Drop the pgtable_t variable from all implementation for pte_fn_t as none of
them use it. apply_to_pte_range() should stop computing it as well. Should
help us save some cycles.
Signed-off-by: Anshuman Khandual
Cc: Ard Biesheuvel
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Thomas
On 05/02/2019 07:16 PM, Matthew Wilcox wrote:
> On Thu, May 02, 2019 at 06:48:46PM +0530, Anshuman Khandual wrote:
>> Drop the pgtable_t variable from all implementation for pte_fn_t as none of
>> them use it. apply_to_pte_range() should stop computing it as well. Should
>&
On 10/22/2019 10:42 PM, David Hildenbrand wrote:
> Our onlining/offlining code is unnecessarily complicated. Only memory
> blocks added during boot can have holes. Hotplugged memory never has
> holes. That memory is already online.
Why hot plugged memory at runtime cannot have holes (e.g a semi b
On 2/22/22 9:05 PM, Christoph Hellwig wrote:
> Allow to pass a remap argument to the swiotlb initialization functions
> to handle the Xen/x86 remap case. ARM/ARM64 never did any remapping
> from xen_swiotlb_fixup, so we don't even need that quirk.
>
> Signed-off-by: Christoph Hellwig
> ---
> ar
On 2/22/22 9:05 PM, Christoph Hellwig wrote:
> The IOMMU table tries to separate the different IOMMUs into different
> backends, but actually requires various cross calls.
>
> Rewrite the code to do the generic swiotlb/swiotlb-xen setup directly
> in pci-dma.c and then just call into the IOMMU d
eturn swiotlb_map(dev, phys, size, dir, attrs);
>
> if (unlikely(!dma_capable(dev, dma_addr, size, true))) {
> - if (swiotlb_force != SWIOTLB_NO_FORCE)
> + if (is_swiotlb_active(dev))
> return swiotlb_map(dev, phys, size, dir, attrs);
>
size_t tbl_size, slots_size;
>
> + if (swiotlb_force == SWIOTLB_FORCE)
> + return;
> +
> if (!mem->nslabs)
> return;
>
>
Reviewed-by: Anshuman Khandual
swiotlb_init_with_tbl(char *tlb, unsigned long
> nslabs, int verbose)
>
> if (verbose)
> swiotlb_print_info();
> - swiotlb_set_max_segment(mem->nslabs << IO_TLB_SHIFT);
> return 0;
> }
>
> @@ -368,7 +355,6 @@ swiotlb_late_init_with_tbl(char *tlb, unsigned long
> nslabs)
> swiotlb_init_io_tlb_mem(mem, virt_to_phys(tlb), nslabs, true);
>
> swiotlb_print_info();
> - swiotlb_set_max_segment(mem->nslabs << IO_TLB_SHIFT);
> return 0;
> }
>
Reviewed-by: Anshuman Khandual
like above, but with some error catching.
> */
> -int
> -swiotlb_late_init_with_default_size(size_t default_size)
> +int swiotlb_init_late(size_t size)
> {
> - unsigned long nslabs =
> - ALIGN(default_size >> IO_TLB_SHIFT, IO_TLB_SEGSIZE);
> + unsigned long nslabs = ALIGN(size >> IO_TLB_SHIFT, IO_TLB_SEGSIZE);
> unsigned long bytes;
> unsigned char *vstart = NULL;
> unsigned int order;
>
Reviewed-by: Anshuman Khandual
; - vstart = (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN,
> + vstart = (void *)__get_free_pages(gfp_mask | __GFP_NOWARN,
> order);
> if (vstart)
> break;
>
Reviewed-by: Anshuman Khandual
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