From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Daniel Axtens <dja@axtens.net>, Paul Mackerras <paulus@samba.org>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v3 03/15] powerpc/align: Convert emulate_spe() to user_access_begin
Date: Sun, 11 Apr 2021 00:28:46 +1000 [thread overview]
Message-ID: <161806492680.1467223.16788785953274402372.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <c95a648fdf75992c9d88f3c73cc23e7537fcf2ad.1615555354.git.christophe.leroy@csgroup.eu>
On Fri, 12 Mar 2021 13:25:11 +0000 (UTC), Christophe Leroy wrote:
> This patch converts emulate_spe() to using user_access_begin
> logic.
>
> Since commit 662bbcb2747c ("mm, sched: Allow uaccess in atomic with
> pagefault_disable()"), might_fault() doesn't fire when called from
> sections where pagefaults are disabled, which must be the case
> when using _inatomic variants of __get_user and __put_user. So
> the might_fault() in user_access_begin() is not a problem.
>
> [...]
Applied to powerpc/next.
[03/15] powerpc/align: Convert emulate_spe() to user_access_begin
https://git.kernel.org/powerpc/c/3fa3db32956d74c0784171ae0334685502bb169a
cheers
WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Daniel Axtens <dja@axtens.net>, Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 03/15] powerpc/align: Convert emulate_spe() to user_access_begin
Date: Sun, 11 Apr 2021 00:28:46 +1000 [thread overview]
Message-ID: <161806492680.1467223.16788785953274402372.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <c95a648fdf75992c9d88f3c73cc23e7537fcf2ad.1615555354.git.christophe.leroy@csgroup.eu>
On Fri, 12 Mar 2021 13:25:11 +0000 (UTC), Christophe Leroy wrote:
> This patch converts emulate_spe() to using user_access_begin
> logic.
>
> Since commit 662bbcb2747c ("mm, sched: Allow uaccess in atomic with
> pagefault_disable()"), might_fault() doesn't fire when called from
> sections where pagefaults are disabled, which must be the case
> when using _inatomic variants of __get_user and __put_user. So
> the might_fault() in user_access_begin() is not a problem.
>
> [...]
Applied to powerpc/next.
[03/15] powerpc/align: Convert emulate_spe() to user_access_begin
https://git.kernel.org/powerpc/c/3fa3db32956d74c0784171ae0334685502bb169a
cheers
next prev parent reply other threads:[~2021-04-10 14:29 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 17:46 [PATCH v2 00/15] powerpc: Cleanup of uaccess.h and adding asm goto for get_user() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 01/15] powerpc/uaccess: Remove __get_user_allowed() and unsafe_op_wrap() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 21:47 ` Daniel Axtens
2021-03-10 17:46 ` [PATCH v2 02/15] powerpc/uaccess: Define ___get_user_instr() for ppc32 Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 03/15] powerpc/align: Convert emulate_spe() to user_access_begin Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 22:31 ` Daniel Axtens
2021-03-11 5:45 ` Christophe Leroy
2021-03-12 13:25 ` [PATCH v3 " Christophe Leroy
2021-03-12 13:25 ` Christophe Leroy
2021-04-10 14:28 ` Michael Ellerman [this message]
2021-04-10 14:28 ` Michael Ellerman
2021-03-10 17:46 ` [PATCH v2 04/15] powerpc/uaccess: Remove __get/put_user_inatomic() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 22:37 ` Daniel Axtens
2021-03-10 17:46 ` [PATCH v2 05/15] powerpc/uaccess: Move get_user_instr helpers in asm/inst.h Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-25 21:59 ` Daniel Axtens
2021-03-25 21:59 ` Daniel Axtens
2021-03-10 17:46 ` [PATCH v2 06/15] powerpc/align: Don't use __get_user_instr() on kernel addresses Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-25 22:12 ` Daniel Axtens
2021-03-25 22:12 ` Daniel Axtens
2021-03-10 17:46 ` [PATCH v2 07/15] powerpc/uaccess: Call might_fault() inconditionaly Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-25 22:38 ` Daniel Axtens
2021-03-25 22:38 ` Daniel Axtens
2021-03-25 22:44 ` Daniel Axtens
2021-03-25 22:44 ` Daniel Axtens
2021-03-10 17:46 ` [PATCH v2 08/15] powerpc/uaccess: Remove __unsafe_put_user_goto() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 09/15] powerpc/uaccess: Remove __chk_user_ptr() in __get/put_user Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 10/15] powerpc/uaccess: Remove calls to __get_user_bad() and __put_user_bad() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 11/15] powerpc/uaccess: Split out __get_user_nocheck() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 12/15] powerpc/uaccess: Rename __get/put_user_check/nocheck Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 13/15] powerpc/uaccess: Refactor get/put_user() and __get/put_user() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 14/15] powerpc/uaccess: Introduce __get_user_size_goto() Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-03-10 17:46 ` [PATCH v2 15/15] powerpc/uaccess: Use asm goto for get_user when compiler supports it Christophe Leroy
2021-03-10 17:46 ` Christophe Leroy
2021-04-10 14:28 ` [PATCH v2 00/15] powerpc: Cleanup of uaccess.h and adding asm goto for get_user() Michael Ellerman
2021-04-10 14:28 ` Michael Ellerman
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