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| author | Jan Beulich <jbeulich@suse.com> | 2012-09-11 12:34:07 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2012-09-11 12:34:07 +0200 |
| commit | 2055a9455436f862d50212b946d9bb9c2161f95b (patch) | |
| tree | 17fa02ce7eb8c270c22918e4b871a5dc2a961280 | |
| parent | 1868a0c5c083a53f7473067ceb871bd096c72386 (diff) | |
| download | xen-2055a9455436f862d50212b946d9bb9c2161f95b.tar.gz xen-2055a9455436f862d50212b946d9bb9c2161f95b.tar.bz2 xen-2055a9455436f862d50212b946d9bb9c2161f95b.zip | |
docs: document "ucode=" hypervisor command line option
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
xen-unstable changeset: 25841:7d770de90b7f
xen-unstable date: Mon Sep 10 10:13:56 UTC 2012
| -rw-r--r-- | docs/misc/xen-command-line.markdown | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index b3f176cbdc..eff930f7f8 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -785,6 +785,19 @@ pages) must also be specified via the tbuf\_size parameter. > `= unstable | skewed` ### ucode +> `= <integer>` + +Specify the CPU microcode update blob module index. When positive, this +specifies the n-th module (in the GrUB entry, zero based) to be used +for updating CPU micrcode. When negative, counting starts at the end of +the modules in the GrUB entry (so with the blob commonly being last, +one could specify `ucode=-1`). Note that the value of zero is not valid +here (entry zero, i.e. the first module, is always the Dom0 kernel +image). Note further that use of this option has an unspecified effect +when used with xen.efi (there the concept of modules doesn't exist, and +the blob gets specified via the `ucode=<filename>` config file/section +entry; see [EFI configuration file description](efi.html)). + ### unrestricted\_guest > `= <boolean>` |