[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH for-1.5 0/9] Disable expensive QOM cast debuggin

From: Andreas Färber
Subject: Re: [Qemu-devel] [PATCH for-1.5 0/9] Disable expensive QOM cast debugging for official releases
Date: Fri, 10 May 2013 15:23:16 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5

Am 10.05.2013 15:08, schrieb Paolo Bonzini:
> Il 10/05/2013 15:01, Anthony Liguori ha scritto:
>> I'd prefer not to disable but instead focus on improving performance.
> For 1.5?  This is a regression in 1.5 due to more and more usage of
> foo_env_on_cpu.

If CPUs were the only reason, we could simply change those inlines and
ENV_GET_CPU() macro to use a C cast. No complicated interface scenarios
requiring a dynamic cast are used for CPUs so far to my knowledge.

Either way, it would be nice to see the call sites of those
most-impacting dynamic casts! So far I held back my APIC RFC since I'm
not sure how to reproducibly profile things.


SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

reply via email to

[Prev in Thread] Current Thread [Next in Thread]