iucode_tool(8): document changes to ucode filtering

Document in the manpage the changes to the -s parameter to support
selecting microcode updates based on their revisions.
parent 71e494a2
......@@ -179,11 +179,20 @@ microcode data file. This is the default mode of operation.
.TP
.BI "\-s ! | [!]" signature "[," pf_mask "]"
Select microcodes by the specified \fIsignature\fP and \fIprocessor flags
mask\fP (\fIpf_mask\fP). If the \fIprocessor flags mask\fP is specified, it will
select only microcodes that are suitable for at least one of the processor flag
combinations present in the mask.
.BI "\-s ! | [!]" signature "[,[" pf_mask "][,[" lt: "|" eq: "|" gt: "]" revision "]]"
Select microcodes by the specified \fIsignature\fP, \fIprocessor flags mask\fP
(\fIpf_mask\fP), and \fIrevision\fP.
If the \fIprocessor flags mask\fP is specified, it will select only microcodes
that are suitable for at least one of the processor flag combinations present
in the mask.
If the \fIrevision\fP is specified, optionally prefixed by one of the
\(lq\fIeq:\fP\(rq, \(lq\fIlt:\fP\(rq or \(lq\fIgt:\fP\(rq operators, it will
select only microcodes that have that same \fIrevision\fP (if no operator, or
if the \(lq\fIeq:\fP\(rq operator is used), or microcodes that have a
\fIrevision\fP that is less than (\(lq\fIlt:\fP\(rq operator), or greater than
(\(lq\fIgt:\fP\(rq operator), the one specified.
Specify more than once to select more microcodes. This option can be combined
with the \fI\-\-scan\-system\fP option to select more microcodes. If
......
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