[RESEND PATCH V5 3/8] x86/fsgsbase/64: Make ptrace use FS/GS base helpers

The FS/GS base helper functions are used on ptrace APIs (PTRACE_ARCH_PRCTL, PTRACE_SETREG, PTRACE_GETREG, etc). The FS/GS-update mechanism is now a bit organized. Based-on-code-from: Andy Lutomirski Signed-off-by: Chang S. Bae Cc: H. Peter Anvin Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Dave

[RESEND PATCH V5 3/8] x86/fsgsbase/64: Make ptrace use FS/GS base helpers

The FS/GS base helper functions are used on ptrace APIs (PTRACE_ARCH_PRCTL, PTRACE_SETREG, PTRACE_GETREG, etc). The FS/GS-update mechanism is now a bit organized. Based-on-code-from: Andy Lutomirski Signed-off-by: Chang S. Bae Cc: H. Peter Anvin Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Dave