Date: Mon, 15 Apr 2013 12:54:50 +0800 From: Julian Elischer <julian@freebsd.org> To: Neel Natu <neel@freebsd.org> Cc: svn-src-projects@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r249493 - projects/bhyve_svm/sys/amd64/vmm/amd Message-ID: <516B881A.5000000@freebsd.org> In-Reply-To: <201304150416.r3F4GDOQ062967@svn.freebsd.org> References: <201304150416.r3F4GDOQ062967@svn.freebsd.org>
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On 4/15/13 12:16 PM, Neel Natu wrote: > Author: neel > Date: Mon Apr 15 04:16:12 2013 > New Revision: 249493 > URL: http://svnweb.freebsd.org/changeset/base/249493 > > Log: > Add a Cliff Notes version of the purpose and contents of the VMCB. > > Requested by: julian thanks! others take note! > > Modified: > projects/bhyve_svm/sys/amd64/vmm/amd/vmcb.c > > Modified: projects/bhyve_svm/sys/amd64/vmm/amd/vmcb.c > ============================================================================== > --- projects/bhyve_svm/sys/amd64/vmm/amd/vmcb.c Mon Apr 15 03:09:59 2013 (r249492) > +++ projects/bhyve_svm/sys/amd64/vmm/amd/vmcb.c Mon Apr 15 04:16:12 2013 (r249493) > @@ -40,6 +40,16 @@ __FBSDID("$FreeBSD$"); > #include "vmcb.h" > > /* > + * The VMCB aka Virtual Machine Control Block is a 4KB aligned page > + * in memory that describes the virtual machine. > + * > + * The VMCB contains: > + * - instructions or events in the guest to intercept > + * - control bits that modify execution environment of the guest > + * - guest processor state (e.g. general purpose registers) > + */ > + > +/* > * Initialize SVM h/w context i.e. the VMCB control and saved state areas. > */ > int > >
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