Hi Subin, On Mon, Feb 20, 2012 at 6:47 PM, subin gangadharan <[email protected]> wrote: > Hi All, > > Please correct me if I am wrong. In linux each process will have its > own page tables, so when a interrupt happens processor will switch to > interrupt context > and execute the proper handler. So my doubt, if this is the case, > interrupt hanlder will be using the pagetables of the interrupted > process or is there a separate page table for this.
Yep - that's right. Conceptually you can imagine that the kernel page tables are replicated in each process, so when the interrupt occurs, the kernel mappings will always be in effect regardless of which task is running. How this is actually achieved may vary from architecture to architecture. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
