From: Ian Munsie <imun...@au1.ibm.com>
If a context is being detached and we get a translation fault for it
there is little point getting it's mm and handling the fault, so just
respond with an address error and return earlier.
Signed-off-by: Ian Munsie <imun...@au1.ibm.com>
---
drivers/misc/cxl/fault.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index c99e896..3e8c06a 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -176,6 +176,12 @@ void cxl_handle_fault(struct work_struct *fault_work)
return;
}
+ /* Early return if the context is being / has been detached */
+ if (ctx->status == CLOSED) {
+ cxl_ack_ae(ctx);
+ return;
+ }
+
pr_devel("CXL BOTTOM HALF handling fault for afu pe: %i. "
"DSISR: %#llx DAR: %#llx\n", ctx->pe, dsisr, dar);
--
2.1.3
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