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From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Ard Biesheuvel <ardb@kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Keith Packard <keithpac@amazon.com>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Paul Mackerras <paulus@samba.org>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Kees Cook <keescook@chromium.org>,
        Andy Lutomirski <luto@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        "open list:LINUX FOR POWERPC (32-BIT AND 64-BIT)" 
        <linuxppc-dev@lists.ozlabs.org>,
        linux-riscv <linux-riscv@lists.infradead.org>,
        "open list:S390" <linux-s390@vger.kernel.org>
Subject: Re: [RFC PATCH 4/8] powerpc: add CPU field to struct thread_info
In-Reply-To: <CAMj1kXFXtbD3=L+QvCnwbyFr-qbWivZ0wRGT0N4LNxANPD8x4g@mail.gmail.com>
References: <20210914121036.3975026-1-ardb@kernel.org>
 <20210914121036.3975026-5-ardb@kernel.org>
 <CAMj1kXEojbQbNzCP39KT4EzFAyW3J1Tfm_stCZ+fGo8_SO90PA@mail.gmail.com>
 <87ee99lii7.fsf@mpe.ellerman.id.au> <87pmst1rn9.fsf@mpe.ellerman.id.au>
 <CAMj1kXFXtbD3=L+QvCnwbyFr-qbWivZ0wRGT0N4LNxANPD8x4g@mail.gmail.com>
Date:   Thu, 30 Sep 2021 08:46:04 +1000
Message-ID: <878rzf0zmb.fsf@mpe.ellerman.id.au>
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Ard Biesheuvel <ardb@kernel.org> writes:
> On Tue, 28 Sept 2021 at 02:16, Michael Ellerman <mpe@ellerman.id.au> wrote:
>>
>> Michael Ellerman <mpe@ellerman.id.au> writes:
>> > Ard Biesheuvel <ardb@kernel.org> writes:
>> >> On Tue, 14 Sept 2021 at 14:11, Ard Biesheuvel <ardb@kernel.org> wrote:
>> >>>
>> >>> The CPU field will be moved back into thread_info even when
>> >>> THREAD_INFO_IN_TASK is enabled, so add it back to powerpc's definition
>> >>> of struct thread_info.
>> >>>
>> >>> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
>> >>
>> >> Michael,
>> >>
>> >> Do you have any objections or issues with this patch or the subsequent
>> >> ones cleaning up the task CPU kludge for ppc32? Christophe indicated
>> >> that he was happy with it.
>> >
>> > No objections, it looks good to me, thanks for cleaning up that horror :)
>> >
>> > It didn't apply cleanly to master so I haven't tested it at all, if you can point me at a
>> > git tree with the dependencies I'd be happy to run some tests over it.
>>
>> Actually I realised I can just drop the last patch.
>>
>> So that looks fine, passes my standard quick build & boot on qemu tests,
>> and builds with/without stack protector enabled.
>>
>
> Thanks.
>
> Do you have any opinion on how this series should be merged? Kees Cook
> is willing to take them via his cross-arch tree, or you could carry
> them if you prefer. Taking it via multiple trees at the same time is
> going to be tricky, or take two cycles, with I'd prefer to avoid.

I don't really mind. If Kees is happy to take it then that's OK by me.

If Kees put the series in a topic branch based off rc2 then I could
merge that, and avoid any conflicts.

cheers