Subject: + mm-arm64-kill-poison_init_mem.patch added to -mm tree To: liuj97@xxxxxxxxx,arnd@xxxxxxxx,catalin.marinas@xxxxxxx,cmetcalf@xxxxxxxxxx,dhowells@xxxxxxxxxx,geert@xxxxxxxxxxxxxx,hpa@xxxxxxxxx,isimatu.yasuaki@xxxxxxxxxxxxxx,jeremy@xxxxxxxx,jiang.liu@xxxxxxxxxx,js1304@xxxxxxxxx,kamezawa.hiroyu@xxxxxxxxxxxxxx,konrad.wilk@xxxxxxxxxx,m.szyprowski@xxxxxxxxxxx,mel@xxxxxxxxx,minchan@xxxxxxxxxx,mingo@xxxxxxxxxx,mst@xxxxxxxxxx,riel@xxxxxxxxxx,rmk@xxxxxxxxxxxxxxxx,rusty@xxxxxxxxxxxxxxx,sworddragon2@xxxxxxx,tangchen@xxxxxxxxxxxxxx,tglx@xxxxxxxxxxxxx,tj@xxxxxxxxxx,walken@xxxxxxxxxx,wency@xxxxxxxxxxxxxx,will.deacon@xxxxxxx,wujianguo@xxxxxxxxxx,yinghai@xxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Thu, 30 May 2013 15:16:52 -0700 The patch titled Subject: mm/ARM64: kill poison_init_mem() has been added to the -mm tree. Its filename is mm-arm64-kill-poison_init_mem.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Jiang Liu <liuj97@xxxxxxxxx> Subject: mm/ARM64: kill poison_init_mem() Use free_reserved_area() to poison initmem memory pages and kill poison_init_mem() on ARM64. Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx> Cc: <sworddragon2@xxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx> Cc: Jianguo Wu <wujianguo@xxxxxxxxxx> Cc: Joonsoo Kim <js1304@xxxxxxxxx> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> Cc: Mel Gorman <mel@xxxxxxxxx> Cc: Michel Lespinasse <walken@xxxxxxxxxx> Cc: Minchan Kim <minchan@xxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Cc: Tang Chen <tangchen@xxxxxxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Wen Congyang <wency@xxxxxxxxxxxxxx> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> Cc: Yinghai Lu <yinghai@xxxxxxxxxx> Cc: Russell King <rmk@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/arm64/mm/init.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff -puN arch/arm64/mm/init.c~mm-arm64-kill-poison_init_mem arch/arm64/mm/init.c --- a/arch/arm64/mm/init.c~mm-arm64-kill-poison_init_mem +++ a/arch/arm64/mm/init.c @@ -197,14 +197,6 @@ void __init bootmem_init(void) max_pfn = max_low_pfn = max; } -/* - * Poison init memory with an undefined instruction (0x0). - */ -static inline void poison_init_mem(void *s, size_t count) -{ - memset(s, 0, count); -} - #ifndef CONFIG_SPARSEMEM_VMEMMAP static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) { @@ -386,8 +378,7 @@ void __init mem_init(void) void free_initmem(void) { - poison_init_mem(__init_begin, __init_end - __init_begin); - free_initmem_default(-1); + free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD @@ -396,10 +387,8 @@ static int keep_initrd; void free_initrd_mem(unsigned long start, unsigned long end) { - if (!keep_initrd) { - poison_init_mem((void *)start, PAGE_ALIGN(end) - start); - free_reserved_area((void *)start, (void *)end, -1, "initrd"); - } + if (!keep_initrd) + free_reserved_area((void *)start, (void *)end, 0, "initrd"); } static int __init keepinitrd_setup(char *__unused) _ Patches currently in -mm which might be from liuj97@xxxxxxxxx are linux-next.patch mm-change-signature-of-free_reserved_area-to-fix-building-warnings.patch mm-enhance-free_reserved_area-to-support-poisoning-memory-with-zero.patch mm-arm64-kill-poison_init_mem.patch mm-x86-use-free_reserved_area-to-simplify-code.patch mm-tile-use-common-help-functions-to-free-reserved-pages.patch mm-fix-some-trivial-typos-in-comments.patch mm-use-managed_pages-to-calculate-default-zonelist-order.patch mm-accurately-calculate-zone-managed_pages-for-highmem-zones.patch mm-use-a-dedicated-lock-to-protect-totalram_pages-and-zone-managed_pages.patch mm-make-__free_pages_bootmem-only-available-at-boot-time.patch mm-correctly-update-zone-managed_pages.patch mm-correctly-update-zone-managed_pages-fix.patch mm-concentrate-modification-of-totalram_pages-into-the-mm-core.patch mm-report-available-pages-as-memtotal-for-each-numa-node.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html