On Sat, Jan 10, 2015 at 03:14:33PM +0000, George Bush wrote: > Hi all > > I notice we have hibernation.c in arm/kernel, however, I don't find it in > arm64. > Does it mean arm64 do not support hibernation/suspend-to-disk function?
Yes, not at the moment, but we have planned to implement it. > I tried some path to search the reason, but found nothing, they all say arm64 > has the backward compatibility. So I send this email to the community and > hope to get the reason. > Thanks! > > I ported the arm hibernation.c to arm64/kernel(with LP64), but failed in a > strange way. When I do resume, the arch_restore_image() get a page_fault > when it calls the copy_page(), like: > "Unable to handle kernel paging request at virtual address 0xffffffbc055c3fa8" > I'm sure the copy_page()'s parameters is in the memory area, why and how > I get the strange address 0xffffffbc055c3fa8? > > vmalloc: 0xffffff8000000000 - 0xffffffbb00000000 > vmemmap: 0xffffffbc01400000 - 0xffffffbc04f88000 > modules: 0xffffffbffc000000 - 0xffffffc000000000 > memory: 0xffffffc000000000 - 0xffffffc0be800000 > > > Look forward to your reply, thanks! We need your patch, kernel version, config file, your board/SoC HW details before even assuming what is happening. Please provide them and I am happy to help you implement suspend-to-disk on arm64 properly. Thanks, Lorenzo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
