linux-kernel - Re: [PATCH] ia64: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone

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Message-ID: <79e58d9b-5a39-390c-2f0c-0d87b63442b4@physik.fu-berlin.de>
Date:   Wed, 13 May 2020 23:26:35 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     "Luck, Tony" <tony.luck@...el.com>,
        Christian Brauner <christian.brauner@...ntu.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Qais Yousef <qais.yousef@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ia64: enable HAVE_COPY_THREAD_TLS, switch to
 kernel_clone_args

Hi Tony!

On 5/13/20 11:19 PM, Luck, Tony wrote:
>> I tried my very best to test this patch including installing Debian 3
>> and 4 to try and get my hands on a gcc version that would allow
>> cross-compiling for ia64. But no, even that wasn't possible let alone a
>> working qemu for ia64. So this is largely untested but hopefully a
>> straightforward change. If this breaks something we will hear from
>> people if they still care about new kernels on ia64 since they won't be
>> able to get any further than trying to start init. :) If this patch
>> breaks it, I'll fix it.
> 
> My last functional ia64 machine no longer powers on. Unclear if it's just
> a broken power supply or something more serious. With almost nobody
> in offices/labs anymore my search for another machine is proceeding
> slowly.

I could test it.

As for getting a working cross-compiler for ia64 in Debian, this has
been on my TODO list for a while now. Building a cross-compiler for
ia64 is a bit more tricky due to it's dependency on the external
libunwind.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@...ian.org
`. `'   Freie Universitaet Berlin - glaubitz@...sik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913