linux/arch/arm
Dmitry Safonov 871402e05b mm: forbid splitting special mappings
Don't allow splitting of vm_special_mapping's.  It affects vdso/vvar
areas.  Uprobes have only one page in xol_area so they aren't affected.

Those restrictions were enforced by checks in .mremap() callbacks.
Restrict resizing with generic .split() callback.

Link: https://lkml.kernel.org/r/20201013013416.390574-7-dima@arista.com
Signed-off-by: Dmitry Safonov <dima@arista.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 12:13:41 -08:00
..
boot ARM: dts: mmp2-olpc-xo-1-75: clear the warnings when make dtbs 2020-12-09 23:00:14 +01:00
common ARM/sa1111: add a missing include of dma-map-ops.h 2020-10-20 09:40:33 +02:00
configs mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING 2020-12-06 10:19:07 -08:00
crypto crypto: arm/aes-neonbs - use typed init/exit routines for XTS 2020-09-25 17:48:15 +10:00
include asm-generic: add correct MAX_POSSIBLE_PHYSMEM_BITS setting 2020-11-27 15:00:35 -08:00
kernel mm: forbid splitting special mappings 2020-12-15 12:13:41 -08:00
lib arm: propagate the calling convention changes down to csum_partial_copy_from_user() 2020-08-20 15:45:16 -04:00
mach-actions
mach-alpine
mach-artpec
mach-asm9260
mach-aspeed
mach-at91 ARM: at91: pm: remove unnecessary at91sam9x60_idle 2020-08-17 11:18:59 +02:00
mach-axxia
mach-bcm ARM: bcm: Enable BCM7038_L1_IRQ for ARCH_BRCMSTB 2020-08-17 09:20:34 -07:00
mach-berlin
mach-clps711x
mach-cns3xxx
mach-davinci ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
mach-digicolor
mach-dove
mach-ebsa110
mach-efm32
mach-ep93xx treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mach-exynos Samsung mach/soc changes for v5.10 2020-09-26 12:55:43 -07:00
mach-footbridge
mach-gemini
mach-highbank dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
mach-hisi ARM: hisi: add support for SD5203 SoC 2020-09-30 09:56:03 +08:00
mach-imx ARM: imx: Use correct SRC base address 2020-12-01 08:09:01 +08:00
mach-integrator
mach-iop32x
mach-ixp4xx ARM/ixp4xx: add a missing include of dma-map-ops.h 2020-10-13 13:28:22 +02:00
mach-keystone ARM: keystone: remove SECTION_SIZE_BITS/MAX_PHYSMEM_BITS 2020-12-07 15:32:04 +01:00
mach-lpc18xx
mach-lpc32xx
mach-mediatek
mach-meson
mach-milbeaut
mach-mmp treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mach-moxart
mach-mstar ARM: mstar: Select MStar intc 2020-10-03 12:47:56 -07:00
mach-mv78xx0
mach-mvebu mvebu fixes for 5.9 (part 1) 2020-10-26 10:11:55 +01:00
mach-mxs
mach-nomadik
mach-npcm
mach-nspire
mach-omap1 usb: ohci-omap: Fix descriptor conversion 2020-12-04 16:03:52 +01:00
mach-omap2 Merge tag 'ti-sysc-fixes' into fixes 2020-11-16 11:18:56 +02:00
mach-orion5x treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mach-oxnas
mach-picoxcell
mach-prima2
mach-pxa power: supply: gpio-charger: Convert to GPIO descriptors 2020-08-27 16:47:14 +02:00
mach-qcom
mach-rda
mach-realtek
mach-realview
mach-rockchip
mach-rpc treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mach-s3c ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
mach-s5pv210 ARM: s5pv210: use private pm save/restore 2020-08-19 21:33:11 +02:00
mach-sa1100 power: supply: gpio-charger: Convert to GPIO descriptors 2020-08-27 16:47:14 +02:00
mach-shmobile ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
mach-socfpga
mach-spear
mach-sti
mach-stm32 ARM: stm32: Replace HTTP links with HTTPS ones 2020-10-03 12:38:54 -07:00
mach-sunxi ARM: sunxi: Add machine match for the Allwinner V3 SoC 2020-11-02 10:28:14 +01:00
mach-tango
mach-tegra treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mach-u300
mach-uniphier
mach-ux500
mach-versatile
mach-vexpress
mach-vt8500
mach-zx
mach-zynq
mm ARM, xtensa: highmem: avoid clobbering non-page aligned memory reservations 2020-11-04 10:42:57 +02:00
net
nwfpe
oprofile
plat-omap PM: AVS: smartreflex Move driver to soc specific drivers 2020-10-16 18:28:43 +02:00
plat-orion
plat-pxa
plat-versatile
probes ARM: 9019/1: kprobes: Avoid fortify_panic() when copying optprobe template 2020-10-27 12:11:51 +00:00
tools mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
vdso kbuild: explicitly specify the build id style 2020-10-09 23:57:30 +09:00
vfp
xen dma-mapping updates for 5.10 2020-10-15 14:43:29 -07:00
Kbuild
Kconfig kbuild: Hoist '--orphan-handling' into Kconfig 2020-12-01 22:45:36 +09:00
Kconfig-nommu
Kconfig.assembler
Kconfig.debug ARM: SoC platform updates 2020-10-24 10:33:08 -07:00
Makefile kbuild: Hoist '--orphan-handling' into Kconfig 2020-12-01 22:45:36 +09:00