2012/12/7 Andrew Morton <akpm at linux-foundation.org>: > On Fri, 7 Dec 2012 01:09:27 +0900 > Joonsoo Kim <js1304 at gmail.com> wrote: > >> I'm not sure that "7/8: makes vmlist only for kexec" is fine. >> Because it is related to userspace program. >> As far as I know, makedumpfile use kexec's output information and it only >> need first address of vmalloc layer. So my implementation reflect this >> fact, but I'm not sure. And now, I don't fully test this patchset. >> Basic operation work well, but I don't test kexec. So I send this >> patchset with 'RFC'. > > Yes, this is irritating. Perhaps Vivek or one of the other kexec > people could take a look at this please - if would obviously be much > better if we can avoid merging [patch 7/8] at all. I'm not sure, but I almost sure that [patch 7/8] have no problem. In kexec.c, they write an address of vmlist and offset of vm_struct's address field. It imply that user for this information doesn't have any other information about vm_struct, and they can't use other field of vm_struct. They can use *only* address field. So, remaining just one vm_struct for vmlist which represent first area of vmalloc layer may be safe. But, kexec people may be very helpful to validate this patch. Thanks.
