The IVRS ACPI table specifies maximum address sizes for I/O virtual addresses. When allocating new protection domains that perform translation, propagate these limits as the domain's geometry / aperture.
Based on prior work by Marius Hillenbrand. Signed-off-by: Sebastian Ott <seb...@amazon.de> Cc: Benjamin Serebrin <sereb...@amazon.com> Cc: Filippo Sironi <sir...@amazon.de> CR: https://code.amazon.com/reviews/CR-26408353 --- drivers/iommu/amd/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index acab35220d98..b3f79820fd6d 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2382,7 +2382,7 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type) return NULL; domain->domain.geometry.aperture_start = 0; - domain->domain.geometry.aperture_end = ~0ULL; + domain->domain.geometry.aperture_end = amd_iommu_max_va; domain->domain.geometry.force_aperture = true; if (type == IOMMU_DOMAIN_DMA && -- 2.17.1 Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
