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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Frank Rowand <frank.rowand@am.sony.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH RT] Revert "ARM: Initialize split page table locks for vector page"
Date: Tue, 15 Oct 2019 18:40:27 +0200	[thread overview]
Message-ID: <20191015164026.6lfu4meeclpijxar@linutronix.de> (raw)
In-Reply-To: <20191015162609.GH32665@bombadil.infradead.org>

On 2019-10-15 09:26:09 [-0700], Matthew Wilcox wrote:
> Did your test build have ALLOC_SPLIT_PTLOCKS defined?

I tried to explain that ptlock_ptr() returns NULL for the page before
the ctor invocation and non-NULL afterwards which means that
USE_SPLIT_PTE_PTLOCKS and ALLOC_SPLIT_PTLOCKS was defined.

Sebastian

      reply	other threads:[~2019-10-15 16:40 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-14 16:02 [PATCH RT] Revert "ARM: Initialize split page table locks for vector page" Sebastian Andrzej Siewior
2019-10-15 16:26 ` Matthew Wilcox
2019-10-15 16:40   ` Sebastian Andrzej Siewior [this message]

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