x86/platform/uv: Remove UV BAU TLB Shootdown Handler

The Broadcast Assist Unit (BAU) TLB shootdown handler is being rewritten
to become the UV BAU APIC driver. It is designed to speed up sending
IPIs to selective CPUs within the system. Remove the current TLB
shutdown handler (tlb_uv.c) file and a couple of kernel hooks in the
interim.

Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Link: https://lkml.kernel.org/r/20201005203929.148656-2-mike.travis@hpe.com

arch/x86/include/asm/idtentry.h

@@ -591,10 +591,6 @@ DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR,		sysvec_call_function);
 #endif
 
 #ifdef CONFIG_X86_LOCAL_APIC
-# ifdef CONFIG_X86_UV
-DECLARE_IDTENTRY_SYSVEC(UV_BAU_MESSAGE,			sysvec_uv_bau_message);
-# endif
-
 # ifdef CONFIG_X86_MCE_THRESHOLD
 DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR,		sysvec_threshold);
 # endif

arch/x86/include/asm/uv/uv.h

@@ -35,10 +35,8 @@ extern int is_uv_hubbed(int uvtype);
 extern void uv_cpu_init(void);
 extern void uv_nmi_init(void);
 extern void uv_system_init(void);
-extern const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
-						 const struct flush_tlb_info *info);
 
-#else	/* X86_UV */
+#else	/* !X86_UV */
 
 static inline enum uv_system_type get_uv_system_type(void) { return UV_NONE; }
 static inline bool is_early_uv_system(void)	{ return 0; }