diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-02-19 11:46:47 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-05-19 16:51:17 +0300 |
| commit | 69ea03b56ed2c7189ccd0b5910ad39f3cad1df21 (patch) | |
| tree | f5070915d8d90d28e70b6a467db88c69a73d803e /arch/arm64/kernel/traps.c | |
| parent | 28f6bf9e247fe23d177cfdbf7e709270e8cc7fa6 (diff) | |
| download | linux-69ea03b56ed2c7189ccd0b5910ad39f3cad1df21.tar.xz | |
hardirq/nmi: Allow nested nmi_enter()
Since there are already a number of sites (ARM64, PowerPC) that effectively
nest nmi_enter(), make the primitive support this before adding even more.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lkml.kernel.org/r/20200505134100.864179229@linutronix.de
Diffstat (limited to 'arch/arm64/kernel/traps.c')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index cf402be5c573..c728f163f329 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -906,17 +906,13 @@ bool arm64_is_fatal_ras_serror(struct pt_regs *regs, unsigned int esr) asmlinkage void do_serror(struct pt_regs *regs, unsigned int esr) { - const bool was_in_nmi = in_nmi(); - - if (!was_in_nmi) - nmi_enter(); + nmi_enter(); /* non-RAS errors are not containable */ if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(regs, esr)) arm64_serror_panic(regs, esr); - if (!was_in_nmi) - nmi_exit(); + nmi_exit(); } asmlinkage void enter_from_user_mode(void) |