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Mike Rapoport e19f97ed67 um: add support for folded p4d page tables 
The UML port uses 4 and 5 level fixups to support higher level page
table directories in the generic VM code.

Implement primitives necessary for the 4th level folding, add walks of
p4d level where appropriate and drop usage of __ARCH_USE_5LEVEL_HACK.

Link: http://lkml.kernel.org/r/1572938135-31886-13-git-send-email-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Anatoly Pugachev <matorola@gmail.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Peter Rosin <peda@axentia.se>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Sam Creasey <sammy@sammy.net>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2019-12-04 19:44:15 -08:00
..
Kbuild um: Don't use generic barrier.h 2019-09-15 21:37:14 +02:00
asm-prototypes.h um: Restore symbol versions for __memcpy and memcpy 2018-02-19 19:38:51 +01:00
bugs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
common.lds.S vmlinux.lds.h: Replace RODATA with RO_DATA 2019-11-04 15:53:15 +01:00
dma.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fixmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hardirq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.h um: drivers: Add virtio vhost-user driver 2019-09-15 21:37:15 +02:00
irqflags.h um: Remove misleading #define ARCh_IRQ_ENABLED 2019-09-15 21:37:11 +02:00
kmap_types.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
kvm_para.h kvmclock: Add functions to check if the host has stopped the vm 2012-04-08 12:48:59 +03:00
mmu.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
mmu_context.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
page.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
pgalloc.h mm: treewide: clarify pgtable_page_{ctor,dtor}() naming 2019-09-26 10:10:44 -07:00
pgtable-2level.h um: add support for folded p4d page tables 2019-12-04 19:44:15 -08:00
pgtable-3level.h um: add support for folded p4d page tables 2019-12-04 19:44:15 -08:00
pgtable.h um: add support for folded p4d page tables 2019-12-04 19:44:15 -08:00
processor-generic.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
ptrace-generic.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
sections.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
setup.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stacktrace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall-generic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sysrq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
thread_info.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
timex.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlb.h um/tlb: Convert to generic mmu_gather 2019-04-03 10:32:52 +02:00
tlbflush.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
uaccess.h um: Add SPDX headers for files in arch/um/include 2019-09-15 21:37:17 +02:00
unwind.h x86/unwind: Add the ORC unwinder 2017-07-26 13:18:20 +02:00
vmlinux.lds.h Construct init thread stack in the linker script rather than by union 2018-01-09 23:21:02 +00:00