mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
![Arvind Sankar](/assets/img/avatar_default.png)
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
31 lines
803 B
C
31 lines
803 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_SPARSEMEM_H
|
|
#define _ASM_X86_SPARSEMEM_H
|
|
|
|
#ifdef CONFIG_SPARSEMEM
|
|
/*
|
|
* generic non-linear memory support:
|
|
*
|
|
* 1) we will not split memory into more chunks than will fit into the flags
|
|
* field of the struct page
|
|
*
|
|
* SECTION_SIZE_BITS 2^n: size of each section
|
|
* MAX_PHYSMEM_BITS 2^n: max size of physical address space
|
|
*
|
|
*/
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# ifdef CONFIG_X86_PAE
|
|
# define SECTION_SIZE_BITS 29
|
|
# define MAX_PHYSMEM_BITS 36
|
|
# else
|
|
# define SECTION_SIZE_BITS 26
|
|
# define MAX_PHYSMEM_BITS 32
|
|
# endif
|
|
#else /* CONFIG_X86_32 */
|
|
# define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
|
|
# define MAX_PHYSMEM_BITS (pgtable_l5_enabled() ? 52 : 46)
|
|
#endif
|
|
|
|
#endif /* CONFIG_SPARSEMEM */
|
|
#endif /* _ASM_X86_SPARSEMEM_H */
|