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Date:      Sat, 29 Dec 2018 12:47:39 -0500
From:      Dennis Clarke <dclarke@blastwave.org>
To:        freebsd-arm@freebsd.org
Subject:   Re: A reliable port cross-build failure (hangup) in my context (amd64->armv7 cross build, with native-tool speedup involved)
Message-ID:  <d99f28fd-5c6c-db6f-2d78-9ea6a697af2e@blastwave.org>
In-Reply-To: <2E3F6196-4652-40D2-937F-8860B6005A35@yahoo.com>
References:  <FF9B4284-4E6B-4D36-86A0-18861B527AC0@yahoo.com> <865A13C8-9749-486E-9F79-5EEDDECBE621@yahoo.com> <0154C3AC-D85B-4FCF-BA63-454BC26BC1A2@yahoo.com> <A6A58CE3-062B-4B79-A8C2-ADFDAA04C6AF@yahoo.com> <13f5e4dd-33fb-2170-e31a-1b5d5f155869@freebsd.org> <ABA957EA-B8EE-4B8C-9C2F-B745BA652BF6@yahoo.com> <2E3F6196-4652-40D2-937F-8860B6005A35@yahoo.com>

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On 12/28/18 9:56 PM, Mark Millard via freebsd-arm wrote:
> 
> On 2018-Dec-28, at 12:12, Mark Millard <marklmi at yahoo.com> wrote:
> 
>> On 2018-Dec-28, at 05:13, Michal Meloun <melounmichal at gmail.com> wrote:
>>
>>> Mark,
>>> this is known problem with qemu-user-static.
>>> Emulation of every single interruptible syscall is broken by design (it
>>> have signal related races). Theses races cannot be solved without major
>>> rewrite of syscall emulation code.
>>> Unfortunately, nobody actively works on this, I think.
>>>

Following along here quietly and I had to blink at this a few times.
Is there a bug report somewhere within the qemu world related to this
  'broken by design' qemu feature?


Dennis



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