Messages in this thread | | | Date | Tue, 17 May 2005 15:12:02 +0200 | From | Andrea Arcangeli <> | Subject | Re: [PATCH] Factor in buddy allocator alignment requirements in node memory alignment |
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On Mon, May 16, 2005 at 01:47:19PM -0700, Dave Hansen wrote: > Just because it complains doesn't mean that anything is actually > wrong :) > > Do you know which pieces of code actually break if the alignment doesn't > meet what that warning says?
Be sure in early 2001 the alpha wildfire wasn't booting without having natural alingment from the 2^order allocation, after several days of debugging and crashing eventually I figured it out and added the printk (it couldn't be a BUG since it was early in the boot to see it). The kernel stack on x86 w/o 4k stacks depends on the natural alignment of the 2^order buddy allocations for example. No idea how much other code would break with not naturally aligned 2^order allocations. - 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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