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authorKees Cook <keescook@chromium.org>2018-01-03 10:17:35 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-01-05 15:46:35 +0100
commite71fac01727a9495f08de9db5259089bee311766 (patch)
tree1bb91de3735ca19ab82ba9be2a8ee2bce0488fff /arch/x86/include
parent59094faf3f618b2d2b2a45acb916437d611cede6 (diff)
KPTI: Rename to PAGE_TABLE_ISOLATION
This renames CONFIG_KAISER to CONFIG_PAGE_TABLE_ISOLATION. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/cpufeatures.h2
-rw-r--r--arch/x86/include/asm/kaiser.h12
-rw-r--r--arch/x86/include/asm/pgtable.h4
-rw-r--r--arch/x86/include/asm/pgtable_64.h4
-rw-r--r--arch/x86/include/asm/pgtable_types.h2
-rw-r--r--arch/x86/include/asm/tlbflush.h2
6 files changed, 13 insertions, 13 deletions
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 20271d6b0eb9..454a37adb823 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -199,7 +199,7 @@
#define X86_FEATURE_AVX512_4FMAPS (7*32+17) /* AVX-512 Multiply Accumulation Single precision */
/* Because the ALTERNATIVE scheme is for members of the X86_FEATURE club... */
-#define X86_FEATURE_KAISER ( 7*32+31) /* CONFIG_KAISER w/o nokaiser */
+#define X86_FEATURE_KAISER ( 7*32+31) /* CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */
/* Virtualization flags: Linux defined, word 8 */
#define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/include/asm/kaiser.h b/arch/x86/include/asm/kaiser.h
index b5e46aa683f4..802bbbdfe143 100644
--- a/arch/x86/include/asm/kaiser.h
+++ b/arch/x86/include/asm/kaiser.h
@@ -20,7 +20,7 @@
#define KAISER_SHADOW_PGD_OFFSET 0x1000
#ifdef __ASSEMBLY__
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
.macro _SWITCH_TO_KERNEL_CR3 reg
movq %cr3, \reg
@@ -69,7 +69,7 @@ movq PER_CPU_VAR(unsafe_stack_register_backup), %rax
8:
.endm
-#else /* CONFIG_KAISER */
+#else /* CONFIG_PAGE_TABLE_ISOLATION */
.macro SWITCH_KERNEL_CR3
.endm
@@ -78,11 +78,11 @@ movq PER_CPU_VAR(unsafe_stack_register_backup), %rax
.macro SWITCH_KERNEL_CR3_NO_STACK
.endm
-#endif /* CONFIG_KAISER */
+#endif /* CONFIG_PAGE_TABLE_ISOLATION */
#else /* __ASSEMBLY__ */
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
/*
* Upon kernel/user mode switch, it may happen that the address
* space has to be switched before the registers have been
@@ -100,10 +100,10 @@ extern void __init kaiser_check_boottime_disable(void);
#else
#define kaiser_enabled 0
static inline void __init kaiser_check_boottime_disable(void) {}
-#endif /* CONFIG_KAISER */
+#endif /* CONFIG_PAGE_TABLE_ISOLATION */
/*
- * Kaiser function prototypes are needed even when CONFIG_KAISER is not set,
+ * Kaiser function prototypes are needed even when CONFIG_PAGE_TABLE_ISOLATION is not set,
* so as to build with tests on kaiser_enabled instead of #ifdefs.
*/
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 217e83a657e2..2536f90cd30c 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -18,7 +18,7 @@
#ifndef __ASSEMBLY__
#include <asm/x86_init.h>
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
extern int kaiser_enabled;
#else
#define kaiser_enabled 0
@@ -920,7 +920,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
{
memcpy(dst, src, count * sizeof(pgd_t));
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
if (kaiser_enabled) {
/* Clone the shadow pgd part as well */
memcpy(native_get_shadow_pgd(dst),
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index cf68b5c1cb74..ce97c8c6a310 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -106,7 +106,7 @@ static inline void native_pud_clear(pud_t *pud)
native_set_pud(pud, native_make_pud(0));
}
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
extern pgd_t kaiser_set_shadow_pgd(pgd_t *pgdp, pgd_t pgd);
static inline pgd_t *native_get_shadow_pgd(pgd_t *pgdp)
@@ -127,7 +127,7 @@ static inline pgd_t *native_get_shadow_pgd(pgd_t *pgdp)
BUILD_BUG_ON(1);
return NULL;
}
-#endif /* CONFIG_KAISER */
+#endif /* CONFIG_PAGE_TABLE_ISOLATION */
static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
{
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index f0d9a1aa3f68..f1c8ac468292 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -144,7 +144,7 @@
#define X86_CR3_PCID_MASK (X86_CR3_PCID_NOFLUSH | X86_CR3_PCID_ASID_MASK)
#define X86_CR3_PCID_ASID_KERN (_AC(0x0,UL))
-#if defined(CONFIG_KAISER) && defined(CONFIG_X86_64)
+#if defined(CONFIG_PAGE_TABLE_ISOLATION) && defined(CONFIG_X86_64)
/* Let X86_CR3_PCID_ASID_USER be usable for the X86_CR3_PCID_NOFLUSH bit */
#define X86_CR3_PCID_ASID_USER (_AC(0x80,UL))
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 5b423d5db40a..94146f665a3c 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -136,7 +136,7 @@ static inline void cr4_set_bits_and_update_boot(unsigned long mask)
* Declare a couple of kaiser interfaces here for convenience,
* to avoid the need for asm/kaiser.h in unexpected places.
*/
-#ifdef CONFIG_KAISER
+#ifdef CONFIG_PAGE_TABLE_ISOLATION
extern int kaiser_enabled;
extern void kaiser_setup_pcid(void);
extern void kaiser_flush_tlb_on_return_to_user(void);