Messages in this thread |  | | Date | Wed, 08 May 2002 08:12:12 -0700 | From | "Martin J. Bligh" <> | Subject | Re: x86 question: Can a process have > 3GB memory? |
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>> Hey Cliff, we are planning to implement virtwin() if you remember that >> from PTX. AWE on NT was derived from the same work. There should soon >> be some discussion about it on lse-tech@lists.sourceforge.net or I can >> give you some more data... > > Please implement it in userspace, using large POSIX shared memory > segments and mmaping / munmapping them as needed. > > This seems like a special enough case to keep it out of the kernel > entirely. If there's something not efficient enough we could work > on optimising the whole mmap & munmap path...
How are you going to change the user page tables from userspace? This mechanism would seem to need kernel support however you did it.
M.
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