Commit c34a12e6 authored by Eric Farman's avatar Eric Farman Committed by Cornelia Huck
Browse files

s390/cio: Initialize the host addresses in pfn_array 



Let's initialize the host address to something that is invalid,
rather than letting it default to zero.  This just makes it easier
to notice when a pin operation has failed or been skipped.

Signed-off-by: default avatarEric Farman <farman@linux.ibm.com>
Message-Id: <20190514234248.36203-5-farman@linux.ibm.com>
Reviewed-by: default avatarFarhan Ali <alifm@linux.ibm.com>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
parent e4f3f18b

drivers/s390/cio/vfio_ccw_cp.c

+4 −1
Original line number Diff line number Diff line
@@ -91,8 +91,11 @@ static int pfn_array_alloc(struct pfn_array *pa, u64 iova, unsigned int len) 
	pa->pa_pfn = pa->pa_iova_pfn + pa->pa_nr;



	pa->pa_iova_pfn[0] = pa->pa_iova >> PAGE_SHIFT;

	for (i = 1; i < pa->pa_nr; i++)

	pa->pa_pfn[0] = -1ULL;

	for (i = 1; i < pa->pa_nr; i++) {

		pa->pa_iova_pfn[i] = pa->pa_iova_pfn[i - 1] + 1;

		pa->pa_pfn[i] = -1ULL;

	}



	return 0;

}