Commit 13da7046 authored Dec 08, 2014 by Ian Munsie Committed by Michael Ellerman Dec 29, 2014

cxl: Early return from cxl_handle_fault for a shut down context



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 <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 456295e2

drivers/misc/cxl/fault.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -180,6 +180,12 @@ 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);