On 16/07/13 11:15, Jan Beulich wrote:

The requested vector count is to be passed in struct xen_pci_op's info
field. Upon failure, if a smaller vector count might work, the backend
will pass that smaller count in the value field (which so far is always
being set to zero in the error path).

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/include/public/io/pciif.h
+++ b/xen/include/public/io/pciif.h
@@ -46,6 +46,7 @@
 #define XEN_PCI_OP_aer_resume		(7)
 #define XEN_PCI_OP_aer_mmio		(8)
 #define XEN_PCI_OP_aer_slotreset	(9)
+#define XEN_PCI_OP_enable_multi_msi	(10)

/* Be sure to bump this number if you change this file */
#define XEN_PCI_MAGIC "7"

Should you bump this version, or is the comment stale? The only in-tree consumer I can find is MiniOS's pcifront, which writes it into xenstore.

~Andrew

 
 /* xen_pci_op error numbers */
 #define XEN_PCI_ERR_success          (0)

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