linux-kernel - Re: [PATCH v2] um: Avoid longjmp/setjmp symbol clashes with libpthread.a

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Message-ID: <0effc7cf-7a86-bed6-58cf-d8fd6d3febd6@nod.at>
Date:   Fri, 2 Jun 2017 09:38:45 +0200
From:   Richard Weinberger <richard@....at>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Thomas Meyer <thomas@...3r.de>, linux-kernel@...r.kernel.org
Cc:     Jeff Dike <jdike@...toit.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "open list:USER-MODE LINUX (UML)" 
        <user-mode-linux-devel@...ts.sourceforge.net>,
        "open list:USER-MODE LINUX (UML)" 
        <user-mode-linux-user@...ts.sourceforge.net>
Subject: Re: [PATCH v2] um: Avoid longjmp/setjmp symbol clashes with
 libpthread.a

Thomas,

Am 02.06.2017 um 07:49 schrieb Florian Fainelli:
>> the put_fp_registers fails with errno 4 if I recall correctly.
>>
>> I didn't investigate yet further, why the the xstate ptrace call fails.
> 
> Which of the branches is put_fp_registers() taking? The
> restore_fpx_registers() or restore_fp_registers()? 4 would be EINTR...
> What kernel version is used on your host running the UML binary?

Another question, is this x86_64 UML on a x86_64 host?
Or i386 on x86_64, i386 on i386?

Thanks,
//richard