evie/android_kernel_oneplus_msm8998
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KPTI: Report when enabled

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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>
This commit is contained in:
Kees Cook 2018-01-03 10:43:32 -08:00 • committed by Greg Kroah-Hartman
parent 3e1457d6bf
commit bfd51a4d71
1 changed files with 6 additions and 1 deletions
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7
arch/x86/mm/kaiser.c
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@ -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 */