From: Benjamin Gray <bgray@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Jordan Niethe <jniethe5@gmail.com>
Subject: Re: [PATCH] powerpc/powermac: Use early_* IO variants in via_calibrate_decr
Date: Fri, 07 Jul 2023 12:32:21 +1000 [thread overview]
Message-ID: <643ebc8519d22e0ed869989490f39780c1bde09d.camel@linux.ibm.com> (raw)
In-Reply-To: <20230706010816.72682-1-bgray@linux.ibm.com>
On Thu, 2023-07-06 at 11:08 +1000, Benjamin Gray wrote:
> The issue is pre-existing, but is surfaced by commit 721255b9826b
> ("genirq: Use a maple tree for interrupt descriptor management").
> It's not clear to me why this causes it to surface.
From the thread chain in [1], it looks like the maple tree
implementation just has different allocation behaviour, which follows a
pre-existing code path to kmem_cache_alloc_bulk(), which
unconditionally enables interrupts.
(thanks Jordan Niethe for finding this thread)
[1]: https://lore.kernel.org/all/87o7qdzfay.ffs@tglx/
next prev parent reply other threads:[~2023-07-07 2:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-06 1:08 [PATCH] powerpc/powermac: Use early_* IO variants in via_calibrate_decr Benjamin Gray
2023-07-06 4:37 ` Christophe Leroy
2023-07-07 2:32 ` Benjamin Gray [this message]
2023-08-02 13:10 ` Michael Ellerman
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