FXSAVE_SIZE 19 arch/x86/include/asm/fpu/xstate.h #define XSAVE_HDR_OFFSET FXSAVE_SIZE FXSAVE_SIZE 367 arch/x86/kernel/fpu/xstate.c FXSAVE_SIZE + XSAVE_HDR_SIZE; FXSAVE_SIZE 576 arch/x86/kernel/fpu/xstate.c int paranoid_xstate_size = FXSAVE_SIZE + XSAVE_HDR_SIZE;