linux-kernel - [PATCH RESEND 1/2] x86: Rename TIF_ADDR32 to TIF

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Date:   Tue, 21 Sep 2021 22:34:13 +0800
From:   sxwjean@...com
To:     x86@...nel.org, linux-mm@...ck.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        luto@...nel.org, krisman@...labora.com, chang.seok.bae@...el.com,
        viro@...iv.linux.org.uk, nivedita@...m.mit.edu,
        adobriyan@...il.com, oleg@...hat.com, sblbir@...zon.com,
        axboe@...nel.dk, laijs@...ux.alibaba.com,
        dave.hansen@...ux.intel.com, peterz@...radead.org,
        akpm@...ux-foundation.org, arnd@...db.de, davem@...emloft.net,
        keescook@...omium.org, kim.phillips@....com, yazen.ghannam@....com,
        dave@...olabs.net, metze@...ba.org, elver@...gle.com,
        ebiederm@...ssion.com, christophe.leroy@...roup.eu,
        linux-kernel@...r.kernel.org, Xiongwei Song <sxwjean@...il.com>
Subject: [PATCH RESEND 1/2] x86: Rename TIF_ADDR32 to TIF_32BIT

From: Xiongwei Song <sxwjean@...il.com>

In arm64 or powerpc or sparc, the 32 bits process in 64 bits kernel is set
flag TIF_32BIT. However in x86, that flag name is TIF_ADDR32. This patch
makes the flag name in x86 same as other archs.

Signed-off-by: Xiongwei Song <sxwjean@...il.com>
---
 arch/x86/include/asm/elf.h           | 2 +-
 arch/x86/include/asm/page_64_types.h | 6 +++---
 arch/x86/include/asm/thread_info.h   | 4 ++--
 arch/x86/kernel/process_64.c         | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 29fea180a665..aa6ae2bc20bd 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -322,7 +322,7 @@ static inline int mmap_is_ia32(void)
 {
 	return IS_ENABLED(CONFIG_X86_32) ||
 	       (IS_ENABLED(CONFIG_COMPAT) &&
-		test_thread_flag(TIF_ADDR32));
+		test_thread_flag(TIF_32BIT));
 }
 
 extern unsigned long task_size_32bit(void);
diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h
index a8d4ad856568..f4631bee9119 100644
--- a/arch/x86/include/asm/page_64_types.h
+++ b/arch/x86/include/asm/page_64_types.h
@@ -70,11 +70,11 @@
 #define IA32_PAGE_OFFSET	((current->personality & ADDR_LIMIT_3GB) ? \
 					0xc0000000 : 0xFFFFe000)
 
-#define TASK_SIZE_LOW		(test_thread_flag(TIF_ADDR32) ? \
+#define TASK_SIZE_LOW		(test_thread_flag(TIF_32BIT) ? \
 					IA32_PAGE_OFFSET : DEFAULT_MAP_WINDOW)
-#define TASK_SIZE		(test_thread_flag(TIF_ADDR32) ? \
+#define TASK_SIZE		(test_thread_flag(TIF_32BIT) ? \
 					IA32_PAGE_OFFSET : TASK_SIZE_MAX)
-#define TASK_SIZE_OF(child)	((test_tsk_thread_flag(child, TIF_ADDR32)) ? \
+#define TASK_SIZE_OF(child)	((test_tsk_thread_flag(child, TIF_32BIT)) ? \
 					IA32_PAGE_OFFSET : TASK_SIZE_MAX)
 
 #define STACK_TOP		TASK_SIZE_LOW
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index cf132663c219..9e768e7714cc 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -97,7 +97,7 @@ struct thread_info {
 #define TIF_FORCED_TF		24	/* true if TF in eflags artificially */
 #define TIF_BLOCKSTEP		25	/* set when we want DEBUGCTLMSR_BTF */
 #define TIF_LAZY_MMU_UPDATES	27	/* task is updating the mmu lazily */
-#define TIF_ADDR32		29	/* 32-bit address space on 64 bits */
+#define TIF_32BIT		29	/* 32-bit address space on 64 bits */
 
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
@@ -120,7 +120,7 @@ struct thread_info {
 #define _TIF_FORCED_TF		(1 << TIF_FORCED_TF)
 #define _TIF_BLOCKSTEP		(1 << TIF_BLOCKSTEP)
 #define _TIF_LAZY_MMU_UPDATES	(1 << TIF_LAZY_MMU_UPDATES)
-#define _TIF_ADDR32		(1 << TIF_ADDR32)
+#define _TIF_32BIT		(1 << TIF_32BIT)
 
 /* flags to check in __switch_to() */
 #define _TIF_WORK_CTXSW_BASE					\
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ec0d836a13b1..a8a94f87548f 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -666,7 +666,7 @@ void set_personality_64bit(void)
 	/* inherit personality from parent */
 
 	/* Make sure to be in 64bit mode */
-	clear_thread_flag(TIF_ADDR32);
+	clear_thread_flag(TIF_32BIT);
 	/* Pretend that this comes from a 64bit execve */
 	task_pt_regs(current)->orig_ax = __NR_execve;
 	current_thread_info()->status &= ~TS_COMPAT;
@@ -721,7 +721,7 @@ static void __set_personality_ia32(void)
 void set_personality_ia32(bool x32)
 {
 	/* Make sure to be in 32bit mode */
-	set_thread_flag(TIF_ADDR32);
+	set_thread_flag(TIF_32BIT);
 
 	if (x32)
 		__set_personality_x32();
-- 
2.30.2