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Re: [Qemu-devel] [PATCH 06/47] hw/alpha/Makefile.objs: Build objects dep


From: Lluís Vilanova
Subject: Re: [Qemu-devel] [PATCH 06/47] hw/alpha/Makefile.objs: Build objects depending on CLIPPER
Date: Mon, 26 Aug 2013 21:44:25 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

Richard Henderson writes:

> On 08/26/2013 09:59 AM, Paolo Bonzini wrote:
>>> I don't understand the point of this.  There is one alpha emulation;
>>> if you disable it you're left with a program that's not useful.  So
>>> why the configuration for it at all?
>> 
>> I think this was just for consistency with other targets.  Either this
>> patch can be left out completely, or the symbol can be made default on
>> and unchangeable by the user.

> Yeah, maybe.  I'll be interested to see the v2 cover-letter with your 
> requested
> description of what the series brings to the table.

Didn't look much into the patches, so I'm not sure if this includes both the
configuration and build system for Linux, but the kernel's build system might
provide a more robust and flexible build system.


> This isn't the kernel, where non-pagable code size is a concern, so I don't 
> see
> how full configuration of machine emulations and devices is helpful.  I'd be
> more inclined to go the other way, where all qemu-system-cpu images always
> build in all devices (compiled once of course).

Which reminds me of some older discussion about having a single QEMU binary able
to emulate a system with CPUs from different architectures (with a future^2
version of qom'ified CPUs).

Such fine-grained compilation would deviate even more from that goal (assuming
it's a goal).


Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth



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