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swiotlb-xen: limit init retries
Due to the use of max(1024, ...) there's no point retrying (and issuing bogus log messages) when the number of slabs is already no larger than this minimum value. Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/984fa426-2b7b-4b77-5ce8-766619575b7f@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>
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@ -207,7 +207,7 @@ int __ref xen_swiotlb_init(void)
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swiotlb_set_max_segment(PAGE_SIZE);
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return 0;
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error:
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if (repeat--) {
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if (nslabs > 1024 && repeat--) {
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/* Min is 2MB */
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nslabs = max(1024UL, ALIGN(nslabs >> 1, IO_TLB_SEGSIZE));
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bytes = nslabs << IO_TLB_SHIFT;
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@ -243,7 +243,7 @@ void __init xen_swiotlb_init_early(void)
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rc = xen_swiotlb_fixup(start, nslabs);
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if (rc) {
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memblock_free(__pa(start), PAGE_ALIGN(bytes));
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if (repeat--) {
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if (nslabs > 1024 && repeat--) {
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/* Min is 2MB */
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nslabs = max(1024UL, ALIGN(nslabs >> 1, IO_TLB_SEGSIZE));
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bytes = nslabs << IO_TLB_SHIFT;
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