Attachment 328617 Details for Bug 553690

[patch] debugging patch (kernel, v2)

553690.patch (text/plain), 1.11 KB, created by Jan Beulich on 2009-11-20 09:46:40 UTC

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Creator: Jan Beulich

Created: 2009-11-20 09:46:40 UTC

Size: 1.11 KB

patch

obsolete

>--- 11.2-2009-11-12.orig/lib/swiotlb-xen.c	2009-11-19 17:02:18.000000000 +0100
>+++ 11.2-2009-11-12/lib/swiotlb-xen.c	2009-11-20 10:35:12.000000000 +0100
>@@ -450,6 +450,9 @@ do_unmap_single(struct device *hwdev, ch
> 	int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
> 	phys_addr_t phys = io_tlb_orig_addr[index];
> 
>+for(i = 1; i < nslots; ++i) {//temp
>+ BUG_ON((phys ^ io_tlb_orig_addr[index + i]) & ((1 << IO_TLB_SHIFT) - 1));
>+}
> 	/*
> 	 * First, sync the memory before unmapping the entry
> 	 */
>@@ -676,6 +679,15 @@ swiotlb_map_sg_attrs(struct device *hwde
> 		phys_addr_t paddr = page_to_pseudophys(sg_page(sg))
> 				   + sg->offset;
> 
>+if(dir != DMA_TO_DEVICE && sg->offset + sg->length > PAGE_SIZE) {//temp
>+ u8*p = sg_virt(sg);
>+ long offs = sg->offset + sg->length - 1;
>+ do {
>+  __asm__ __volatile__("lock orb $0, %0" : : "m" (p[offs]));
>+  offs -= PAGE_SIZE;
>+ } while(offs >= (long)sg->offset);
>+ WARN(sg->offset, "sg%d@%p[%d/%d] v=%p+%x:%x\n", dir, sgl, i, nelems, p, sg->offset, sg->length);
>+}
> 		if (range_needs_mapping(paddr, sg->length)
> 		    || address_needs_mapping(hwdev, dev_addr, sg->length)) {
> 			void *map;

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Attachments on bug 553690: 326328 | 326595 | 326606 | 328220 | 328458 | 328502 | 328503 | 328617 | 328693 | 328910