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Re: [Qemu-devel] Error handling in realize() methods


From: Paolo Bonzini
Subject: Re: [Qemu-devel] Error handling in realize() methods
Date: Wed, 9 Dec 2015 14:43:23 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0


On 09/12/2015 14:12, Dr. David Alan Gilbert wrote:
>> > Even if we don't, we should use &error_abort, not &error_fatal
>> > (programmer error---due to laziness---rather than user error).
>> > &error_fatal should really be restricted to code that is running very
>> > close to main().
> No, we used to have error_abort and changed them out for error_fatal because
> we were getting flooded with crash reports due to the aborts of people trying
> to run VMs too big for their machine.

That's a different call site, it's memory_region_allocate_system_memory
and it currently does a manual error_report_err+exit(1).  That one is
okay, because it's indeed running "very close to main()" (it's called by
machine_class->init, which is called by main).  It could be kept
open-coded or changed to error_fatal.

Paolo



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