The patch titled
Subject: unicore32: remove __ARCH_USE_5LEVEL_HACK
has been added to the -mm tree. Its filename is
unicore32-remove-__arch_use_5level_hack.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/unicore32-remove-__arch_use_5level_hack.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/unicore32-remove-__arch_use_5level_hack.patch
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: unicore32: remove __ARCH_USE_5LEVEL_HACK
The unicore32 architecture has 2 level page tables and
asm-generic/pgtable-nopmd.h and explicit casts from pud_t to pgd_t for
page table folding.
Add p4d walk in the only place that actually unfolds the pud level and
remove __ARCH_USE_5LEVEL_HACK.
Link: http://lkml.kernel.org/r/20200227084608.18223-13-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Brian Cain <bcain@xxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxx>
Cc: James Morse <james.morse@xxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
Cc: Julien Thierry <julien.thierry.kdev@xxxxxxxxx>
Cc: Ley Foon Tan <ley.foon.tan@xxxxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Stafford Horne <shorne@xxxxxxxxx>
Cc: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>
Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/unicore32/include/asm/pgtable.h | 1 -
arch/unicore32/kernel/hibernate.c | 4 +++-
2 files changed, 3 insertions(+), 2 deletions(-)
--- a/arch/unicore32/include/asm/pgtable.h~unicore32-remove-__arch_use_5level_hack
+++ a/arch/unicore32/include/asm/pgtable.h
@@ -9,7 +9,6 @@
#ifndef __UNICORE_PGTABLE_H__
#define __UNICORE_PGTABLE_H__
-#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopmd.h>
#include <asm/cpu-single.h>
--- a/arch/unicore32/kernel/hibernate.c~unicore32-remove-__arch_use_5level_hack
+++ a/arch/unicore32/kernel/hibernate.c
@@ -33,9 +33,11 @@ struct swsusp_arch_regs swsusp_arch_regs
static pmd_t *resume_one_md_table_init(pgd_t *pgd)
{
pud_t *pud;
+ p4d_t *p4d;
pmd_t *pmd_table;
- pud = pud_offset(pgd, 0);
+ p4d = p4d_offset(pgd, 0);
+ pud = pud_offset(p4d, 0);
pmd_table = pmd_offset(pud, 0);
return pmd_table;
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
arm-arm64-add-support-for-folded-p4d-page-tables.patch
h8300-remove-usage-of-__arch_use_5level_hack.patch
hexagon-remove-__arch_use_5level_hack.patch
ia64-add-support-for-folded-p4d-page-tables.patch
nios2-add-support-for-folded-p4d-page-tables.patch
openrisc-add-support-for-folded-p4d-page-tables.patch
powerpc-add-support-for-folded-p4d-page-tables.patch
sh-drop-__pxd_offset-macros-that-duplicate-pxd_index-ones.patch
sh-add-support-for-folded-p4d-page-tables.patch
unicore32-remove-__arch_use_5level_hack.patch
asm-generic-remove-pgtable-nop4d-hackh.patch
mm-remove-__arch_has_5level_hack-and-include-asm-generic-5level-fixuph.patch
