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From: Heiko Carstens <hca@linux.ibm.com>
To: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>,
	Sven Schnelle <svens@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: Re: [PATCH 2/4] kfence: add function to mask address bits
Date: Thu, 29 Jul 2021 14:25:25 +0200	[thread overview]
Message-ID: <YQKeNbU4HJhFP8kn@osiris> (raw)
In-Reply-To: <YQJdarx6XSUQ1tFZ@elver.google.com>

On Thu, Jul 29, 2021 at 09:48:58AM +0200, Marco Elver wrote:
> On Wed, Jul 28, 2021 at 09:02PM +0200, Heiko Carstens wrote:
> > From: Sven Schnelle <svens@linux.ibm.com>
> > 
> > s390 only reports the page address during a translation fault.
> > To make the kfence unit tests pass, add a function that might
> > be implemented by architectures to mask out address bits.
> > 
> > Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
> > Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
> 
> I noticed this breaks on x86 if CONFIG_KFENCE_KUNIT_TEST=m, because x86
> conditionally declares some asm functions if !MODULE.
> 
> I think the below is the simplest to fix, and if you agree, please carry
> it as a patch in this series before this patch.

Will do.

> With the below, you can add to this patch:
> 
> 	Reviewed-by: Marco Elver <elver@google.com>

Done - Thank you! I silently assume this means also you have no
objections if we carry this via the s390 tree for upstreaming.


  reply	other threads:[~2021-07-29 12:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-28 19:02 [PATCH 0/4] s390: add kfence support Heiko Carstens
2021-07-28 19:02 ` [PATCH 1/4] s390/mm: implement set_memory_4k() Heiko Carstens
2021-07-28 19:02 ` [PATCH 2/4] kfence: add function to mask address bits Heiko Carstens
2021-07-28 19:28   ` Christian Borntraeger
2021-07-29  7:48   ` Marco Elver
2021-07-29 12:25     ` Heiko Carstens [this message]
2021-07-29 12:27       ` Marco Elver
2021-07-29 12:43   ` Alexander Potapenko
2021-07-29 13:47     ` Sven Schnelle
2021-07-29 13:59       ` Alexander Potapenko
2021-07-28 19:02 ` [PATCH 3/4] s390: add support for KFENCE Heiko Carstens
2021-07-28 19:02 ` [PATCH 4/4] s390: add kfence region to pagetable dumper Heiko Carstens

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