Date: Mon, 14 Jul 2008 06:47:16 GMT From: Julian Elischer <julian@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 145196 for review Message-ID: <200807140647.m6E6lGu9047687@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=145196 Change 145196 by julian@julian_trafmon1 on 2008/07/14 06:47:13 Small tidyings Affected files ... .. //depot/projects/vimage/porting_to_vimage.txt#5 edit Differences ... ==== //depot/projects/vimage/porting_to_vimage.txt#5 (text+ko) ==== @@ -1,4 +1,9 @@ +July 13 2008 +Julian Elischer + +=================== Vimage: what is it? +=================== Vimage is a framework in the BSD kernel which allows a co-operating module to present multiple instances of itself so that it can participate @@ -72,7 +77,9 @@ Details: -(temp. for module FOO add a definition for VNET_MOD_FOO in sys/vimage.h) +temp. note: for module FOO add a definition for VNET_MOD_FOO in sys/vimage.h. +Thos will eventually be dynamically assigned. + For now these instructions refer mainly to VNET and not VCPU etc. Symbols defined in other modules that have been virtualised will have been @@ -156,9 +163,6 @@ routing tables for THIS virtual machine. (cute eh?) (of course that won't work for core dumps). (XXX *needs thought *) - - - As example of virtualising a dummy module named the FOO module the following code might be added to a special vfoo.h or at least to the exisitng foo.h file: @@ -195,8 +199,6 @@ functions are defined for the module. The Module will call these when a new virtual machine is created or destroyed. The constructor must be called once for the base machine when the system is booted, even when VIMAGE is not defined. - - ==================== in module foo.c ====== #include "opt_vimage.h" [...] @@ -251,7 +253,7 @@ { INIT_VNET_FOO(curvnet); /* Add this at the front */ - V_foo_counter++; /* add "V_" to teh front */ + V_foo_counter++; /* add "V_" to the front of the symbol */ [...] V_foo_barx.mumble = V_foo_counter; /* and here too */ [...]
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