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linux/arch/arm/mm
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Vladimir Murzin d8945878de ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 
[ Upstream commit 72cd4064fc ]

ARMv8M introduces support for Security extension to M class, among
other things it affects exception handling, especially, encoding of
EXC_RETURN.

The new bits have been added:

Bit [6]	Secure or Non-secure stack
Bit [5]	Default callee register stacking
Bit [0]	Exception Secure

which conflicts with hard-coded value of EXC_RETURN:

In fact, we only care of few bits:

Bit [3]	 Mode (0 - Handler, 1 - Thread)
Bit [2]	 Stack pointer selection (0 - Main, 1 - Process)

We can toggle only those bits and left other bits as they were on
exception entry.

It is basically, what patch does - saves EXC_RETURN when we do
transition form Thread to Handler mode (it is first svc), so later
saved value is used instead of EXC_RET_THREADMODE_PROCESSSTACK.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-04-05 22:33:12 +02:00
..
abort-ev4.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev4t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev5t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev5tj.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev6.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-ev7.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-lv4t.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-macro.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
abort-nommu.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
alignment.c
signal: Ensure every siginfo we send has all bits initialized
2018-04-25 10:40:51 -05:00
cache-aurora-l2.h
ARM: 7547/4: cache-l2x0: add support for Aurora L2 cache ctrl
2012-11-06 19:47:35 +00:00
cache-b15-rac.c
ARM: B15: Update to support Brahma-B53
2018-04-16 15:16:48 -07:00
cache-fa.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
cache-feroceon-l2.c
ARM: 8416/1: Feroceon: use of_iomap() to map register base
2015-08-18 14:00:30 +01:00
cache-l2x0-pmu.c
perf: Fix sibling iteration
2018-03-16 20:44:12 +01:00
cache-l2x0.c
ARM: 8659/1: l2c: allow CA9 optimizations to be disabled
2017-03-17 10:01:26 +00:00
cache-nop.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
cache-tauros2.c
ARM: l2c: tauros2: use descriptive definitions for register bits
2015-11-26 22:12:26 +00:00
cache-tauros3.h
ARM: 7922/1: l2x0: add Marvell Tauros3 support
2013-12-29 12:32:47 +00:00
cache-uniphier.c
ARM: 8652/1: cache-uniphier: clean up active way setup code
2017-02-28 11:06:17 +00:00
cache-v4.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
cache-v4wb.S
ARM: align .data section
2017-08-14 16:22:55 +01:00
cache-v4wt.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
cache-v6.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
cache-v7.S
ARM: 8814/1: mm: improve/fix ARM v7_dma_inv_range() unaligned address handling
2018-12-21 14:15:21 +01:00
cache-v7m.S
ARM: 8815/1: V7M: align v7m_dma_inv_range() with v7 counterpart
2018-12-21 14:15:21 +01:00
cache-xsc3l2.c
ARM: move CP15 definitions to separate header file
2012-03-28 18:30:01 +01:00
context.c
ARM: 8465/1: mm: keep reserved ASIDs in sync with mm after multiple rollovers
2015-12-02 23:57:54 +00:00
copypage-fa.c
…
copypage-feroceon.c
…
copypage-v4mc.c
mm: fix races between swapoff and flush dcache
2018-04-05 21:36:26 -07:00
copypage-v4wb.c
…
copypage-v4wt.c
…
copypage-v6.c
mm: fix races between swapoff and flush dcache
2018-04-05 21:36:26 -07:00
copypage-xsc3.c
…
copypage-xscale.c
mm: fix races between swapoff and flush dcache
2018-04-05 21:36:26 -07:00
dma-mapping-nommu.c
dma-debug: move initialization to common code
2018-05-08 13:02:42 +02:00
dma-mapping.c
ARM: 8835/1: dma-mapping: Clear DMA ops on teardown
2019-03-23 20:09:48 +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
dump.c
ARM: 8737/1: mm: dump: add checking for writable and executable
2018-01-21 15:32:20 +00:00
extable.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fault-armv.c
mm: fix races between swapoff and flush dcache
2018-04-05 21:36:26 -07:00
fault.c
mm: convert return type of handle_mm_fault() caller to vm_fault_t
2018-08-17 16:20:28 -07:00
fault.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
flush.c
mm: fix races between swapoff and flush dcache
2018-04-05 21:36:26 -07:00
fsr-2level.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fsr-3level.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
highmem.c
kmap_atomic_to_page() has no users, remove it
2015-11-09 15:11:24 -08:00
hugetlbpage.c
mm/hugetlb: reduce arch dependent code about huge_pmd_unshare
2015-06-24 17:49:41 -07:00
idmap.c
ARM: 8734/1: mm: idmap: Mark variables as ro_after_init
2017-12-17 22:16:20 +00:00
init.c
ARM: 8780/1: ftrace: Only set kernel memory back to read-only after boot
2018-07-11 22:57:57 +01:00
iomap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioremap.c
ARM: 8799/1: mm: fix pci_ioremap_io() offset check
2018-09-19 10:44:14 +01:00
Kconfig
ARM: 8784/1: NOMMU: Allow enter in Hyp mode
2018-07-30 11:45:52 +01:00
l2c-common.c
ARM: outer cache: add WARN_ON() to outer_disable()
2014-05-30 00:47:23 +01:00
l2c-l2x0-resume.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile
Merge branches 'fixes', 'misc' and 'spectre' into for-linus
2018-06-05 10:03:27 +01:00
mm.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mmap.c
exec: pass stack rlimit into mm layout functions
2018-04-11 10:28:37 -07:00
mmu.c
ARM: 8685/1: ensure memblock-limit is pmd-aligned
2017-06-29 23:10:12 +01:00
nommu.c
ARM: 8783/1: NOMMU: Extend check for VBAR support
2018-07-30 11:45:51 +01:00
pabort-legacy.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pabort-v6.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pabort-v7.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pageattr.c
arm: use set_memory.h header
2017-05-08 17:15:13 -07:00
pgd.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
physaddr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pmsa-v7.c
ARM: 8754/1: NOMMU: Move PMSAv7 MPU under it's own namespace
2018-05-19 11:53:46 +01:00
pmsa-v8.c
ARM: 8757/1: NOMMU: Support PMSAv8 MPU
2018-05-19 11:53:46 +01:00
proc-arm7tdmi.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm9tdmi.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm720.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm740.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm920.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm922.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm925.S
ARM: 8349/1: arch/arm/mm/proc-arm925.S: remove dead #ifdef block
2015-05-03 23:22:27 +01:00
proc-arm926.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm940.S
Merge branches 'misc', 'vdso' and 'fixes' into for-next
2015-04-14 22:28:25 +01:00
proc-arm946.S
Merge branches 'misc', 'vdso' and 'fixes' into for-next
2015-04-14 22:28:25 +01:00
proc-arm1020.S
ARM: 8348/1: remove comments on CPU_ARM1020_CPU_IDLE
2015-05-03 23:22:09 +01:00
proc-arm1020e.S
ARM: 8348/1: remove comments on CPU_ARM1020_CPU_IDLE
2015-05-03 23:22:09 +01:00
proc-arm1022.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-arm1026.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-fa526.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-feroceon.S
ARM: 8350/1: proc-feroceon: Fix feroceon_proc_info macro
2015-05-03 23:23:09 +01:00
proc-macros.S
ARM: fix the cockup in the previous patch
2019-02-20 10:25:38 +01:00
proc-mohawk.S
ARM: mohawk: allow building with MMU disabled
2015-12-01 21:44:25 +01:00
proc-sa110.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-sa1100.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-syms.c
ARM: modules: don't export cpu_set_pte_ext when !MMU
2013-03-26 09:55:34 +00:00
proc-v6.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-v7-2level.S
ARM: spectre-v2: harden branch predictor on context switches
2018-05-31 10:39:55 +01:00
proc-v7-3level.S
ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup
2017-08-29 13:09:12 +01:00
proc-v7-bugs.c
ARM: spectre-v2: per-CPU vtables to work around big.Little systems
2019-02-20 10:25:38 +01:00
proc-v7.S
ARM: 8809/1: proc-v7: fix Thumb annotation of cpu_v7_hvc_switch_mm
2018-11-21 09:19:18 +01:00
proc-v7m.S
ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of
2019-04-05 22:33:12 +02:00
proc-xsc3.S
ARM: 8314/1: replace PROCINFO embedded branch with relative offset
2015-03-28 15:46:14 +00:00
proc-xscale.S
ARM: align .data section
2017-08-14 16:22:55 +01:00
ptdump_debugfs.c
ARM: 8735/1: mm: dump: make page table dumping reusable
2018-01-21 15:32:17 +00:00
pv-fixup-asm.S
ARM: re-implement physical address space switching
2015-06-01 23:46:33 +01:00
tcm.h
ARM: tcm: ensure inline stub functions are marked static
2018-07-14 16:09:27 +01:00
tlb-fa.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
tlb-v4.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
tlb-v4wb.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
tlb-v4wbi.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
tlb-v6.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
tlb-v7.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00