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x86/mm: Drop unused MAX_PHYSADDR_BITS

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The macro is not used anywhere, and has an incorrect value (going by the
comment) on x86_64 since commit c898faf91b ("x86: 46 bit physical address
support on 64 bits")

To avoid confusion, just remove the definition.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200723231544.17274-2-nivedita@alum.mit.edu
This commit is contained in:
Arvind Sankar 2020-07-23 19:15:42 -04:00 committed by Thomas Gleixner
parent 99e40204e0
commit 0a787b28b7
1 changed files with 1 additions and 5 deletions
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6
arch/x86/include/asm/sparsemem.h
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@ -10,24 +10,20 @@
* field of the struct page * field of the struct page
* *
* SECTION_SIZE_BITS 2^n: size of each section * SECTION_SIZE_BITS 2^n: size of each section
* MAX_PHYSADDR_BITS 2^n: max size of physical address space * MAX_PHYSMEM_BITS 2^n: max size of physical address space
* MAX_PHYSMEM_BITS 2^n: how much memory we can have in that space
* *
*/ */
#ifdef CONFIG_X86_32 #ifdef CONFIG_X86_32
# ifdef CONFIG_X86_PAE # ifdef CONFIG_X86_PAE
# define SECTION_SIZE_BITS 29 # define SECTION_SIZE_BITS 29
# define MAX_PHYSADDR_BITS 36
# define MAX_PHYSMEM_BITS 36 # define MAX_PHYSMEM_BITS 36
# else # else
# define SECTION_SIZE_BITS 26 # define SECTION_SIZE_BITS 26
# define MAX_PHYSADDR_BITS 32
# define MAX_PHYSMEM_BITS 32 # define MAX_PHYSMEM_BITS 32
# endif # endif
#else /* CONFIG_X86_32 */ #else /* CONFIG_X86_32 */
# define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */ # define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
# define MAX_PHYSADDR_BITS (pgtable_l5_enabled() ? 52 : 44)
# define MAX_PHYSMEM_BITS (pgtable_l5_enabled() ? 52 : 46) # define MAX_PHYSMEM_BITS (pgtable_l5_enabled() ? 52 : 46)
#endif #endif