76 lines
2.3 KiB
Diff
76 lines
2.3 KiB
Diff
--- a/xen/drivers/passthrough/vtd/intremap.c
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+++ b/xen/drivers/passthrough/vtd/intremap.c
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@@ -458,7 +458,7 @@ int intremap_setup(struct iommu *iommu)
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{
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dprintk(XENLOG_WARNING VTDPREFIX,
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"Cannot allocate memory for ir_ctrl->iremap_maddr\n");
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- return -ENODEV;
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+ return -ENOMEM;
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}
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ir_ctrl->iremap_index = -1;
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}
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--- a/xen/drivers/passthrough/vtd/iommu.c
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+++ b/xen/drivers/passthrough/vtd/iommu.c
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@@ -220,10 +220,10 @@ static u64 addr_to_dma_page_maddr(struct
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if ( !alloc )
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break;
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maddr = alloc_pgtable_maddr();
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+ if ( !maddr )
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+ break;
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dma_set_pte_addr(*pte, maddr);
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vaddr = map_vtd_domain_page(maddr);
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- if ( !vaddr )
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- break;
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/*
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* high level table always sets r/w, last level
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@@ -236,8 +236,6 @@ static u64 addr_to_dma_page_maddr(struct
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else
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{
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vaddr = map_vtd_domain_page(pte->val);
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- if ( !vaddr )
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- break;
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}
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if ( level == 2 )
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--- a/xen/drivers/passthrough/vtd/qinval.c
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+++ b/xen/drivers/passthrough/vtd/qinval.c
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@@ -429,7 +429,11 @@ int qinval_setup(struct iommu *iommu)
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{
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qi_ctrl->qinval_maddr = alloc_pgtable_maddr();
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if ( qi_ctrl->qinval_maddr == 0 )
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- panic("Cannot allocate memory for qi_ctrl->qinval_maddr\n");
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+ {
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+ dprintk(XENLOG_WARNING VTDPREFIX,
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+ "Cannot allocate memory for qi_ctrl->qinval_maddr\n");
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+ return -ENOMEM;
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+ }
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flush->context = flush_context_qi;
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flush->iotlb = flush_iotlb_qi;
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}
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--- a/xen/drivers/passthrough/vtd/x86/vtd.c
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+++ b/xen/drivers/passthrough/vtd/x86/vtd.c
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@@ -41,17 +41,19 @@ u64 alloc_pgtable_maddr(void)
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{
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struct page_info *pg;
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u64 *vaddr;
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+ unsigned long mfn;
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pg = alloc_domheap_page(NULL, 0);
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- vaddr = map_domain_page(page_to_mfn(pg));
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- if ( !vaddr )
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+ if ( !pg )
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return 0;
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+ mfn = page_to_mfn(pg);
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+ vaddr = map_domain_page(mfn);
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memset(vaddr, 0, PAGE_SIZE);
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iommu_flush_cache_page(vaddr);
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unmap_domain_page(vaddr);
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- return page_to_maddr(pg);
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+ return (u64)mfn << PAGE_SHIFT_4K;
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}
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void free_pgtable_maddr(u64 maddr)
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