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Re: [PATCH v2 0/8] x86emul: a few small steps towards disintegration


  • To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Thu, 30 Mar 2023 17:14:30 +0200
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  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
  • Delivery-date: Thu, 30 Mar 2023 15:14:53 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 30.03.2023 16:27, Roger Pau Monné wrote:
> On Thu, Mar 30, 2023 at 01:40:43PM +0200, Jan Beulich wrote:
>> On 30.03.2023 11:54, Roger Pau Monné wrote:
>>> On Thu, Mar 30, 2023 at 09:53:23AM +0200, Jan Beulich wrote:
>>>> On 29.03.2023 16:17, Roger Pau Monné wrote:
>>> Patch 8 I'm unsure, I guess it should be up to the user to decide
>>> whether to use -Os or some other optimization?
>>>
>>> I expect introspection users likely care way more about the speed
>>> rather than the size of the generated x86 emulator code?
>>
>> Perhaps. But do we want to introduce another Kconfig control just
>> for that? And wouldn't there likely be other performance concerns,
>> if performance really mattered in the introspection case?
> 
> I don't really have a strong opinion on the usage of -Os or not.  It's
> likely fine as long as we also stay consistent with the flag we use
> when building the test harness and the fuzzer, just in case.

While they might be built with different compilers (and hence things can't
be compared directly anyway), I can certainly make those two use -Os as
well.

Jan



 


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