drivers/vfio: Support EEH error injection
The patch adds one more EEH sub-command (VFIO_EEH_PE_INJECT_ERR)
to inject the specified EEH error, which is represented by
(struct vfio_eeh_pe_err), to the indicated PE for testing purpose.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/Documentation/vfio.txt b/Documentation/vfio.txt
index 96978ec..4c746a7 100644
--- a/Documentation/vfio.txt
+++ b/Documentation/vfio.txt
@@ -385,6 +385,18 @@
....
+ /* Inject EEH error, which is expected to be caused by 32-bits
+ * config load.
+ */
+ pe_op.op = VFIO_EEH_PE_INJECT_ERR;
+ pe_op.err.type = EEH_ERR_TYPE_32;
+ pe_op.err.func = EEH_ERR_FUNC_LD_CFG_ADDR;
+ pe_op.err.addr = 0ul;
+ pe_op.err.mask = 0ul;
+ ioctl(container, VFIO_EEH_PE_OP, &pe_op);
+
+ ....
+
/* When 0xFF's returned from reading PCI config space or IO BARs
* of the PCI device. Check the PE's state to see if that has been
* frozen.
