Hi, On 07/29/2015 03:21 AM, Yinghai Lu wrote:
E820_RESERVED_KERN was introduced to do early allocation for setup_data when we were using original early_res with e820 map.Now we are using memblock to do early resource reserve/allocation, and setup_data is reserved in memblock early already. For kexec path, kexec generate setup_data (Now kexec-tools create SETUP_EFI and SETUP_E820_EXT), and pass pointer to second kernel, and second kernel reserve setup_data by their own without using e820 map. So we do not need to touch e820 map at all, and we can kill E820_RESERVED_KERN. That make the code simpler, and at same time that will fix bug with hibernation: mark_nonsave_region that can not handle that case: E820_RAM and E820_RESERVED_KERN ranges are continuous and boundary is not page aligned. Link: https://bugzilla.opensuse.org/show_bug.cgi?id=913885 Link: https://bugzilla.kernel.org/show_bug.cgi?id=96111
I've tested Hibernation on latest 4.2.-rc7 and encountered panic when resuming, so I guess this patch has not been merged upstream: BUG: unable to handle kernel paging request at ffff880085894000 IP: [<ffffffff810c5dc2>] load_image_lzo+0x8c2/0xe70 With current patch and Lee, Chun-Yi's patch applied, the panic disappeared, would someone please have a look at this patch, thanks a lot. Best Regards, Yu -- 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/
