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- how to get physical memory address from virtual memory address
Hi , I am using Linux 2.4.20 Kernel. I am runing an application which will malloc and returns a virtual memory address. I need to get the physical memory address for that virtual memory address. How can I get that? Thanks in advance, -Hari- Method, apparatus and system for dynamically reassigning memory from one virtual machine to another
A method, apparatus and system enable a virtual machine manager (VMM) to dynamically reassign memory from one virtual machine (VM) to another. The VMM may generate a message to the VM to which the memory is currently assigned and inform the device that the memory is shutting down. The current...- Anyone know about computers Virtual memory Problem)
Hi My computer is shagged! I have deleted shitloads off my hard drive and am now down to the bear minimum yet the memory is non-existent i thought i had a virus but two checks have said No! Does anyone know what to do? It is a work computer so will not be fixed for a while anyone got any suggestions? The message your virtual memory is running low comes up all the time and i cant even use the internet with summit else Please Help!- Re: how to get physical memory address from virtual memory address
Hari wrote: There isn't one. You haven't allocated any physical memory, so the kernel doesn't give you any. DS- Re: how to get physical memory address from virtual memory address
Unless of course the memory is swapped out at the moment, which is entirely possible after a fresh malloc() of a big chunk of memory. Correct- Re: how to get physical memory address from virtual memory address
Really? So what happens when the page is swapped out? It's still a valid virtual address, but there's no valid physical address behind it, until it's swapped back in by a page-fault or the prefetcher. -n- Re: how to get physical memory address from virtual memory address
This is not a task that should be performed by the user-level process. You can't for example test the memory which is permanently mapped by kernel (which user-level process is not allowed to access). For memory diagnostics, tools specifically crafted for such tasks should be used (such as memtest86).
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