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x86/entry: Remove debug IDT frobbing

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This is all unused now.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200529213321.245019500@infradead.org
This commit is contained in:
Peter Zijlstra
2020-05-29 23:27:37 +02:00
committed by Thomas Gleixner
parent 84b6a34915
commit f9912ada82
5 changed files with 1 additions and 108 deletions
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19
arch/x86/include/asm/debugreg.h
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@@ -94,25 +94,6 @@ extern void aout_dump_debugregs(struct user *dump);
extern void hw_breakpoint_restore(void);
#ifdef CONFIG_X86_64
DECLARE_PER_CPU(int, debug_stack_usage);
static inline void debug_stack_usage_inc(void)
{
__this_cpu_inc(debug_stack_usage);
}
static inline void debug_stack_usage_dec(void)
{
__this_cpu_dec(debug_stack_usage);
}
void debug_stack_set_zero(void);
void debug_stack_reset(void);
#else /* !X86_64 */
static inline void debug_stack_set_zero(void) { }
static inline void debug_stack_reset(void) { }
static inline void debug_stack_usage_inc(void) { }
static inline void debug_stack_usage_dec(void) { }
#endif /* X86_64 */
static __always_inline unsigned long local_db_save(void)
{
unsigned long dr7;