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Re: User-space device drivers: ``interface to interrupt hardware''


From: Samuel Thibault
Subject: Re: User-space device drivers: ``interface to interrupt hardware''
Date: Thu, 20 Sep 2007 18:27:26 +0200
User-agent: Mutt/1.5.12-2006-07-14

Thomas Schwinge, le Thu 20 Sep 2007 17:21:03 +0200, a écrit :
> On Wed, Sep 19, 2007 at 02:22:00PM +0200, Ludovic Courtès wrote:
> > Thomas Schwinge <address@hidden> writes:
> > > What is Minix doing?
> > 
> > Minix 3 uses user-level drivers.  In some cases, when a transient
> > failure affects a driver process, it may be restarted.
> 
> That I already knew about Minix.
> 
> My question was rather if someone already knows the details about how the
> Minix microkernel handles hardware interrupts, how they are passed to
> user-space servers and how they are being handled there.

The micro-kernel sends a HARD_INTR message to the user-space servers.

Samuel




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