Commit 013fdeb0 authored by Borislav Petkov (AMD)'s avatar Borislav Petkov (AMD)
Browse files

x86/mm: Remove unused current_untag_mask() 



e0bddc19 ("x86/mm: Reduce untagged_addr() overhead for systems without LAM")

removed its only usage site so drop it.

Move the tlbstate_untag_mask up in the header and drop the ugly
ifdeffery as the unused declaration should be properly discarded.

Signed-off-by: default avatarBorislav Petkov (AMD) <bp@alien8.de>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: https://lore.kernel.org/r/20230614174148.5439-1-bp@alien8.de
parent 7e980867

arch/x86/include/asm/tlbflush.h

+2 −9
Original line number Diff line number Diff line
@@ -14,6 +14,8 @@ 
#include <asm/processor-flags.h>

#include <asm/pgtable.h>



DECLARE_PER_CPU(u64, tlbstate_untag_mask);



void __flush_tlb_all(void);



#define TLB_FLUSH_ALL	-1UL
@@ -54,15 +56,6 @@ static inline void cr4_clear_bits(unsigned long mask) 
	local_irq_restore(flags);

}



#ifdef CONFIG_ADDRESS_MASKING

DECLARE_PER_CPU(u64, tlbstate_untag_mask);



static inline u64 current_untag_mask(void)

{

	return this_cpu_read(tlbstate_untag_mask);

}

#endif



#ifndef MODULE

/*

 * 6 because 6 should be plenty and struct tlb_state will fit in two cache