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authorLinus Torvalds <torvalds@linux-foundation.org>2023-08-30 06:32:10 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-08-30 06:32:10 +0300
commit6c1b980a7e79e55e951b4b2c47eefebc75071209 (patch)
tree75fadaa5bc0b8bb1b488bd107926cdb6373c3946 /mm
parent3d3dfeb3aec7b612d266d500c82054f1fded4980 (diff)
parentd069ed288ac74c24e2b1c294aa9445c80ed6c518 (diff)
downloadlinux-6c1b980a7e79e55e951b4b2c47eefebc75071209.tar.xz
Merge tag 'dma-mapping-6.6-2023-08-29' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-maping updates from Christoph Hellwig: - allow dynamic sizing of the swiotlb buffer, to cater for secure virtualization workloads that require all I/O to be bounce buffered (Petr Tesarik) - move a declaration to a header (Arnd Bergmann) - check for memory region overlap in dma-contiguous (Binglei Wang) - remove the somewhat dangerous runtime swiotlb-xen enablement and unexport is_swiotlb_active (Christoph Hellwig, Juergen Gross) - per-node CMA improvements (Yajun Deng) * tag 'dma-mapping-6.6-2023-08-29' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: optimize get_max_slots() swiotlb: move slot allocation explanation comment where it belongs swiotlb: search the software IO TLB only if the device makes use of it swiotlb: allocate a new memory pool when existing pools are full swiotlb: determine potential physical address limit swiotlb: if swiotlb is full, fall back to a transient memory pool swiotlb: add a flag whether SWIOTLB is allowed to grow swiotlb: separate memory pool data from other allocator data swiotlb: add documentation and rename swiotlb_do_find_slots() swiotlb: make io_tlb_default_mem local to swiotlb.c swiotlb: bail out of swiotlb_init_late() if swiotlb is already allocated dma-contiguous: check for memory region overlap dma-contiguous: support numa CMA for specified node dma-contiguous: support per-numa CMA for all architectures dma-mapping: move arch_dma_set_mask() declaration to header swiotlb: unexport is_swiotlb_active x86: always initialize xen-swiotlb when xen-pcifront is enabling xen/pci: add flag for PCI passthrough being possible
Diffstat (limited to 'mm')
-rw-r--r--mm/cma.c10
-rw-r--r--mm/slab_common.c5
2 files changed, 9 insertions, 6 deletions
diff --git a/mm/cma.c b/mm/cma.c
index 4880f72102fa..da2967c6a223 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -267,6 +267,9 @@ int __init cma_declare_contiguous_nid(phys_addr_t base,
if (alignment && !is_power_of_2(alignment))
return -EINVAL;
+ if (!IS_ENABLED(CONFIG_NUMA))
+ nid = NUMA_NO_NODE;
+
/* Sanitise input arguments. */
alignment = max_t(phys_addr_t, alignment, CMA_MIN_ALIGNMENT_BYTES);
if (fixed && base & (alignment - 1)) {
@@ -372,14 +375,15 @@ int __init cma_declare_contiguous_nid(phys_addr_t base,
if (ret)
goto free_mem;
- pr_info("Reserved %ld MiB at %pa\n", (unsigned long)size / SZ_1M,
- &base);
+ pr_info("Reserved %ld MiB at %pa on node %d\n", (unsigned long)size / SZ_1M,
+ &base, nid);
return 0;
free_mem:
memblock_phys_free(base, size);
err:
- pr_err("Failed to reserve %ld MiB\n", (unsigned long)size / SZ_1M);
+ pr_err("Failed to reserve %ld MiB on node %d\n", (unsigned long)size / SZ_1M,
+ nid);
return ret;
}
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 01cdbf122463..cd71f9581e67 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -895,10 +895,9 @@ void __init setup_kmalloc_cache_index_table(void)
static unsigned int __kmalloc_minalign(void)
{
-#ifdef CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC
- if (io_tlb_default_mem.nslabs)
+ if (IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) &&
+ is_swiotlb_allocated())
return ARCH_KMALLOC_MINALIGN;
-#endif
return dma_get_cache_alignment();
}