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x86/idtentry: Switch to conditional RCU handling

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Switch all idtentry_enter/exit() users over to the new conditional RCU
handling scheme and make the user mode entries in #DB, #INT3 and #MCE use
the user mode idtentry functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202117.382387286@linutronix.de
This commit is contained in:
Thomas Gleixner
2020-05-21 22:05:19 +02:00
parent 9f9781b60d
commit fa95d7dc1a
3 changed files with 13 additions and 11 deletions
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4
arch/x86/kernel/cpu/mce/core.c
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@@ -1929,11 +1929,11 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
static __always_inline void exc_machine_check_user(struct pt_regs *regs)
{
idtentry_enter(regs);
idtentry_enter_user(regs);
instrumentation_begin();
machine_check_vector(regs);
instrumentation_end();
idtentry_exit(regs);
idtentry_exit_user(regs);
}
#ifdef CONFIG_X86_64