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arch/metag fixes for v4.0

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This is just a single patch to fix the KSTK_EIP() and KSTK_ESP() macros
 for metag which have always been erronously returning the PC and stack
 pointer of the task's kernel context rather than from its user context
 saved at entry from userland into the kernel, which affects the contents
 of /proc/<pid>/maps and /proc/<pid>/stat.
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Merge tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag

Pull arch/metag fix from James Hogan:
 "This is just a single patch to fix the KSTK_EIP() and KSTK_ESP()
  macros for metag which have always been erronously returning the PC
  and stack pointer of the task's kernel context rather than from its
  user context saved at entry from userland into the kernel, which
  affects the contents of /proc/<pid>/maps and /proc/<pid>/stat"

* tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  metag: Fix KSTK_EIP() and KSTK_ESP() macros
This commit is contained in:
Linus Torvalds 2015-03-02 14:02:17 -08:00
commit 49db1f0ef2
1 changed files with 2 additions and 2 deletions
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4
arch/metag/include/asm/processor.h
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@ -149,8 +149,8 @@ extern void exit_thread(void);
unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.kernel_context->CurrPC)
#define KSTK_ESP(tsk) ((tsk)->thread.kernel_context->AX[0].U0)
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->ctx.CurrPC)
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->ctx.AX[0].U0)
#define user_stack_pointer(regs) ((regs)->ctx.AX[0].U0)