drivers/vfio: Support EEH error injection

[firefly-linux-kernel-4.4.55.git] / Documentation / vfio.txt

diff --git a/Documentation/vfio.txt b/Documentation/vfio.txt
index 96978eced34154187acdd328fe403a14ca6200f7..4c746a7e717a9a3c77c7092a0e9fb5c0bc312263 100644 (file)
--- a/Documentation/vfio.txt
+++ b/Documentation/vfio.txt
@@ -385,6 +385,18 @@ The code flow from the example above should be slightly changed:
 
        ....
 
+       /* 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.