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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-08-09 23:55:34 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-08-09 23:58:07 +0200 |
| commit | eff4f7477b38b5b794ce1ede7766af1dcb6f8fde (patch) | |
| tree | 870db1a361e7ad39d01d552f6ba4c7b3633ff3e2 /vm | |
| parent | 486fba5505fc0c579321fd8cc125bac8058d197f (diff) | |
Fix missing DMA32 limit
Rumpdisk needs to allocate dma32 memory areas, so we do always need this
limit.
The non-Xen x86_64 case had a typo, and the 32bit PAE case didn't have
the DMA32 limit.
Also, we have to cope with VM_PAGE_DMA32_LIMIT being either above or below
VM_PAGE_DIRECTMAP_LIMIT depending on the cases.
Diffstat (limited to 'vm')
| -rw-r--r-- | vm/vm_user.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/vm/vm_user.c b/vm/vm_user.c index df597267..18f79eda 100644 --- a/vm/vm_user.c +++ b/vm/vm_user.c @@ -607,11 +607,19 @@ kern_return_t vm_allocate_contiguous( selector = VM_PAGE_SEL_DMA; if (pmax > VM_PAGE_DMA_LIMIT) #ifdef VM_PAGE_DMA32_LIMIT +#if VM_PAGE_DMA32_LIMIT < VM_PAGE_DIRECTMAP_LIMIT selector = VM_PAGE_SEL_DMA32; if (pmax > VM_PAGE_DMA32_LIMIT) #endif +#endif selector = VM_PAGE_SEL_DIRECTMAP; if (pmax > VM_PAGE_DIRECTMAP_LIMIT) +#ifdef VM_PAGE_DMA32_LIMIT +#if VM_PAGE_DMA32_LIMIT > VM_PAGE_DIRECTMAP_LIMIT + selector = VM_PAGE_SEL_DMA32; + if (pmax > VM_PAGE_DMA32_LIMIT) +#endif +#endif selector = VM_PAGE_SEL_HIGHMEM; size = vm_page_round(size); |