tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: replacing extent(9) with vmem(9): lessons learned

On Thu, Dec 03, 2009 at 01:32:00PM +0100, Christoph Egger wrote:
> Problem 4: vmem(9) does not allocate page aligned memory through kmem(9).
>       This is a problem e.g. for Xen where page-aligned memory is required for
>       the ring buffers. A workaround is to use uvm_km_alloc().

kmem(9) does not ask vmem(9) for page-aligned memory using
vmem_xalloc(9), although it could.  I don't see why that is a vmem(9)


David Young             OJC Technologies      Urbana, IL * (217) 278-3933

Home | Main Index | Thread Index | Old Index