diff options
| author | Peter Xu <peterx@redhat.com> | 2017-02-07 16:28:11 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-17 21:52:31 +0200 |
| commit | 7e58326ad7e79b8c5dbcc6f24e9dc1523d84c11b (patch) | |
| tree | 146f1c9b310813894b79976e28a092b5cbf2ed12 | |
| parent | 6c441e1d613a1f91a53bd215f2ed1f9559194f21 (diff) | |
intel_iommu: vtd_slpt_level_shift check level
This helps in debugging incorrect level passed in.
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/intel_iommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index ad304f681c..22d8226e43 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -168,6 +168,7 @@ static gboolean vtd_hash_remove_by_domain(gpointer key, gpointer value, /* The shift of an addr for a certain level of paging structure */ static inline uint32_t vtd_slpt_level_shift(uint32_t level) { + assert(level != 0); return VTD_PAGE_SHIFT_4K + (level - 1) * VTD_SL_LEVEL_BITS; } |