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9600 LDT still not happy under KPTI

*** 749,760 **** extern ulong_t getcr4(void); extern void setcr4(ulong_t); extern void mtrr_sync(void); ! extern void cpu_fast_syscall_enable(void *); ! extern void cpu_fast_syscall_disable(void *); struct cpu; extern int cpuid_checkpass(struct cpu *, int); extern uint32_t cpuid_insn(struct cpu *, struct cpuid_regs *); --- 749,760 ---- extern ulong_t getcr4(void); extern void setcr4(ulong_t); extern void mtrr_sync(void); ! extern void cpu_fast_syscall_enable(void); ! extern void cpu_fast_syscall_disable(void); struct cpu; extern int cpuid_checkpass(struct cpu *, int); extern uint32_t cpuid_insn(struct cpu *, struct cpuid_regs *);