On 16:05-20150120, Kirill A. Shutemov wrote: > Russell King - ARM Linux wrote: > > On Tue, Jan 20, 2015 at 02:16:43AM +0200, Kirill A. Shutemov wrote: > > > Better option would be converting 2-lvl ARM configuration to > > > <asm-generic/pgtable-nopmd.h>, but I'm not sure if it's possible. > > > > Well, IMHO the folded approach in asm-generic was done the wrong way > > which barred ARM from ever using it. > > Okay, I see. > > Regarding the topic bug. Completely untested patch is below. Could anybody > check if it helps? > > From 34b9182d08ef2b541829e305fcc91ef1d26b27ea Mon Sep 17 00:00:00 2001 > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> > Date: Tue, 20 Jan 2015 15:47:22 +0200 > Subject: [PATCH] arm: define __PAGETABLE_PMD_FOLDED for !LPAE > > ARM uses custom implementation of PMD folding in 2-level page table case. > Generic code expects to see __PAGETABLE_PMD_FOLDED to be defined if PMD is > folded, but ARM doesn't do this. Let's fix it. > > Defining __PAGETABLE_PMD_FOLDED will drop out unused __pmd_alloc(). > It also fixes problems with recently-introduced pmd accounting on ARM > without LPAE. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Reported-by: Nishanth Menon <nm@xxxxxx> > --- > arch/arm/include/asm/pgtable-2level.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h > index bcc5e300413f..bfd662e49a25 100644 > --- a/arch/arm/include/asm/pgtable-2level.h > +++ b/arch/arm/include/asm/pgtable-2level.h > @@ -10,6 +10,8 @@ > #ifndef _ASM_PGTABLE_2LEVEL_H > #define _ASM_PGTABLE_2LEVEL_H > > +#define __PAGETABLE_PMD_FOLDED > + > /* > * Hardware-wise, we have a two level page table structure, where the first > * level has 4096 entries, and the second level has 256 entries. Each entry > -- > 2.1.4 Above helps the TI platforms 1: am335x-evm: BOOT: PASS: am335x-evm.txt 2: am335x-sk: BOOT: PASS: am335x-sk.txt 3: am3517-evm: BOOT: PASS: am3517-evm.txt 4: am37x-evm: BOOT: PASS: am37x-evm.txt 5: am437x-sk: BOOT: PASS: am437x-sk.txt 6: am43xx-epos: BOOT: PASS: am43xx-epos.txt 7: am43xx-gpevm: BOOT: PASS: am43xx-gpevm.txt 8: BeagleBoard-X15(am57xx-evm): BOOT: PASS: am57xx-evm.txt 9: BeagleBoard-XM: BOOT: PASS: beagleboard.txt 10: beagleboard-vanilla: BOOT: PASS: beagleboard-vanilla.txt 11: beaglebone-black: BOOT: PASS: beaglebone-black.txt 12: beaglebone: BOOT: PASS: beaglebone.txt 13: craneboard: BOOT: PASS: craneboard.txt 14: dra72x-evm: BOOT: PASS: dra72x-evm.txt 15: dra7xx-evm: BOOT: PASS: dra7xx-evm.txt 16: OMAP3430-Labrador(LDP): BOOT: PASS: ldp.txt 17: n900: BOOT: FAIL: n900.txt (legacy issue with my farm) 18: omap5-evm: BOOT: PASS: omap5-evm.txt 19: pandaboard-es: BOOT: PASS: pandaboard-es.txt 20: pandaboard-vanilla: BOOT: PASS: pandaboard-vanilla.txt 21: sdp2430: BOOT: PASS: sdp2430.txt 22: sdp3430: BOOT: PASS: sdp3430.txt 23: sdp4430: BOOT: PASS: sdp4430.txt TOTAL = 23 boards, Booted Boards = 22, No Boot boards = 1 please feel free to add my Tested-by: Nishanth Menon <nm@xxxxxx> -- Regards, Nishanth Menon -- 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>