From: Christophe LEROY <christophe.leroy@c-s.fr>
To: Nicholas Piggin <npiggin@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
aneesh.kumar@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFC PATCH v3 4/7] powerpc: regain entire stack space
Date: Wed, 3 Oct 2018 07:52:59 +0200 [thread overview]
Message-ID: <6a539614-abb6-d468-ccba-2e3c1fb8b680@c-s.fr> (raw)
In-Reply-To: <20181003153448.3fb64e19@roar.ozlabs.ibm.com>
Le 03/10/2018 à 07:34, Nicholas Piggin a écrit :
> On Mon, 1 Oct 2018 12:30:25 +0000 (UTC)
> Christophe Leroy <christophe.leroy@c-s.fr> wrote:
>
>> thread_info is not anymore in the stack, so the entire stack
>> can now be used.
>
> Nice.
>
>>
>> In the meantime, all pointers to the stacks are not anymore
>> pointers to thread_info so this patch changes them to void*
>
> Wasn't this previously effectively already the case with patch
> 3/7? You had thread_info sized space left there, but it was not
> used or initialized right? Does it make sense to move this part
> of it to the previous patch?
Not really.
In 3/7 I changed the prototypes of two functions that really used the
pointer as a task pointer only.
Here it change things that before 4/7 were really used as both stack
pointers and thread_info pointers.
Christophe
>
> Thanks,
> Nick
>
next prev parent reply other threads:[~2018-10-03 5:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-01 12:30 [RFC PATCH v3 0/7] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-10-01 12:30 ` [RFC PATCH v3 1/7] book3s/64: avoid circular header inclusion in mmu-hash.h Christophe Leroy
2018-10-03 4:24 ` Nicholas Piggin
2018-10-04 8:20 ` Christophe LEROY
2018-10-04 8:23 ` Aneesh Kumar K.V
2018-10-04 8:32 ` Christophe LEROY
2018-10-01 12:30 ` [RFC PATCH v3 2/7] powerpc: Prepare for moving thread_info into task_struct Christophe Leroy
2018-10-03 5:02 ` Nicholas Piggin
2018-10-03 5:49 ` Christophe LEROY
2018-10-03 5:57 ` Nicholas Piggin
2018-10-04 14:29 ` Christophe LEROY
2018-10-01 12:30 ` [RFC PATCH v3 3/7] powerpc: Activate CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-10-03 5:30 ` Nicholas Piggin
2018-10-03 5:47 ` Christophe LEROY
2018-10-03 5:52 ` Nicholas Piggin
2018-10-03 6:04 ` Christophe LEROY
2018-10-03 6:23 ` Nicholas Piggin
2018-10-01 12:30 ` [RFC PATCH v3 4/7] powerpc: regain entire stack space Christophe Leroy
2018-10-03 5:34 ` Nicholas Piggin
2018-10-03 5:52 ` Christophe LEROY [this message]
2018-10-03 6:30 ` Nicholas Piggin
2018-10-03 6:45 ` Christophe LEROY
2018-10-03 7:07 ` Nicholas Piggin
2018-10-03 9:30 ` Christophe LEROY
2018-10-01 12:30 ` [RFC PATCH v3 5/7] powerpc: 'current_set' is now a table of task_struct pointers Christophe Leroy
2018-10-03 5:41 ` Nicholas Piggin
2018-10-03 6:00 ` Christophe LEROY
2018-10-03 6:09 ` Nicholas Piggin
2018-10-01 12:30 ` [RFC PATCH v3 6/7] powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU Christophe Leroy
2018-10-01 12:30 ` [RFC PATCH v3 7/7] powerpc/64: Modify CURRENT_THREAD_INFO() Christophe Leroy
2018-10-03 5:44 ` Nicholas Piggin
2018-10-03 6:01 ` Christophe LEROY
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