On Mon, 2010-09-13 at 17:55 +0200, Stephane Eranian wrote: > > Ok, so you're saying there is no allocator that will give non-contiguous > physical memory WITHOUT requiring a page fault to populate the pte. > > On the other hand, with vmalloc_node() the pte are populated when > you first touch the memory. That happens as part of memset() right after > the allocation and thus outside of NMI interrupt handler. > > Does this sound right?
Nope, in particular read: http://lkml.org/lkml/2010/7/14/465 The issue is that the vmalloc space can be mapped in different processes, and that memset() will only ensure its mapped in the current process, but the next one might need that fault to populate. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
