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ANDROID: 16K: Introduce __MAX_PAGE_SIZE macros

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For some cases, such as the vDSO layout, the page alignment needs
to be know at build time.

Introduce __MAX_PAGE_SIZE and friends for use in such scenarios.

Bug: 383389337
Bug: 356729201
Change-Id: I216568384efb147c868278318718703099e12e1c
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
This commit is contained in:
Kalesh Singh
2024-07-31 20:45:07 -07:00
committed by Carlos Llamas
parent 60b3135822
commit c64a15a595
1 changed files with 8 additions and 0 deletions
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8
include/linux/page_size_compat.h
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@@ -22,6 +22,12 @@
#include <asm/page.h>
#define __MAX_PAGE_SHIFT 14
#define __MAX_PAGE_SIZE (_AC(1,UL) << __MAX_PAGE_SHIFT)
#define __MAX_PAGE_MASK (~(__MAX_PAGE_SIZE-1))
#ifndef __ASSEMBLY__
#include <linux/align.h>
#include <linux/jump_label.h>
#include <linux/mman.h>
@@ -143,4 +149,6 @@ static __always_inline void __filemap_fixup(unsigned long addr, unsigned long pr
___filemap_fixup(addr, prot, old_len, new_len);
}
#endif /* !__ASSEMBLY__ */
#endif /* __LINUX_PAGE_SIZE_COMPAT_H */