diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/mpx.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 9d67e230b4fb..47e4a8564012 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -271,8 +271,7 @@ bad_opcode: * * The caller is expected to kfree() the returned siginfo_t. */ -siginfo_t *mpx_generate_siginfo(struct pt_regs *regs, - struct task_struct *tsk) +siginfo_t *mpx_generate_siginfo(struct pt_regs *regs) { const struct bndreg *bndregs, *bndreg; siginfo_t *info = NULL; @@ -340,7 +339,7 @@ err_out: return ERR_PTR(err); } -static __user void *task_get_bounds_dir(struct task_struct *tsk) +static __user void *mpx_get_bounds_dir(void) { const struct bndcsr *bndcsr; @@ -376,10 +375,10 @@ static __user void *task_get_bounds_dir(struct task_struct *tsk) (bndcsr->bndcfgu & MPX_BNDCFG_ADDR_MASK); } -int mpx_enable_management(struct task_struct *tsk) +int mpx_enable_management(void) { void __user *bd_base = MPX_INVALID_BOUNDS_DIR; - struct mm_struct *mm = tsk->mm; + struct mm_struct *mm = current->mm; int ret = 0; /* @@ -393,7 +392,7 @@ int mpx_enable_management(struct task_struct *tsk) * directory here means that we do not have to do xsave in the * unmap path; we can just use mm->bd_addr instead. */ - bd_base = task_get_bounds_dir(tsk); + bd_base = mpx_get_bounds_dir(); down_write(&mm->mmap_sem); mm->bd_addr = bd_base; if (mm->bd_addr == MPX_INVALID_BOUNDS_DIR) @@ -403,7 +402,7 @@ int mpx_enable_management(struct task_struct *tsk) return ret; } -int mpx_disable_management(struct task_struct *tsk) +int mpx_disable_management(void) { struct mm_struct *mm = current->mm; @@ -497,7 +496,7 @@ out_unmap: * bound table is 16KB. With 64-bit mode, the size of BD is 2GB, * and the size of each bound table is 4MB. */ -static int do_mpx_bt_fault(struct task_struct *tsk) +static int do_mpx_bt_fault(void) { unsigned long bd_entry, bd_base; const struct bndcsr *bndcsr; @@ -525,7 +524,7 @@ static int do_mpx_bt_fault(struct task_struct *tsk) return allocate_bt((long __user *)bd_entry); } -int mpx_handle_bd_fault(struct task_struct *tsk) +int mpx_handle_bd_fault(void) { /* * Userspace never asked us to manage the bounds tables, @@ -534,7 +533,7 @@ int mpx_handle_bd_fault(struct task_struct *tsk) if (!kernel_managing_mpx_tables(current->mm)) return -EINVAL; - if (do_mpx_bt_fault(tsk)) { + if (do_mpx_bt_fault()) { force_sig(SIGSEGV, current); /* * The force_sig() is essentially "handling" this |