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| author | Tom Lyon <pugs@cisco.com> | 2010-05-17 08:19:52 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-05-17 08:34:20 +0100 |
| commit | 8954da1f82a468deeeae3683252b5440e7f4ccbe (patch) | |
| tree | 3d9d7c6899f7757c68a4ccf5b38ad128d0d3dd7c /drivers/pci/intel-iommu.c | |
| parent | a99c47a228c194aa75bffdcb82806c5f33c7c63b (diff) | |
| download | linux-8954da1f82a468deeeae3683252b5440e7f4ccbe.tar.gz linux-8954da1f82a468deeeae3683252b5440e7f4ccbe.tar.bz2 linux-8954da1f82a468deeeae3683252b5440e7f4ccbe.zip | |
intel-iommu: intel_iommu_map_range failed at very end of address space
intel_iommu_map_range() doesn't allow allocation at the very end of the
address space; that code has been simplified and corrected.
Signed-off-by: Tom Lyon <pugs@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/pci/intel-iommu.c')
| -rw-r--r-- | drivers/pci/intel-iommu.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 57be89e6f484..65741dc491d6 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3626,7 +3626,6 @@ static int intel_iommu_map_range(struct iommu_domain *domain, { struct dmar_domain *dmar_domain = domain->priv; u64 max_addr; - int addr_width; int prot = 0; int ret; @@ -3639,18 +3638,14 @@ static int intel_iommu_map_range(struct iommu_domain *domain, max_addr = iova + size; if (dmar_domain->max_addr < max_addr) { - int min_agaw; u64 end; /* check if minimum agaw is sufficient for mapped address */ - min_agaw = vm_domain_min_agaw(dmar_domain); - addr_width = agaw_to_width(min_agaw); - end = DOMAIN_MAX_ADDR(addr_width); - end = end & VTD_PAGE_MASK; + end = __DOMAIN_MAX_ADDR(dmar_domain->gaw) + 1; if (end < max_addr) { - printk(KERN_ERR "%s: iommu agaw (%d) is not " + printk(KERN_ERR "%s: iommu width (%d) is not " "sufficient for the mapped address (%llx)\n", - __func__, min_agaw, max_addr); + __func__, dmar_domain->gaw, max_addr); return -EFAULT; } dmar_domain->max_addr = max_addr; |