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| author | Ard Biesheuvel <ardb@kernel.org> | 2024-04-23 10:25:41 +0300 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-04-29 16:14:15 +0300 |
| commit | 6b0ef2792c223636a86f2c9c3fcb26502a03d5a7 (patch) | |
| tree | 6cb3954b3a7b9dd5b6ad6b938167893004132653 /arch/arm/mm/Makefile | |
| parent | 4cece764965020c22cff7665b18a012006359095 (diff) | |
| download | linux-6b0ef2792c223636a86f2c9c3fcb26502a03d5a7.tar.xz | |
ARM: 9384/2: mm: Make tlbflush routines CFI safe
Instead of avoiding CFI entirely on the TLB flush helpers, reorganize
the code so that the CFI machinery can deal with it. The important
things to take into account are:
- functions in asm called indirectly from C need to be defined using
SYM_TYPED_FUNC_START()
- a reference to the asm function needs to be visible to the compiler,
in order to get it to emit the typeid symbol.
The latter means that defining the cpu_tlb_fns structs is best done from
C code, so that the references in the static initializers will be
visible to the compiler.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm/Makefile')
| -rw-r--r-- | arch/arm/mm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 71b858c9b10c..cc8255fdf56e 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_CPU_TLB_FEROCEON) += tlb-v4wbi.o # reuse v4wbi TLB functions obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o obj-$(CONFIG_CPU_TLB_V7) += tlb-v7.o obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.o +obj-y += tlb.o obj-$(CONFIG_CPU_ARM7TDMI) += proc-arm7tdmi.o obj-$(CONFIG_CPU_ARM720T) += proc-arm720.o |