| Message ID | 1500177424-13695-38-git-send-email-linuxram@us.ibm.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
diff --git a/arch/x86/include/asm/pkeys.h b/arch/x86/include/asm/pkeys.h index b3b09b9..fa82799 100644 --- a/arch/x86/include/asm/pkeys.h +++ b/arch/x86/include/asm/pkeys.h @@ -5,6 +5,7 @@ extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val); +extern bool arch_pkeys_enabled(void); /* * Try to dedicate one of the protection keys to be used as an diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index c24ac1e..df594b8 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -918,6 +918,11 @@ int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, return 0; } + +bool arch_pkeys_enabled(void) +{ + return boot_cpu_has(X86_FEATURE_OSPKE); +} #endif /* ! CONFIG_ARCH_HAS_PKEYS */ /*
arch_pkeys_enabled() returns true if the cpu supports X86_FEATURE_OSPKE. Signed-off-by: Ram Pai <linuxram@us.ibm.com> --- arch/x86/include/asm/pkeys.h | 1 + arch/x86/kernel/fpu/xstate.c | 5 +++++ 2 files changed, 6 insertions(+), 0 deletions(-)