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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 12:32:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-08 12:32:00 -0700
commit9c6ee01ed5bb1ee489d580eaa60d7eb5a8ede336 (patch)
tree6c5286d05ab25310081470ef37fad2e576292679 /arch/arm/mm/proc-v7m.S
parentd9dc089583ebf28d6f02b995e2d71c85965660f9 (diff)
parentc92a90a5060a84e4a180af6b60aa0fb3a5e46c64 (diff)
downloadlinux-9c6ee01ed5bb1ee489d580eaa60d7eb5a8ede336.tar.bz2
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King: "Lots of little things this time: - allow modules to be autoloaded according to the HWCAP feature bits (used primarily for crypto modules) - split module core and init PLT sections, since the core code and init code could be placed far apart, and the PLT sections need to be local to the code block. - three patches from Chris Brandt to allow Cortex-A9 L2 cache optimisations to be disabled where a SoC didn't wire up the out of band signals. - NoMMU compliance fixes, avoiding corruption of vector table which is not being used at this point, and avoiding possible register state corruption when switching mode. - fixmap memory attribute compliance update. - remove unnecessary locking from update_sections_early() - ftrace fix for DEBUG_RODATA with !FRAME_POINTER" * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8672/1: mm: remove tasklist locking from update_sections_early() ARM: 8671/1: V7M: Preserve registers across switch from Thread to Handler mode ARM: 8670/1: V7M: Do not corrupt vector table around v7m_invalidate_l1 call ARM: 8668/1: ftrace: Fix dynamic ftrace with DEBUG_RODATA and !FRAME_POINTER ARM: 8667/3: Fix memory attribute inconsistencies when using fixmap ARM: 8663/1: wire up HWCAP/HWCAP2 feature bits to the CPU modalias ARM: 8666/1: mm: dump: Add domain to output ARM: 8662/1: module: split core and init PLT sections ARM: 8661/1: dts: r7s72100: add l2 cache ARM: 8660/1: shmobile: r7s72100: Enable L2 cache ARM: 8659/1: l2c: allow CA9 optimizations to be disabled
Diffstat (limited to 'arch/arm/mm/proc-v7m.S')
-rw-r--r--arch/arm/mm/proc-v7m.S6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mm/proc-v7m.S b/arch/arm/mm/proc-v7m.S
index 8dea61640cc1..47a5acc64433 100644
--- a/arch/arm/mm/proc-v7m.S
+++ b/arch/arm/mm/proc-v7m.S
@@ -135,9 +135,11 @@ __v7m_setup_cont:
dsb
mov r6, lr @ save LR
ldr sp, =init_thread_union + THREAD_START_SP
+ stmia sp, {r0-r3, r12}
cpsie i
svc #0
1: cpsid i
+ ldmia sp, {r0-r3, r12}
str r5, [r12, #11 * 4] @ restore the original SVC vector entry
mov lr, r6 @ restore LR
@@ -147,10 +149,10 @@ __v7m_setup_cont:
@ Configure caches (if implemented)
teq r8, #0
- stmneia r12, {r0-r6, lr} @ v7m_invalidate_l1 touches r0-r6
+ stmneia sp, {r0-r6, lr} @ v7m_invalidate_l1 touches r0-r6
blne v7m_invalidate_l1
teq r8, #0 @ re-evalutae condition
- ldmneia r12, {r0-r6, lr}
+ ldmneia sp, {r0-r6, lr}
@ Configure the System Control Register to ensure 8-byte stack alignment
@ Note the STKALIGN bit is either RW or RAO.