diff options
| author | Daniel P. Berrangé <berrange@redhat.com> | 2020-09-23 14:38:04 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-09-29 03:06:12 -0400 |
| commit | 48a7ff4d516c92323ca7bd88df90ebb974bc0a9a (patch) | |
| tree | 6004b5da986106f77835dba34bceaa9db24c40e7 /qemu-options.hx | |
| parent | 10c3666658f53c5ec8fd9ec27cdf5c393ff814a0 (diff) | |
qemu-options: document SMBIOS type 11 settings
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200923133804.2089190-4-berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 47f64be0c0..3564c2303f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2296,6 +2296,8 @@ DEF("smbios", HAS_ARG, QEMU_OPTION_smbios, "-smbios type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str]\n" " [,asset=str][,part=str][,max-speed=%d][,current-speed=%d]\n" " specify SMBIOS type 4 fields\n" + "-smbios type=11[,value=str][,path=filename]\n" + " specify SMBIOS type 11 fields\n" "-smbios type=17[,loc_pfx=str][,bank=str][,manufacturer=str][,serial=str]\n" " [,asset=str][,part=str][,speed=%d]\n" " specify SMBIOS type 17 fields\n", @@ -2319,6 +2321,45 @@ SRST ``-smbios type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str][,asset=str][,part=str]`` Specify SMBIOS type 4 fields +``-smbios type=11[,value=str][,path=filename]`` + Specify SMBIOS type 11 fields + + This argument can be repeated multiple times, and values are added in the order they are parsed. + Applications intending to use OEM strings data are encouraged to use their application name as + a prefix for the value string. This facilitates passing information for multiple applications + concurrently. + + The ``value=str`` syntax provides the string data inline, while the ``path=filename`` syntax + loads data from a file on disk. Note that the file is not permitted to contain any NUL bytes. + + Both the ``value`` and ``path`` options can be repeated multiple times and will be added to + the SMBIOS table in the order in which they appear. + + Note that on the x86 architecture, the total size of all SMBIOS tables is limited to 65535 + bytes. Thus the OEM strings data is not suitable for passing large amounts of data into the + guest. Instead it should be used as a indicator to inform the guest where to locate the real + data set, for example, by specifying the serial ID of a block device. + + An example passing three strings is + + .. parsed-literal:: + + -smbios type=11,value=cloud-init:ds=nocloud-net;s=http://10.10.0.1:8000/,\\ + value=anaconda:method=http://dl.fedoraproject.org/pub/fedora/linux/releases/25/x86_64/os,\\ + path=/some/file/with/oemstringsdata.txt + + In the guest OS this is visible with the ``dmidecode`` command + + .. parsed-literal:: + + $ dmidecode -t 11 + Handle 0x0E00, DMI type 11, 5 bytes + OEM Strings + String 1: cloud-init:ds=nocloud-net;s=http://10.10.0.1:8000/ + String 2: anaconda:method=http://dl.fedoraproject.org/pub/fedora/linux/releases/25/x86_64/os + String 3: myapp:some extra data + + ``-smbios type=17[,loc_pfx=str][,bank=str][,manufacturer=str][,serial=str][,asset=str][,part=str][,speed=%d]`` Specify SMBIOS type 17 fields ERST |