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Michael Ellerman 5b48ba2fbd powerpc/64s: Fix stf mitigation patching w/strict RWX & hash 
The stf entry barrier fallback is unsafe to execute in a semi-patched
state, which can happen when enabling/disabling the mitigation with
strict kernel RWX enabled and using the hash MMU.

See the previous commit for more details.

Fix it by changing the order in which we patch the instructions.

Note the stf barrier fallback is only used on Power6 or earlier.

Fixes: bd573a81312f ("powerpc/mm/64s: Allow STRICT_KERNEL_RWX again")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210513140800.1391706-2-mpe@ellerman.id.au
2021-05-14 17:27:37 +10:00
..
alloc.c
treewide: add checks for the return value of memblock_alloc*()
2019-03-12 10:04:02 -07:00
checksum_32.S
powerpc32: don't adjust unmoved stack pointer in csum_partial_copy_generic() epilogue
2020-10-14 16:04:13 -07:00
checksum_64.S
ppc: propagate the calling conventions change down to csum_partial_copy_generic()
2020-08-20 15:45:22 -04:00
checksum_wrappers.c
powerpc/net: Switch csum_and_copy_{to/from}_user to user_access block
2021-03-26 23:19:43 +11:00
code-patching.c
powerpc/inst: ppc_inst_as_u64() becomes ppc_inst_as_ulong()
2021-04-21 22:52:32 +10:00
copy_32.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
copy_mc_64.S
x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()
2020-10-06 11:18:04 +02:00
copypage_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
copypage_power7.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
copyuser_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
copyuser_power7.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
crtsavres.S
powerpc/64: Do not create new section for save/restore functions
2017-05-30 14:59:51 +10:00
div64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
error-inject.c
powerpc: Add support for function error injection
2018-10-20 13:26:43 +11:00
feature-fixups-test.S
powerpc: Test prefixed instructions in feature fixups
2020-05-19 00:11:02 +10:00
feature-fixups.c
powerpc/64s: Fix stf mitigation patching w/strict RWX & hash
2021-05-14 17:27:37 +10:00
hweight_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
ldstfp.S
powerpc updates for 5.3
2019-07-13 16:08:36 -07:00
locks.c
powerpc/pseries: Move some PAPR paravirt functions to their own file
2020-07-26 23:34:26 +10:00
Makefile
powerpc/32: Fix boot failure with CONFIG_STACKPROTECTOR
2021-05-04 22:28:05 +10:00
mem_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
memcmp_32.S
powerpc/lib: optimise PPC32 memcmp
2018-06-04 00:39:21 +10:00
memcmp_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
memcpy_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
memcpy_power7.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
pmem.c
powerpc/pmem: Include pmem prototypes
2021-01-30 11:39:28 +11:00
quad.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rheap.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
sstep.c
powerpc: remove partial register save logic
2021-04-14 23:04:44 +10:00
string_32.S
powerpc: Fix __clear_user() with KUAP enabled
2019-12-16 23:19:44 +11:00
string_64.S
powerpc: Fix __clear_user() with KUAP enabled
2019-12-16 23:19:44 +11:00
string.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
strlen_32.S
powerpc/lib: Implement strlen() in assembly for PPC32
2018-08-07 21:49:30 +10:00
test_code-patching.S
powerpc: Test prefixed code patching
2020-05-19 00:11:02 +10:00
test_emulate_step_exec_instr.S
powerpc/sstep: Add tests for Prefixed Add Immediate
2020-07-23 17:25:21 +10:00
test_emulate_step.c
powerpc/sstep: Add testcases for VSX vector paired load/store instructions
2020-12-11 00:09:10 +11:00
vmx-helper.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
xor_vmx_glue.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
xor_vmx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
xor_vmx.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00