On Tue, Apr 06, 2010 at 01:41:37PM +0800, Xin, Xiaohui wrote: > Michael, > >> > >>For the DOS issue, I'm not sure how much the limit get_user_pages() > >> can pin is reasonable, should we compute the bindwidth to make it? > > >There's a ulimit for locked memory. Can we use this, decreasing > >the value for rlimit array? We can do this when backend is > >enabled and re-increment when backend is disabled. > > I have tried it with rlim[RLIMIT_MEMLOCK].rlim_cur, but I found > the initial value for it is 0x10000, after right shift PAGE_SHIFT, > it's only 16 pages we can lock then, it seems too small, since the > guest virito-net driver may submit a lot requests one time. > > > Thanks > Xiaohui Yes, that's the default, but system administrator can always increase this value with ulimit if necessary. -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
