forked from Minki/linux
589ee62844
Update code that relied on sched.h including various MM types for them. This will allow us to remove the <linux/mm_types.h> include from <linux/sched.h>. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
#ifndef _ASM_X86_MPX_H
|
|
#define _ASM_X86_MPX_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/mm_types.h>
|
|
|
|
#include <asm/ptrace.h>
|
|
#include <asm/insn.h>
|
|
|
|
/*
|
|
* NULL is theoretically a valid place to put the bounds
|
|
* directory, so point this at an invalid address.
|
|
*/
|
|
#define MPX_INVALID_BOUNDS_DIR ((void __user *)-1)
|
|
#define MPX_BNDCFG_ENABLE_FLAG 0x1
|
|
#define MPX_BD_ENTRY_VALID_FLAG 0x1
|
|
|
|
/*
|
|
* The upper 28 bits [47:20] of the virtual address in 64-bit
|
|
* are used to index into bounds directory (BD).
|
|
*
|
|
* The directory is 2G (2^31) in size, and with 8-byte entries
|
|
* it has 2^28 entries.
|
|
*/
|
|
#define MPX_BD_SIZE_BYTES_64 (1UL<<31)
|
|
#define MPX_BD_ENTRY_BYTES_64 8
|
|
#define MPX_BD_NR_ENTRIES_64 (MPX_BD_SIZE_BYTES_64/MPX_BD_ENTRY_BYTES_64)
|
|
|
|
/*
|
|
* The 32-bit directory is 4MB (2^22) in size, and with 4-byte
|
|
* entries it has 2^20 entries.
|
|
*/
|
|
#define MPX_BD_SIZE_BYTES_32 (1UL<<22)
|
|
#define MPX_BD_ENTRY_BYTES_32 4
|
|
#define MPX_BD_NR_ENTRIES_32 (MPX_BD_SIZE_BYTES_32/MPX_BD_ENTRY_BYTES_32)
|
|
|
|
/*
|
|
* A 64-bit table is 4MB total in size, and an entry is
|
|
* 4 64-bit pointers in size.
|
|
*/
|
|
#define MPX_BT_SIZE_BYTES_64 (1UL<<22)
|
|
#define MPX_BT_ENTRY_BYTES_64 32
|
|
#define MPX_BT_NR_ENTRIES_64 (MPX_BT_SIZE_BYTES_64/MPX_BT_ENTRY_BYTES_64)
|
|
|
|
/*
|
|
* A 32-bit table is 16kB total in size, and an entry is
|
|
* 4 32-bit pointers in size.
|
|
*/
|
|
#define MPX_BT_SIZE_BYTES_32 (1UL<<14)
|
|
#define MPX_BT_ENTRY_BYTES_32 16
|
|
#define MPX_BT_NR_ENTRIES_32 (MPX_BT_SIZE_BYTES_32/MPX_BT_ENTRY_BYTES_32)
|
|
|
|
#define MPX_BNDSTA_TAIL 2
|
|
#define MPX_BNDCFG_TAIL 12
|
|
#define MPX_BNDSTA_ADDR_MASK (~((1UL<<MPX_BNDSTA_TAIL)-1))
|
|
#define MPX_BNDCFG_ADDR_MASK (~((1UL<<MPX_BNDCFG_TAIL)-1))
|
|
#define MPX_BNDSTA_ERROR_CODE 0x3
|
|
|
|
#ifdef CONFIG_X86_INTEL_MPX
|
|
siginfo_t *mpx_generate_siginfo(struct pt_regs *regs);
|
|
int mpx_handle_bd_fault(void);
|
|
static inline int kernel_managing_mpx_tables(struct mm_struct *mm)
|
|
{
|
|
return (mm->context.bd_addr != MPX_INVALID_BOUNDS_DIR);
|
|
}
|
|
static inline void mpx_mm_init(struct mm_struct *mm)
|
|
{
|
|
/*
|
|
* NULL is theoretically a valid place to put the bounds
|
|
* directory, so point this at an invalid address.
|
|
*/
|
|
mm->context.bd_addr = MPX_INVALID_BOUNDS_DIR;
|
|
}
|
|
void mpx_notify_unmap(struct mm_struct *mm, struct vm_area_struct *vma,
|
|
unsigned long start, unsigned long end);
|
|
#else
|
|
static inline siginfo_t *mpx_generate_siginfo(struct pt_regs *regs)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline int mpx_handle_bd_fault(void)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int kernel_managing_mpx_tables(struct mm_struct *mm)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void mpx_mm_init(struct mm_struct *mm)
|
|
{
|
|
}
|
|
static inline void mpx_notify_unmap(struct mm_struct *mm,
|
|
struct vm_area_struct *vma,
|
|
unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
#endif /* CONFIG_X86_INTEL_MPX */
|
|
|
|
#endif /* _ASM_X86_MPX_H */
|