Subject: Re: CVS commit: syssrc/sys/arch/arm/arm32
To: None <>
From: Jason R Thorpe <>
List: tech-kern
Date: 10/18/2001 12:12:09
On Thu, Oct 18, 2001 at 07:14:31PM +0100, Richard Earnshaw wrote:

 > But that doesn't solve the critical problem that for a given pmap we can't 
 > tell if the pmap is physically shared with another process (to know this, 
 > you need to know the proc it is part of); if it is, and we remove the 
 > page0 entry, then we loose the whole system.

Well, there is a reference count mechanism in the pmap subsystem...
pmap_reference() and pmap_destroy() frob it.

        -- Jason R. Thorpe <>