leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
5203f4995d
linux/arch/powerpc/lib
History
Balbir Singh 37bc3e5fd7 powerpc/lib/code-patching: Use alternate map for patch_instruction() 
This patch creates the window using text_poke_area, allocated via
get_vm_area(). text_poke_area is per CPU to avoid locking.
text_poke_area for each cpu is setup using late_initcall, prior to
setup of these alternate mapping areas, we continue to use direct
write to change/modify kernel text. With the ability to use alternate
mappings to write to kernel text, it provides us the freedom to then
turn text read-only and implement CONFIG_STRICT_KERNEL_RWX.

This code is CPU hotplug aware to ensure that the we have mappings for
any new cpus as they come online and tear down mappings for any CPUs
that go offline.

Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-07-03 23:12:19 +10:00
..
alloc.c treewide: replace obsolete _refok by __ref 2016-08-02 17:31:41 -04:00
checksum_32.S powerpc: EX_TABLE macro for exception tables 2016-11-14 11:11:51 +11:00
checksum_64.S powerpc/64: Use optimized checksum routines on little-endian 2017-01-25 13:34:18 +11:00
checksum_wrappers.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
code-patching.c powerpc/lib/code-patching: Use alternate map for patch_instruction() 2017-07-03 23:12:19 +10:00
copy_32.S powerpc: get rid of zeroing, switch to RAW_COPY_USER 2017-04-06 15:08:42 -04:00
copypage_64.S powerpc/64: Fix naming of cache block vs. cache line 2017-02-06 19:46:04 +11:00
copypage_power7.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
copyuser_64.S powerpc: get rid of zeroing, switch to RAW_COPY_USER 2017-04-06 15:08:42 -04:00
copyuser_power7.S powerpc: Tweak copy selection parameter in __copy_tofrom_user_power7() 2017-05-30 14:59:51 +10:00
crtsavres.S powerpc/64: Do not create new section for save/restore functions 2017-05-30 14:59:51 +10:00
div64.S
feature-fixups-test.S powerpc: Ensure the else case of feature sections will fit 2011-01-21 14:08:33 +11:00
feature-fixups.c sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
hweight_64.S ppc: move exports to definitions 2016-08-07 23:50:09 -04:00
ldstfp.S powerpc: EX_TABLE macro for exception tables 2016-11-14 11:11:51 +11:00
locks.c powerpc/spinlock: Fix spin_unlock_wait() 2016-06-14 16:05:44 +10:00
Makefile powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00
mem_64.S Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
memcmp_64.S ppc: move exports to definitions 2016-08-07 23:50:09 -04:00
memcpy_64.S ppc: move exports to definitions 2016-08-07 23:50:09 -04:00
memcpy_power7.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
rheap.c powerpc: Various typo fixes 2016-06-14 13:58:26 +10:00
sstep.c powerpc/kprobes: Convert __kprobes to NOKPROBE_SYMBOL() 2017-04-23 20:32:25 +10:00
string_64.S powerpc/64: Fix naming of cache block vs. cache line 2017-02-06 19:46:04 +11:00
string.S powerpc: EX_TABLE macro for exception tables 2016-11-14 11:11:51 +11:00
test_emulate_step.c powerpc: emulate_step() tests for load/store instructions 2017-03-03 11:24:50 +11:00
vmx-helper.c powerpc: Introduce asm-prototypes.h 2016-06-16 22:39:54 +10:00
xor_vmx_glue.c powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00
xor_vmx.c powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00
xor_vmx.h powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00