On Wed, Sep 28, 2016 at 8:06 AM, Madhu K <[email protected]> wrote: > Hi All, > > This is to understand the Virtual address space.Basically who generates the > virtual addresses CPU or GNU compiler? > > Thanks > Madhu > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
In no way does this response claim to be based on personal expert knowledge, but if my understanding of Chapter 2 (Page tables) of https://pdos.csail.mit.edu/6.828/2016/xv6/book-rev9.pdf is correct, it is the hardware that performs the mapping of physical memory, RAM, to virtual addresses on x86: Quote: As a reminder, x86 instructions (both user and kernel) manipulate virtual addresses. The machine’s RAM, or physical memory, is indexed with physical addresses. The x86 page table hardware connects these two kinds of addresses, by mapping each virtual address to a physical address. _______________________________________________ Kernelnewbies mailing list [email protected] https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
