diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-02-25 23:16:27 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:14:51 +0200 |
| commit | 14a8bd2aa7c355b3a8879618a4f70f9c2b0004f7 (patch) | |
| tree | 33f3932201b55eb7326e3759fa816d7217474ee6 /arch/x86/kernel | |
| parent | dad7106f8194df1b096666c5499ef732497ddb15 (diff) | |
x86/entry: Convert Coprocessor error exception to IDTENTRY
Convert #MF to IDTENTRY_ERRORCODE:
- Implement the C entry point with DEFINE_IDTENTRY
- Emit the ASM stub with DECLARE_IDTENTRY
- Remove the ASM idtentry in 64bit
- Remove the open coded ASM entry code in 32bit
- Fixup the XEN/PV code
- Remove the old prototypes
- Remove the RCU warning as the new entry macro ensures correctness
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20200505134905.838823510@linutronix.de
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/idt.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/traps.c | 5 |
2 files changed, 3 insertions, 4 deletions
diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 8e8936dcf6e4..2bde50d4cfa1 100644 --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -84,7 +84,7 @@ static const __initconst struct idt_data def_idts[] = { INTG(X86_TRAP_SS, asm_exc_stack_segment), INTG(X86_TRAP_GP, asm_exc_general_protection), INTG(X86_TRAP_SPURIOUS, asm_exc_spurious_interrupt_bug), - INTG(X86_TRAP_MF, coprocessor_error), + INTG(X86_TRAP_MF, asm_exc_coprocessor_error), INTG(X86_TRAP_AC, alignment_check), INTG(X86_TRAP_XF, simd_coprocessor_error), diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 2c638b9bc827..ba26bebfed72 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -854,10 +854,9 @@ exit: cond_local_irq_disable(regs); } -dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code) +DEFINE_IDTENTRY(exc_coprocessor_error) { - RCU_LOCKDEP_WARN(!rcu_is_watching(), "entry code didn't wake RCU"); - math_error(regs, error_code, X86_TRAP_MF); + math_error(regs, 0, X86_TRAP_MF); } dotraplinkage void |