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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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