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Subject[PATCH V3 2/7] x86/entry: Move PTI_USER_* to arch/x86/include/asm/processor-flags.h
Date
From: Lai Jiangshan <jiangshan.ljs@antgroup.com>

These constants will be also used in C file.

Move them to arch/x86/include/asm/processor-flags.h which already has
a kin X86_CR3_PTI_PCID_USER_BIT defined.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
---
arch/x86/entry/calling.h | 10 ----------
arch/x86/include/asm/processor-flags.h | 15 +++++++++++++++
2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h
index 29b36e9e4e74..331a44994cc0 100644
--- a/arch/x86/entry/calling.h
+++ b/arch/x86/entry/calling.h
@@ -142,16 +142,6 @@ For 32-bit we have the following conventions - kernel is built with

#ifdef CONFIG_PAGE_TABLE_ISOLATION

-/*
- * PAGE_TABLE_ISOLATION PGDs are 8k. Flip bit 12 to switch between the two
- * halves:
- */
-#define PTI_USER_PGTABLE_BIT PAGE_SHIFT
-#define PTI_USER_PGTABLE_MASK (1 << PTI_USER_PGTABLE_BIT)
-#define PTI_USER_PCID_BIT X86_CR3_PTI_PCID_USER_BIT
-#define PTI_USER_PCID_MASK (1 << PTI_USER_PCID_BIT)
-#define PTI_USER_PGTABLE_AND_PCID_MASK (PTI_USER_PCID_MASK | PTI_USER_PGTABLE_MASK)
-
.macro SET_NOFLUSH_BIT reg:req
bts $X86_CR3_PCID_NOFLUSH_BIT, \reg
.endm
diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h
index 02c2cbda4a74..4dd2fbbc861a 100644
--- a/arch/x86/include/asm/processor-flags.h
+++ b/arch/x86/include/asm/processor-flags.h
@@ -4,6 +4,7 @@

#include <uapi/asm/processor-flags.h>
#include <linux/mem_encrypt.h>
+#include <asm/page_types.h>

#ifdef CONFIG_VM86
#define X86_VM_MASK X86_EFLAGS_VM
@@ -50,7 +51,21 @@
#endif

#ifdef CONFIG_PAGE_TABLE_ISOLATION
+
# define X86_CR3_PTI_PCID_USER_BIT 11
+
+#ifdef CONFIG_X86_64
+/*
+ * PAGE_TABLE_ISOLATION PGDs are 8k. Flip bit 12 to switch between the two
+ * halves:
+ */
+#define PTI_USER_PGTABLE_BIT PAGE_SHIFT
+#define PTI_USER_PGTABLE_MASK (1 << PTI_USER_PGTABLE_BIT)
+#define PTI_USER_PCID_BIT X86_CR3_PTI_PCID_USER_BIT
+#define PTI_USER_PCID_MASK (1 << PTI_USER_PCID_BIT)
+#define PTI_USER_PGTABLE_AND_PCID_MASK (PTI_USER_PCID_MASK | PTI_USER_PGTABLE_MASK)
+#endif
+
#endif

#endif /* _ASM_X86_PROCESSOR_FLAGS_H */
--
2.19.1.6.gb485710b
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