Date: Wed, 19 Mar 2008 15:48:46 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: walt <w41ter@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: vkernel & GSoC, some questions Message-ID: <200803192248.m2JMmkEn045986@apollo.backplane.com> References: <200803172158.m2HLwPSI021438@apollo.backplane.com> <E1JbWLD-000ALT-00.shmukler-mail-ru@f131.mail.ru> <200803181806.m2II6OMc031236@apollo.backplane.com> <frphq3$vce$1@ger.gmane.org>
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:Matthew Dillon wrote:
:> :Matt,
:>...
:> :Don't you use something like VMWare for development and debugging?
:
:> We use vkernel's for development and debugging. Pretty much everything
:> except hardware device driver development can be done using a vkernel...
:
:Does that include trying to get rid of the BGL, for example?
Yah, the SMP stuff works the same in a vkernel as it does in a real
kernel. If anything, the vkernel is even more sensitive to conflicts
since vkernel 'cpus' are threads on the real system and can wind up
being scheduled as time-share (for example, booting a 4-cpu vkernel
on a single-cpu platform).
-Matt
Matthew Dillon
<dillon@backplane.com>
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