There is a nice macro to check user mode.
Use it instead of open coding anding with MSR_PR to increase
readability and avoid having to comment what that anding is for.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 2 +-
arch/powerpc/kernel/syscall.c| 2 +-
arch/powerpc/kernel/traps.c | 4 ++--
arch/powerpc/lib/sstep.c | 23 +++
arch/powerpc/perf/core-book3s.c | 2 +-
arch/powerpc/xmon/xmon.c | 4 ++--
6 files changed, 18 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/include/asm/interrupt.h
b/arch/powerpc/include/asm/interrupt.h
index a4196ab1d016..7b610864b364 100644
--- a/arch/powerpc/include/asm/interrupt.h
+++ b/arch/powerpc/include/asm/interrupt.h
@@ -97,7 +97,7 @@ DECLARE_STATIC_KEY_FALSE(interrupt_exit_not_reentrant);
static inline bool is_implicit_soft_masked(struct pt_regs *regs)
{
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
return false;
if (regs->nip >= (unsigned long)__end_soft_masked)
diff --git a/arch/powerpc/kernel/syscall.c b/arch/powerpc/kernel/syscall.c
index 77fedb190c93..f6f868e817e6 100644
--- a/arch/powerpc/kernel/syscall.c
+++ b/arch/powerpc/kernel/syscall.c
@@ -31,7 +31,7 @@ notrace long system_call_exception(struct pt_regs *regs,
unsigned long r0)
user_exit_irqoff();
BUG_ON(regs_is_unrecoverable(regs));
- BUG_ON(!(regs->msr & MSR_PR));
+ BUG_ON(!user_mode(regs));
BUG_ON(arch_irq_disabled_regs(regs));
#ifdef CONFIG_PPC_PKEY
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 11e062b47d3f..f23430adb68a 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -404,7 +404,7 @@ noinstr void hv_nmi_check_nonrecoverable(struct pt_regs
*regs)
return;
if (!(regs->msr & MSR_HV))
return;
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
return;
/*
@@ -1510,7 +1510,7 @@ static void do_program_check(struct pt_regs *regs)
if (!is_kernel_addr(bugaddr) && !(regs->msr & MSR_IR))
bugaddr += PAGE_OFFSET;
- if (!(regs->msr & MSR_PR) && /* not user-mode */
+ if (!user_mode(regs) &&
report_bug(bugaddr, regs) == BUG_TRAP_TYPE_WARN) {
regs_add_return_ip(regs, 4);
return;
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 5766180f5380..e65f3fb68d06 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1429,7 +1429,7 @@ int analyse_instr(struct instruction_op *op, const struct
pt_regs *regs,
return 1;
case 18:/* rfid, scary */
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
goto priv;
op->type = RFI;
return 0;
@@ -1742,13 +1742,13 @@ int analyse_instr(struct instruction_op *op, const
struct pt_regs *regs,
return 1;
#endif
case 83:/* mfmsr */
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
goto priv;
op->type = MFMSR;
op->reg = rd;
return 0;
case 146: /* mtmsr */
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
goto priv;
op->type = MTMSR;
op->reg = rd;
@@ -1756,7 +1756,7 @@ int analyse_instr(struct instruction_op *op, const struct
pt_regs *regs,
return 0;
#ifdef CONFIG_PPC64
case 178: /* mtmsrd */
- if (regs->msr & MSR_PR)
+ if (user_mode(regs))
goto priv;
op->type = MTMSR;
op->reg = rd;
@@ -3437,14 +3437,14 @@ int emulate_loadstore(struct pt_regs *regs, struct
instruction_op *op)
* stored in the thread_struct. If the instruction is in
* the kernel, we must not touch the state in the thread_struct.
*/
- if (!(regs->msr & MSR_PR) && !(regs->msr & MSR_FP))
+ if (!user_mode(regs) && !(regs->msr & MSR_FP))
return 0;
err = do_fp_load(op, ea, regs, cross_endian);
break;
#endif
#ifdef CONFIG_ALTIVEC
case LOAD_VMX:
- if (!(regs->msr & MSR_PR) && !(regs->msr & MSR_VEC))
+ if (!user_mode(regs) && !(regs->msr & MSR_VEC))
return 0;
err = do_vec_load(op->reg, ea, size, regs, cross_endian);
break;
@@ -3459,7 +3459,7
