From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
To: <wangxiongfeng2@huawei.com>, <huawei.libin@huawei.com>,
<james.morse@arm.com>, <catalin.marinas@arm.com>,
<will.deacon@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Subject: [RFC PATCH 1/3] Revert "arm64: debug: remove unused local_dbg_{enable, disable} macros"
Date: Fri, 12 Apr 2019 20:04:57 +0800 [thread overview]
Message-ID: <1555070699-3685-2-git-send-email-wangxiongfeng2@huawei.com> (raw)
In-Reply-To: <1555070699-3685-1-git-send-email-wangxiongfeng2@huawei.com>
This reverts commit 2572214170fb95370be21915c0397f4b6a27e7e3.
This is a preparation for the following patch. We need to enable debug
in _sdei_handler, so let's revert this patch.
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
---
arch/arm64/include/asm/irqflags.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/include/asm/irqflags.h b/arch/arm64/include/asm/irqflags.h
index 43d8366..0a54c45 100644
--- a/arch/arm64/include/asm/irqflags.h
+++ b/arch/arm64/include/asm/irqflags.h
@@ -140,5 +140,9 @@ static inline int arch_irqs_disabled_flags(unsigned long flags)
return res;
}
+
+#define local_dbg_enable() asm("msr daifclr, #8" : : : "memory")
+#define local_dbg_disable() asm("msr daifset, #8" : : : "memory")
+
#endif
#endif
--
1.7.12.4
next prev parent reply other threads:[~2019-04-12 12:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 12:04 [RFC PATCH 0/3] Enable kprobe to monitor sdei event handler Xiongfeng Wang
2019-04-12 12:04 ` Xiongfeng Wang [this message]
2019-04-12 12:04 ` [RFC PATCH 2/3] sdei: enable dbg in '_sdei_handler' Xiongfeng Wang
2019-04-24 16:21 ` James Morse
2019-04-12 12:04 ` [RFC PATCH 3/3] stop_machine: mask sdei before running the callback Xiongfeng Wang
2019-04-24 16:20 ` [RFC PATCH 0/3] Enable kprobe to monitor sdei event handler James Morse
2019-04-26 8:19 ` Xiongfeng Wang
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