Hi Josh,

FYI, there are new compile warnings show up in

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/efi
head:   ba49efa14f97ca6fe57390539e70a359aea779cd
commit: 429c5a7fa9294e9792116d6ba1016b2cf39572e4 [9/11] efi: Add a function to look up existing IO memory mappings
config: i386-randconfig-b084 (attached as .config)

All warnings:

arch/x86/platform/efi/efi.c: In function 'efi_lookup_mapped_addr':
arch/x86/platform/efi/efi.c:801:11: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

vim +801 arch/x86/platform/efi/efi.c

429c5a7f (Josh Triplett 2012-09-08  785) {
429c5a7f (Josh Triplett 2012-09-08  786) 	void *p;
429c5a7f (Josh Triplett 2012-09-08  787) 	if (WARN_ON(!memmap.map))
429c5a7f (Josh Triplett 2012-09-08  788) 		return NULL;
429c5a7f (Josh Triplett 2012-09-08  789) 	for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
429c5a7f (Josh Triplett 2012-09-08  790) 		efi_memory_desc_t *md = p;
429c5a7f (Josh Triplett 2012-09-08  791) 		u64 size = md->num_pages << EFI_PAGE_SHIFT;
429c5a7f (Josh Triplett 2012-09-08  792) 		u64 end = md->phys_addr + size;
429c5a7f (Josh Triplett 2012-09-08  793) 		if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
429c5a7f (Josh Triplett 2012-09-08  794) 		    md->type != EFI_BOOT_SERVICES_CODE &&
429c5a7f (Josh Triplett 2012-09-08  795) 		    md->type != EFI_BOOT_SERVICES_DATA)
429c5a7f (Josh Triplett 2012-09-08  796) 			continue;
429c5a7f (Josh Triplett 2012-09-08  797) 		if (!md->virt_addr)
429c5a7f (Josh Triplett 2012-09-08  798) 			continue;
429c5a7f (Josh Triplett 2012-09-08  799) 		if (phys_addr >= md->phys_addr && phys_addr < end) {
429c5a7f (Josh Triplett 2012-09-08  800) 			phys_addr += md->virt_addr - md->phys_addr;
429c5a7f (Josh Triplett 2012-09-08 @801) 			return (__force void __iomem *)phys_addr;
429c5a7f (Josh Triplett 2012-09-08  802) 		}
429c5a7f (Josh Triplett 2012-09-08  803) 	}
429c5a7f (Josh Triplett 2012-09-08  804) 	return NULL;
429c5a7f (Josh Triplett 2012-09-08  805) }
429c5a7f (Josh Triplett 2012-09-08  806) 
429c5a7f (Josh Triplett 2012-09-08  807) /*
5b83683f (Huang, Ying   2008-01-30  808)  * This function will switch the EFI runtime services to virtual mode.
5b83683f (Huang, Ying   2008-01-30  809)  * Essentially, look through the EFI memmap and map every region that

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu, Yuanhan Liu                              Intel Corporation