Vlastimil Babka <vbabka@xxxxxxx> writes: > On 08/03/2016 07:20 AM, Balbir Singh wrote: >> On Tue, 2016-08-02 at 18:49 +0530, Srikar Dronamraju wrote: >>> Fadump kernel reserves significant number of memory blocks. On a multi-node >>> machine, with CONFIG_DEFFERRED_STRUCT_PAGE support, fadump kernel fails to >>> boot. Fix this by disabling deferred page struct initialisation. >>> >> >> How much memory does a fadump kernel need? Can we bump up the limits depending >> on the config. I presume when you say fadump kernel you mean kernel with >> FADUMP in the config? >> >> BTW, I would much rather prefer a config based solution that does not select >> DEFERRED_INIT if FADUMP is enabled. > > IIRC the kdump/fadump kernel is typically the same vmlinux as the main > kernel, just with special initrd and boot params. So if you want > deferred init for the main kernel, this would be impractical. Yes. Distros won't build a separate kernel, so it has to work at runtime. cheers -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>