Messages in this thread Patch in this message | | | Date | Thu, 1 Apr 2004 14:49:24 +1000 | From | David Gibson <> | Subject | Add useful warning message in PPC64 hugepage code |
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Linus, please apply:
This patch adds a debugging message to the ppc64 hugepage code when we attempt to open the "low" (32-bit) hugepage window on PPC64, but can't because a (non-hugepage) mapping already exists in the region.
Index: working-2.6/arch/ppc64/mm/hugetlbpage.c =================================================================== --- working-2.6.orig/arch/ppc64/mm/hugetlbpage.c 2004-04-01 14:28:49.000000000 +1000 +++ working-2.6/arch/ppc64/mm/hugetlbpage.c 2004-04-01 14:32:30.430607144 +1000 @@ -253,8 +253,11 @@ /* Check no VMAs are in the region */ vma = find_vma(mm, TASK_HPAGE_BASE_32); - if (vma && (vma->vm_start < TASK_HPAGE_END_32)) + if (vma && (vma->vm_start < TASK_HPAGE_END_32)) { + printk(KERN_DEBUG "Low HTLB region busy: PID=%d vma @ %lx-%lx\n", + current->pid, vma->vm_start, vma->vm_end); return -EBUSY; + } /* Clean up any leftover PTE pages in the region */ spin_lock(&mm->page_table_lock); -- David Gibson | For every complex problem there is a david AT gibson.dropbear.id.au | solution which is simple, neat and | wrong. http://www.ozlabs.org/people/dgibson - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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