arm64: Kconfig: Make ARM64_PSEUDO_NMI depend on BROKEN for now

Although we merged support for pseudo-nmi using interrupt priority
masking in 5.1, we've since uncovered a number of non-trivial issues
with the implementation. Although there are patches pending to address
these problems, we're facing issues that prevent us from merging them at
this current time:

  https://lkml.kernel.org/r/1556553607-46531-1-git-send-email-julien.thierry@arm.com

For now, simply mark this optional feature as BROKEN in the hope that we
can fix things properly in the near future.

Cc: <stable@vger.kernel.org> # 5.1
Cc: Julien Thierry <julien.thierry@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 6a95446..f6275c2 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1422,6 +1422,7 @@ config ARM64_MODULE_PLTS
 
 config ARM64_PSEUDO_NMI
        bool "Support for NMI-like interrupts"
+       depends on BROKEN # 1556553607-46531-1-git-send-email-julien.thierry@arm.com
        select CONFIG_ARM_GIC_V3
        help
          Adds support for mimicking Non-Maskable Interrupts through the use of