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| author | Ingo Molnar <mingo@kernel.org> | 2020-08-06 10:16:38 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-08-06 10:16:38 +0200 |
| commit | a703f3633ff1d982bc4adfe7e0921bedb1701216 (patch) | |
| tree | eb85b29a0bbcb29045e197ab77e18ffc8649a722 /arch/x86/kernel/traps.c | |
| parent | a7ef9b28aa8d72a1656fa6f0a01bbd1493886317 (diff) | |
| parent | b5e6a027bd327daa679ca55182a920659e2cbb90 (diff) | |
| download | linux-a703f3633ff1d982bc4adfe7e0921bedb1701216.tar.bz2 | |
Merge branch 'WIP.locking/seqlocks' into locking/urgent
Pick up the full seqlock series PeterZ is working on.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/traps.c')
| -rw-r--r-- | arch/x86/kernel/traps.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index b7cb3e0716f7..8493f55e1167 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -245,7 +245,7 @@ static noinstr bool handle_bug(struct pt_regs *regs) DEFINE_IDTENTRY_RAW(exc_invalid_op) { - bool rcu_exit; + idtentry_state_t state; /* * We use UD2 as a short encoding for 'CALL __WARN', as such @@ -255,11 +255,11 @@ DEFINE_IDTENTRY_RAW(exc_invalid_op) if (!user_mode(regs) && handle_bug(regs)) return; - rcu_exit = idtentry_enter_cond_rcu(regs); + state = idtentry_enter(regs); instrumentation_begin(); handle_invalid_op(regs); instrumentation_end(); - idtentry_exit_cond_rcu(regs, rcu_exit); + idtentry_exit(regs, state); } DEFINE_IDTENTRY(exc_coproc_segment_overrun) @@ -405,7 +405,7 @@ DEFINE_IDTENTRY_DF(exc_double_fault) } #endif - nmi_enter(); + idtentry_enter_nmi(regs); instrumentation_begin(); notify_die(DIE_TRAP, str, regs, error_code, X86_TRAP_DF, SIGSEGV); @@ -651,15 +651,12 @@ DEFINE_IDTENTRY_RAW(exc_int3) instrumentation_end(); idtentry_exit_user(regs); } else { - nmi_enter(); + bool irq_state = idtentry_enter_nmi(regs); instrumentation_begin(); - trace_hardirqs_off_finish(); if (!do_int3(regs)) die("int3", regs, 0); - if (regs->flags & X86_EFLAGS_IF) - trace_hardirqs_on_prepare(); instrumentation_end(); - nmi_exit(); + idtentry_exit_nmi(regs, irq_state); } } @@ -867,9 +864,8 @@ out: static __always_inline void exc_debug_kernel(struct pt_regs *regs, unsigned long dr6) { - nmi_enter(); + bool irq_state = idtentry_enter_nmi(regs); instrumentation_begin(); - trace_hardirqs_off_finish(); /* * If something gets miswired and we end up here for a user mode @@ -886,10 +882,8 @@ static __always_inline void exc_debug_kernel(struct pt_regs *regs, handle_debug(regs, dr6, false); - if (regs->flags & X86_EFLAGS_IF) - trace_hardirqs_on_prepare(); instrumentation_end(); - nmi_exit(); + idtentry_exit_nmi(regs, irq_state); } static __always_inline void exc_debug_user(struct pt_regs *regs, @@ -905,6 +899,7 @@ static __always_inline void exc_debug_user(struct pt_regs *regs, instrumentation_begin(); handle_debug(regs, dr6, true); + instrumentation_end(); idtentry_exit_user(regs); } |