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Paul Durrant
bdc0799fe2
This patch largely re-writes the code to parse a PCI_SPEC_STRING and enters
it via the newly introduced function. The new parser also deals with 'bdf'
and 'vslot' as non-positional paramaters, as per the documentation in
xl-pci-configuration(5).
The existing xlu_pci_parse_bdf() function remains, but now strictly parses
BDF values. Some existing callers of xlu_pci_parse_bdf() are
modified to call xlu_pci_parse_spec_string() as per the documentation in xl(1).
NOTE: Usage text in xl_cmdtable.c and error messages are also modified
appropriately.
As a side-effect this patch also fixes a bug where using '*' to specify
all functions would lead to an assertion failure at the end of
xlu_pci_parse_bdf().
Fixes: d25cc3ec93 ("libxl: workaround gcc 10.2 maybe-uninitialized warning")
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Acked-by: Wei Liu <wl@xen.org>