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Subject[PATCH 4/6] arch: x86: Expose psABI on thread_info
Date
Expose psABI in thread_info, in preparation for the TIF_IA32 and
TIF_X32 flags removal.

Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
---
arch/x86/include/asm/thread_info.h | 2 ++
arch/x86/kernel/process_64.c | 3 +++
2 files changed, 5 insertions(+)

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 6d55a9c0dda2..698feefd5f5f 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -62,11 +62,13 @@ enum {
struct thread_info {
unsigned long flags; /* low level flags */
u32 status; /* thread synchronous flags */
+ short int psabi;
};

#define INIT_THREAD_INFO(tsk) \
{ \
.flags = 0, \
+ .psabi = 0, \
}

#else /* !__ASSEMBLY__ */
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index f20a365017b8..aea2c03e8a5d 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -532,6 +532,7 @@ void set_personality_64bit(void)
/* inherit personality from parent */

/* Make sure to be in 64bit mode */
+ current_thread_info()->psabi = PSABI_IA64;
clear_thread_flag(TIF_IA32);
clear_thread_flag(TIF_ADDR32);
clear_thread_flag(TIF_X32);
@@ -553,6 +554,7 @@ void set_personality_64bit(void)
static void __set_personality_x32(void)
{
#ifdef CONFIG_X86_X32
+ current_thread_info()->psabi = PSABI_X32;
clear_thread_flag(TIF_IA32);
set_thread_flag(TIF_X32);
if (current->mm)
@@ -574,6 +576,7 @@ static void __set_personality_x32(void)
static void __set_personality_ia32(void)
{
#ifdef CONFIG_IA32_EMULATION
+ current_thread_info()->psabi = PSABI_IA32;
set_thread_flag(TIF_IA32);
clear_thread_flag(TIF_X32);
if (current->mm)
--
2.27.0
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