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| author | Kees Cook <keescook@chromium.org> | 2018-01-03 10:43:32 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-05 15:44:26 +0100 |
| commit | bfd51a4d715b6ef44bd01b9fbfc13da936f93d76 (patch) | |
| tree | 3167572ea1ec7debb629a54963fe689bad586ce6 /arch/x86/mm | |
| parent | 3e1457d6bf26d9ec300781f84cd0057e44deb45d (diff) | |
| download | linux-stable-bfd51a4d715b6ef44bd01b9fbfc13da936f93d76.tar.gz linux-stable-bfd51a4d715b6ef44bd01b9fbfc13da936f93d76.tar.bz2 linux-stable-bfd51a4d715b6ef44bd01b9fbfc13da936f93d76.zip | |
KPTI: Report when enabled
Make sure dmesg reports when KPTI is enabled.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/kaiser.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/mm/kaiser.c b/arch/x86/mm/kaiser.c index d86d56f5e82e..bf6a915f60e7 100644 --- a/arch/x86/mm/kaiser.c +++ b/arch/x86/mm/kaiser.c @@ -11,6 +11,9 @@ #include <linux/uaccess.h> #include <linux/ftrace.h> +#undef pr_fmt +#define pr_fmt(fmt) "Kernel/User page tables isolation: " fmt + #include <asm/kaiser.h> #include <asm/tlbflush.h> /* to verify its kaiser declarations */ #include <asm/pgtable.h> @@ -293,7 +296,7 @@ enable: return; disable: - pr_info("Kernel/User page tables isolation: disabled\n"); + pr_info("disabled\n"); silent_disable: kaiser_enabled = 0; @@ -353,6 +356,8 @@ void __init kaiser_init(void) kaiser_add_user_map_early(&debug_idt_table, sizeof(gate_desc) * NR_VECTORS, __PAGE_KERNEL); + + pr_info("enabled\n"); } /* Add a mapping to the shadow mapping, and synchronize the mappings */ |