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vdso: Introduce vdso/page.h

Browse Source 
The VDSO implementation includes headers from outside of the
vdso/ namespace.

Introduce vdso/page.h to make sure that the generic library
uses only the allowed namespace.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Link: https://lore.kernel.org/all/20241014151340.1639555-3-vincenzo.frascino@arm.com
This commit is contained in:
Vincenzo Frascino 2024-10-14 16:13:39 +01:00 committed by Thomas Gleixner
parent 8fd236b00f
commit efe8419ae7
23 changed files with 60 additions and 109 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/alpha/include/asm/page.h
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@ -4,11 +4,7 @@
#include <linux/const.h>
#include <asm/pal.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#ifndef __ASSEMBLY__

7
arch/arc/include/uapi/asm/page.h
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@ -14,7 +14,7 @@
/* PAGE_SHIFT determines the page size */
#ifdef __KERNEL__
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#include <vdso/page.h>
#else
/*
* Default 8k
@ -24,11 +24,10 @@
* not available
*/
#define PAGE_SHIFT 13
#define PAGE_SIZE _BITUL(PAGE_SHIFT) /* Default 8K */
#define PAGE_MASK (~(PAGE_SIZE-1))
#endif
#define PAGE_SIZE _BITUL(PAGE_SHIFT) /* Default 8K */
#define PAGE_OFFSET _AC(0x80000000, UL) /* Kernel starts at 2G onwrds */
#define PAGE_MASK (~(PAGE_SIZE-1))
#endif /* _UAPI__ASM_ARC_PAGE_H */

5
arch/arm/include/asm/page.h
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@ -7,10 +7,7 @@
#ifndef _ASMARM_PAGE_H
#define _ASMARM_PAGE_H
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
#include <vdso/page.h>
#ifndef __ASSEMBLY__

5
arch/arm64/include/asm/page-def.h
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@ -10,9 +10,6 @@
#include <linux/const.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#endif /* __ASM_PAGE_DEF_H */

8
arch/csky/include/asm/page.h
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@ -7,12 +7,8 @@
#include <asm/cache.h>
#include <linux/const.h>
/*
* PAGE_SHIFT determines the page size: 4KB
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#include <vdso/page.h>
#define THREAD_SIZE (PAGE_SIZE * 2)
#define THREAD_MASK (~(THREAD_SIZE - 1))
#define THREAD_SHIFT (PAGE_SHIFT + 1)

4
arch/hexagon/include/asm/page.h
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@ -45,9 +45,7 @@
#define HVM_HUGEPAGE_SIZE 0x5
#endif
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
#include <vdso/page.h>
#ifdef __KERNEL__
#ifndef __ASSEMBLY__

7
arch/loongarch/include/asm/page.h
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@ -8,12 +8,7 @@
#include <linux/const.h>
#include <asm/addrspace.h>
/*
* PAGE_SHIFT determines the page size
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#include <vdso/page.h>
#define HPAGE_SHIFT (PAGE_SHIFT + PAGE_SHIFT - 3)
#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)

6
arch/m68k/include/asm/page.h
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@ -6,10 +6,8 @@
#include <asm/setup.h>
#include <asm/page_offset.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define PAGE_OFFSET (PAGE_OFFSET_RAW)
#ifndef __ASSEMBLY__

5
arch/microblaze/include/asm/page.h
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@ -19,10 +19,7 @@
#ifdef __KERNEL__
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define LOAD_OFFSET ASM_CONST((CONFIG_KERNEL_START-CONFIG_KERNEL_BASE_ADDR))

7
arch/mips/include/asm/page.h
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@ -14,12 +14,7 @@
#include <linux/kernel.h>
#include <asm/mipsregs.h>
/*
* PAGE_SHIFT determines the page size
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
#include <vdso/page.h>
/*
* This is used for calculating the real page sizes

7
arch/nios2/include/asm/page.h
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@ -18,12 +18,7 @@
#include <linux/pfn.h>
#include <linux/const.h>
/*
* PAGE_SHIFT determines the page size
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#include <vdso/page.h>
/*
* PAGE_OFFSET -- the first address of the first page of memory.

11
arch/openrisc/include/asm/page.h
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@ -15,16 +15,7 @@
#ifndef __ASM_OPENRISC_PAGE_H
#define __ASM_OPENRISC_PAGE_H
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#ifdef __ASSEMBLY__
#define PAGE_SIZE (1 << PAGE_SHIFT)
#else
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#endif
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define PAGE_OFFSET 0xc0000000
#define KERNELBASE PAGE_OFFSET

4
arch/parisc/include/asm/page.h
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@ -4,9 +4,7 @@
#include <linux/const.h>
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA

10
arch/powerpc/include/asm/page.h
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@ -21,8 +21,7 @@
* page size. When using 64K pages however, whether we are really supporting
* 64K pages in HW or not is irrelevant to those definitions.
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
#include <vdso/page.h>
#ifndef __ASSEMBLY__
#ifndef CONFIG_HUGETLB_PAGE
@ -41,13 +40,6 @@ extern unsigned int hpage_shift;
#define HUGE_MAX_HSTATE (MMU_PAGE_COUNT-1)
#endif
/*
* Subtle: (1 << PAGE_SHIFT) is an int, not an unsigned long. So if we
* assign PAGE_MASK to a larger type it gets extended the way we want
* (i.e. with 1s in the high bits)
*/
#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1))
/*
* KERNELBASE is the virtual address of the start of the kernel, it's often
* the same as PAGE_OFFSET, but _might not be_.

4
arch/riscv/include/asm/page.h
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@ -12,9 +12,7 @@
#include <linux/pfn.h>
#include <linux/const.h>
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
#include <vdso/page.h>
#define HPAGE_SHIFT PMD_SHIFT
#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)

11
arch/s390/include/asm/page.h
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@ -11,14 +11,11 @@
#include <linux/const.h>
#include <asm/types.h>
#define _PAGE_SHIFT CONFIG_PAGE_SHIFT
#define _PAGE_SIZE (_AC(1, UL) << _PAGE_SHIFT)
#define _PAGE_MASK (~(_PAGE_SIZE - 1))
#include <vdso/page.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT _PAGE_SHIFT
#define PAGE_SIZE _PAGE_SIZE
#define PAGE_MASK _PAGE_MASK
#define _PAGE_SHIFT PAGE_SHIFT
#define _PAGE_SIZE PAGE_SIZE
#define _PAGE_MASK PAGE_MASK
#define PAGE_DEFAULT_ACC _AC(0, UL)
/* storage-protection override */
#define PAGE_SPO_ACC 9

6
arch/sh/include/asm/page.h
View File

@ -8,10 +8,8 @@
#include <linux/const.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define PTE_MASK PAGE_MASK
#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)

4
arch/sparc/include/asm/page_32.h
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@ -11,9 +11,7 @@
#include <linux/const.h>
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#ifndef __ASSEMBLY__

4
arch/sparc/include/asm/page_64.h
View File

@ -4,9 +4,7 @@
#include <linux/const.h>
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
/* Flushing for D-cache alias handling is only needed if
* the page size is smaller than 16K.

5
arch/um/include/asm/page.h
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@ -9,10 +9,7 @@
#include <linux/const.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#ifndef __ASSEMBLY__

5
arch/x86/include/asm/page_types.h
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@ -6,10 +6,7 @@
#include <linux/types.h>
#include <linux/mem_encrypt.h>
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)

8
arch/xtensa/include/asm/page.h
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@ -18,13 +18,7 @@
#include <asm/cache.h>
#include <asm/kmem_layout.h>
/*
* PAGE_SHIFT determines the page size
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (__XTENSA_UL_CONST(1) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#include <vdso/page.h>
#ifdef CONFIG_MMU
#define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR

30
include/vdso/page.h Normal file
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@ -0,0 +1,30 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __VDSO_PAGE_H
#define __VDSO_PAGE_H
#include <uapi/linux/const.h>
/*
* PAGE_SHIFT determines the page size.
*
* Note: This definition is required because PAGE_SHIFT is used
* in several places throuout the codebase.
*/
#define PAGE_SHIFT CONFIG_PAGE_SHIFT
#define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
#if defined(CONFIG_PHYS_ADDR_T_64BIT) && !defined(CONFIG_64BIT)
/*
* Applies only to 32-bit architectures with a 64-bit phys_addr_t.
*
* Subtle: (1 << CONFIG_PAGE_SHIFT) is an int, not an unsigned long.
* So if we assign PAGE_MASK to a larger type it gets extended the
* way we want (i.e. with 1s in the high bits)
*/
#define PAGE_MASK (~((1 << CONFIG_PAGE_SHIFT) - 1))
#else
#define PAGE_MASK (~(PAGE_SIZE - 1))
#endif
#endif /* __VDSO_PAGE_H */