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| author |   Eric Farman <farman@linux.ibm.com> | 2019-05-15 01:42:45 +0200 |
|---|---|---|
| committer |   Cornelia Huck <cohuck@redhat.com> | 2019-06-03 12:02:55 +0200 |
| commit | c34a12e6a3df3aae8cb6f47baf0d14ef0fbecf7f (patch) | |
| tree | 1424092e049f011634f907165cecd68c8ab4c07e /drivers/s390/cio | |
| parent | s390/cio: Split pfn_array_alloc_pin into pieces (diff) | |
| download | linux-dev-c34a12e6a3df3aae8cb6f47baf0d14ef0fbecf7f.tar.xz linux-dev-c34a12e6a3df3aae8cb6f47baf0d14ef0fbecf7f.zip | |
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: Eric Farman <farman@linux.ibm.com>
Message-Id: <20190514234248.36203-5-farman@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/vfio_ccw_cp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c index e33265fb80b0..086faf2dacd3 100644 --- a/drivers/s390/cio/vfio_ccw_cp.c +++ b/drivers/s390/cio/vfio_ccw_cp.c @@ -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; } |