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[Bug 1826200] Re: RFE: populate "OEM Strings" (type 11) SMBIOS table str
From: |
Daniel Berrange |
Subject: |
[Bug 1826200] Re: RFE: populate "OEM Strings" (type 11) SMBIOS table strings from regular files |
Date: |
Tue, 08 Sep 2020 17:20:50 -0000 |
Surprise...
https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg03023.html
Discovering the firmware limits was tedious. SeaBIOS limits SMBIOS to
64KB total size due to support for SMBIOS 2.1 spec only, while EDK2
fails a little over 128 KB total size despite supporting SMBIOS 3.0
which should not be limited IIUC
** Changed in: qemu
Status: Invalid => In Progress
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https://bugs.launchpad.net/bugs/1826200
Title:
RFE: populate "OEM Strings" (type 11) SMBIOS table strings from
regular files
Status in QEMU:
In Progress
Bug description:
The feature added in
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=2d6dcbf93fb01b4a7f45a93d276d4d74b16392dd
and exposed by libvirt as
https://libvirt.org/formatdomain.html#elementsSysinfo
allows the user to specify up to 255 strings in the unofmatted area of
the Type 11 SMBIOS table, where each string may be of arbitrary
length. This feature is useful for exposing arbitrary text to
arbitrary guest components (in particular when strings are prefixed
with "application identifiers").
Right now, strings can only be specified on the QEMU command line,
which limits the amount of data that can be passed. Please enable
users to pass data from regular files too.
For example:
$QEMU -smbios
type=11,value=Hello,txtfile=file1.txt,txtfile=file2.txt
where "file1.txt" and "file2.txt" could be text files containing ASCII
application prefixes, followed by base64-encoded binary data.
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