Messages in this thread | | | Subject | RE: [Patch] Move swiotlb_init early on X86_64 | Date | Thu, 2 Mar 2006 17:09:37 +0800 | From | "Zhang, Yanmin" <> |
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>>-----Original Message----- >>From: linux-kernel-owner@vger.kernel.org [mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Zou Nan hai >>Sent: 2006年3月2日 12:33 >> >>Really, then how about the following patch? >> >>Let normal bootmem allocator go above 4G first. >>This will save more memory with address less than 4G. >> >>Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> >> >>--- linux-2.6.16-rc5/mm/bootmem.c 2006-03-03 08:31:52.000000000 +0800 >>+++ b/mm/bootmem.c 2006-03-03 09:05:17.000000000 +0800 >>@@ -381,16 +381,24 @@ unsigned long __init free_all_bootmem (v >> return(free_all_bootmem_core(NODE_DATA(0))); >> } >> >>+#define LOW32LIMIT 0xffffffff >>+ >> void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal) >> { >> pg_data_t *pgdat = pgdat_list; >> void *ptr; >> >>+ if (goal < LOW32LIMIT) { On i386, above is always true.
>>+ for_each_pgdat(pgdat) >>+ if ((ptr = __alloc_bootmem_core(pgdat->bdata, size, >>+ align, LOW32LIMIT, 0))) >>+ return(ptr); >>+ } - 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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