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From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	npiggin@gmail.com, segher@kernel.crashing.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] powerpc/uaccess: Use flexible addressing with __put_user()/__get_user()
Date: Tue, 7 Jul 2020 14:44:12 +0200	[thread overview]
Message-ID: <8b751738-a9d1-8f55-8f9b-9264c8ac7ed8@csgroup.eu> (raw)
In-Reply-To: <875zb98i5a.fsf@mpe.ellerman.id.au>



Le 30/06/2020 à 03:19, Michael Ellerman a écrit :
> Michael Ellerman <mpe@ellerman.id.au> writes:
>> Christophe Leroy <christophe.leroy@csgroup.eu> writes:
>>> Hi Michael,
>>>
>>> I see this patch is marked as "defered" in patchwork, but I can't see
>>> any related discussion. Is it normal ?
>>
>> Because it uses the "m<>" constraint which didn't work on GCC 4.6.
>>
>> https://github.com/linuxppc/issues/issues/297
>>
>> So we should be able to pick it up for v5.9 hopefully.
> 
> It seems to break the build with the kernel.org 4.9.4 compiler and
> corenet64_smp_defconfig:

Most likely a GCC bug ?

It seems the problem vanishes with patch 
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/173de3b659fa3a5f126a0eb170522cccd909950f.1594125164.git.christophe.leroy@csgroup.eu/ 


Christophe

  parent reply	other threads:[~2020-07-07 12:44 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-16 12:39 [PATCH v2] powerpc/uaccess: Use flexible addressing with __put_user()/__get_user() Christophe Leroy
2020-06-29  6:52 ` Christophe Leroy
2020-06-29 11:27   ` Michael Ellerman
2020-06-30  1:19     ` Michael Ellerman
2020-06-30 14:55       ` Christophe Leroy
2020-06-30 16:33         ` Segher Boessenkool
2020-06-30 18:53           ` Christophe Leroy
2020-06-30 21:18             ` Segher Boessenkool
2020-07-01  7:05               ` Christophe Leroy
2020-07-07 12:44       ` Christophe Leroy [this message]
2020-07-07 19:02         ` Christophe Leroy
2020-07-08  4:49           ` Christophe Leroy
2020-08-12 12:32             ` Christophe Leroy
2020-08-12 19:30               ` Segher Boessenkool

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