Re: Implement paging on the pci arbiter

[Joan Lledó]

Hi,

El 3/11/20 a les 23:13, Samuel Thibault ha escrit:
> 
> That would probably work, yes.
> 
> 

I got something pushed to my branch at [1]. But I found the
implementation for pager proxies in gnu mach is incomplete. In
particular I can't restrict a range to be mapped. I think I could fix it
but need some help.

- Would it be enough to add the range info to the memory_object_proxy
  struct and then read them from vm_map and use them to restrict the
  values of the offset and size being sent to vm_map_enter?
  (vm_user.c:395)
- Why is the proxy interface designed to work with arrays? Is vm_map
  supposed to call vm_map_enter multiple times for proxies?

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1. http://git.savannah.gnu.org/cgit/hurd/hurd.git/log/?h=jlledom-pci-mem