On Wed, Dec 14, 2011 at 08:08:02AM +0000, Russell King - ARM Linux wrote: > On Wed, Dec 14, 2011 at 03:02:10PM +1100, Peter Chubb wrote: > > > > When kexec() runs, it eventually sets up a 1-to-1 memory map, then > > invokes cpu_reset(). When it invokes cpu_reset (which turns > > off the MMU), it does so at its virtual address. Across the code that > > disables the MMU, virtual and physical addresses have to be the same, > > otherwise after disabling the MMU, the PC is invalid. > > > > The simplest fix is to invoke cpu_reset() at its one-to-one mapped > > address. > > > > I've tested on KZM (arm v6) and Beagleboard (omap) > > NAK. > > Three reasons: > > 1. You've not signed-off the patch (please read > Documentation/SubmittingPatches) > 2. pre-ARMv6 do not expect this, and it will break where > PHYS_OFFSET >= PAGE_OFFSET > 3. Have you seen what's already queued for the next merge window? And 4. You didn't cc the linux-arm-kernel mailing list with your patch.
