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tile: don't assume user privilege is zero

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Technically, user privilege is anything less than kernel
privilege.  We modify the existing user_mode() macro to have
this semantic (and use it in a couple of places it wasn't being
used before), and add an IS_KERNEL_EX1() macro to the assembly
code as well.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2013-09-03 14:45:52 -04:00
parent 309272f99f
commit 051168df52
5 changed files with 23 additions and 12 deletions
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arch/tile/include/asm/ptrace.h
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@@ -39,7 +39,7 @@ typedef unsigned long pt_reg_t;
#define user_stack_pointer(regs) ((regs)->sp)
/* Does the process account for user or for system time? */
#define user_mode(regs) (EX1_PL((regs)->ex1) == USER_PL)
#define user_mode(regs) (EX1_PL((regs)->ex1) < KERNEL_PL)
/* Fill in a struct pt_regs with the current kernel registers. */
struct pt_regs *get_pt_regs(struct pt_regs *);