Messages in this thread Patch in this message | | | From | Lai Jiangshan <> | Subject | [PATCH V6 07/49] x86/entry: Move PTI_USER_* to arch/x86/include/asm/processor-flags.h | Date | Fri, 26 Nov 2021 18:11:27 +0800 |
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From: Lai Jiangshan <laijs@linux.alibaba.com>
These constants will be also used in C file, so we move them to arch/x86/include/asm/processor-flags.h which already has a kin X86_CR3_PTI_PCID_USER_BIT defined in it.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.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 a4c061fb7c6e..996b041e92d2 100644 --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -149,16 +149,6 @@ 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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