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iommu/vt-d: Loose requirement for flush queue initializaton 

Currently if flush queue initialization fails, we return error
or enforce the system-wide strict mode. These are unnecessary
because we always check the existence of a flush queue before
queuing any iova's for lazy flushing. Printing a informational
message is enough.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2020-01-02 08:18:13 +08:00 committed by Joerg Roedel
parent 10f8008f0f
commit 8e3391cfdc
1 changed files with 6 additions and 8 deletions
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14
drivers/iommu/intel-iommu.c
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@ -1854,15 +1854,15 @@ static int domain_init(struct dmar_domain *domain, struct intel_iommu *iommu,
{
int adjust_width, agaw;
unsigned long sagaw;
int err;
int ret;
init_iova_domain(&domain->iovad, VTD_PAGE_SIZE, IOVA_START_PFN);
if (!intel_iommu_strict) {
err = init_iova_flush_queue(&domain->iovad,
ret = init_iova_flush_queue(&domain->iovad,
iommu_flush_iova, iova_entry_free);
if (err)
return err;
if (ret)
pr_info("iova flush queue initialization failed\n");
}
domain_reserve_special_ranges(domain);
@ -5222,10 +5222,8 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type)
ret = init_iova_flush_queue(&dmar_domain->iovad,
iommu_flush_iova,
iova_entry_free);
if (ret) {
pr_warn("iova flush queue initialization failed\n");
intel_iommu_strict = 1;
}
if (ret)
pr_info("iova flush queue initialization failed\n");
}
domain_update_iommu_cap(dmar_domain);