linux-kernel - [PATCH 5.1 020/405] arm64: Kconfig: Make ARM64_PSEUDO

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Date:   Wed, 29 May 2019 20:00:18 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Julien Thierry <julien.thierry@....com>,
        Marc Zyngier <marc.zyngier@....com>,
        Will Deacon <will.deacon@....com>
Subject: [PATCH 5.1 020/405] arm64: Kconfig: Make ARM64_PSEUDO_NMI depend on BROKEN for now

From: Will Deacon <will.deacon@....com>

commit 96a13f57b946be7a6c10405e4bd780c0b6b6fe63 upstream.

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@...r.kernel.org> # 5.1
Cc: Julien Thierry <julien.thierry@....com>
Acked-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Will Deacon <will.deacon@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1347,6 +1347,7 @@ 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@....com
 	select CONFIG_ARM_GIC_V3
 	help
 	  Adds support for mimicking Non-Maskable Interrupts through the use of