[bikeshed] Re: Qemu Memory issue
- From: Christopher Hossenlopp <chris@xxxxxxxxxxxxxxxxxxx>
- To: "WALTER LITWINCZYK (RIT Student)" <wtl4112@xxxxxxx>
- Date: Thu, 24 May 2012 00:02:29 -0400
I miss c_printf. :(
On May 23, 2012, at 11:02 PM, WALTER LITWINCZYK (RIT Student) wrote:
> To follow up on the heap question:
>
> Processes don't really have a notion of heap right now. They're given the
> bare minimum. So if you want to map something into a user process the easier
> way is have a system call and then call __virt_map_page() to where you want
> to map stuff and that should map it into whatever process called it.
>
> Otherwise if you want to map into another process from the current process
> you'd have to search all the processes and then call
> __virt_switch_page_directory() with the pcb->page_directory field of the pcb
> you found and then do the mapping, don't forget to map back with
> __virt_switch_page_directory(_current->page_directory) before you return
>
>
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