[Xen-devel] mini-os: sbrk() doesn't allocate pages?

[Gerd Hoffmann <kraxel@xxxxxxxxxx>]

  Hi,

I'm wondering how the mini-os heap allocater work.  The sbrk() function
in mm.c seems to *not* allocate pages for the heap.  Instead it uses the
zero page and maps it into the heap space when a new page is needed ...

I can't believe is is supposed to work that way.  Is that a bug?  Did I
miss some logic somewhere in the code?

wondering,
  Gerd

-- 
http://kraxel.fedorapeople.org/xenner/

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