Signed-off-by: David Woodhouse <[email protected]> --- drivers/iommu/intel-iommu.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index f5934fc..c3d4bc9 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1624,7 +1624,11 @@ static int domain_init(struct dmar_domain *domain, int
guest_width)
else
domain->iommu_snooping = 0;
- domain->iommu_superpage = fls(cap_super_page_val(iommu->cap));
+ if (intel_iommu_superpage)
+ domain->iommu_superpage = fls(cap_super_page_val(iommu->cap));
+ else
+ domain->iommu_superpage = 0;
+
domain->nid = iommu->node;
/* always allocate the top pgd */
--
1.8.5.3
--
dwmw2
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