Bobic
2015-03-05 11:17 ` Gerd Hoffmann
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