On Fri, Jan 23, 2015 at 09:52:07PM -0800, Guenter Roeck wrote: > On Fri, Jan 23, 2015 at 01:55:19PM -0800, Andrew Morton wrote: > > On Fri, 23 Jan 2015 07:07:56 -0800 Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > > > > >> > > > >> qemu:microblaze generates warnings to the console. > > > >> > > > >> WARNING: CPU: 0 PID: 32 at mm/mmap.c:2858 exit_mmap+0x184/0x1a4() > > > >> > > > >> with various call stacks. See > > > >> http://server.roeck-us.net:8010/builders/qemu-microblaze-mmotm/builds/15/steps/qemubuildcommand/logs/stdio > > > >> for details. > > > > > > > > Could you try patch below? Completely untested. > > > > > > > >>From b584bb8d493794f67484c0b57c161d61c02599bc Mon Sep 17 00:00:00 2001 > > > > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> > > > > Date: Fri, 23 Jan 2015 13:08:26 +0200 > > > > Subject: [PATCH] microblaze: define __PAGETABLE_PMD_FOLDED > > > > > > > > Microblaze uses custom implementation of PMD folding, but doesn't define > > > > __PAGETABLE_PMD_FOLDED, which generic code expects to see. Let's fix it. > > > > > > > > Defining __PAGETABLE_PMD_FOLDED will drop out unused __pmd_alloc(). > > > > It also fixes problems with recently-introduced pmd accounting. > > > > > > > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > > > > Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > > > > > Tested working. > > > > > > Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > > > > > Any idea how to fix the sh problem ? > > > > Can you tell us more about it? All I'm seeing is "qemu:sh fails to > > shut down", which isn't very clear. > > Turns out that the include file defining __PAGETABLE_PMD_FOLDED > was not always included where used, resulting in a messed up mm_struct. What means "messed up" here? It should only affect size of mm_struct. > The patch below fixes the problem for the sh architecture. > No idea if the patch is correct/acceptable for other architectures. That's pain. Some archs includes <linux/mm_types.h> from <asm/pgtable.h>. I don't see obvious way to fix this. Urghh. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>