On Tue, Aug 23, 2016 at 12:45 PM, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
> Commit 97f2645f358b ("tree-wide: replace config_enabled() with
> IS_ENABLED()") mostly killed config_enabled(), but some new users
> have appeared for v4.8-rc1. They are all used for a boolean option,
> so can be replaced with IS_ENABLED() safely.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
-Kees
> ---
>
> arch/mips/include/asm/page.h | 4 ++--
> arch/s390/kernel/setup.c | 6 ++----
> arch/x86/mm/kaslr.c | 2 +-
> 3 files changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
> index ea0cd97..5f98759 100644
> --- a/arch/mips/include/asm/page.h
> +++ b/arch/mips/include/asm/page.h
> @@ -164,7 +164,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
> */
> static inline unsigned long ___pa(unsigned long x)
> {
> - if (config_enabled(CONFIG_64BIT)) {
> + if (IS_ENABLED(CONFIG_64BIT)) {
> /*
> * For MIPS64 the virtual address may either be in one of
> * the compatibility segements ckseg0 or ckseg1, or it may
> @@ -173,7 +173,7 @@ static inline unsigned long ___pa(unsigned long x)
> return x < CKSEG0 ? XPHYSADDR(x) : CPHYSADDR(x);
> }
>
> - if (!config_enabled(CONFIG_EVA)) {
> + if (!IS_ENABLED(CONFIG_EVA)) {
> /*
> * We're using the standard MIPS32 legacy memory map, ie.
> * the address x is going to be in kseg0 or kseg1. We can
> diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
> index ba5f456..7f7ba5f2 100644
> --- a/arch/s390/kernel/setup.c
> +++ b/arch/s390/kernel/setup.c
> @@ -204,11 +204,9 @@ static void __init conmode_default(void)
> #endif
> }
> } else if (MACHINE_IS_KVM) {
> - if (sclp.has_vt220 &&
> - config_enabled(CONFIG_SCLP_VT220_CONSOLE))
> + if (sclp.has_vt220 && IS_ENABLED(CONFIG_SCLP_VT220_CONSOLE))
> SET_CONSOLE_VT220;
> - else if (sclp.has_linemode &&
> - config_enabled(CONFIG_SCLP_CONSOLE))
> + else if (sclp.has_linemode && IS_ENABLED(CONFIG_SCLP_CONSOLE))
> SET_CONSOLE_SCLP;
> else
> SET_CONSOLE_HVC;
> diff --git a/arch/x86/mm/kaslr.c b/arch/x86/mm/kaslr.c
> index ec8654f..bda8d5e 100644
> --- a/arch/x86/mm/kaslr.c
> +++ b/arch/x86/mm/kaslr.c
> @@ -77,7 +77,7 @@ static inline unsigned long get_padding(struct kaslr_memory_region *region)
> */
> static inline bool kaslr_memory_enabled(void)
> {
> - return kaslr_enabled() && !config_enabled(CONFIG_KASAN);
> + return kaslr_enabled() && !IS_ENABLED(CONFIG_KASAN);
> }
>
> /* Initialize base and padding for each memory region randomized with KASLR */
> --
> 1.9.1
>
--
Kees Cook
Nexus Security
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