[XenPPC] Re: [Xen-devel] [TOOLS][RFC] xc_get_pfn_list() and getmemlist.start_pfn

[Jimi Xenidis <jimix@xxxxxxxxxxxxxx>]

On Oct 20, 2006, at 4:30 AM, Gerd Hoffmann wrote:

> Keir Fraser wrote:
> > On 20/10/06 09:01, "Gerd Hoffmann" <kraxel@xxxxxxx> wrote:
> >
> > > > domain builder. I could leave the interface just for that I  
> > > > suppose, but
> > > > equally we could fill in the initial P2M table when we allocate  
> > > > the domain's
> > > > initial memory reservation (since that hypercall returns the PFNs).
> > > Who does that hypercall btw?  Seems not to be somewhere in the
> > > xc_linux_build() code path ...
> > Everyone goes through xc_get_pfn_list() (except ia64, who are  
> > 'special' ;-).
> I want to know nevertheless.
>
> While I'm hacking the domain builder code anyway, maybe it's a good  
> time
> to change that too ;)
It is called to get the MFNs of another domain fromt he build tools


cd ./xen-unstable.hg/tools/libxc/
find . \( -name CVS -o -name SCCS \) -prune -o \! \( -name \*~ -o - 
name .#\* -o -name cscope.\* \) -type f -print0 | xargs -0 -e grep -n  
xc_get_pfn_list
./xc_core.c:89:    if ( xc_get_pfn_list(xc_handle, domid, page_array,  
0, nr_pages)
./xc_hvm_build.c:259:    if ( xc_get_pfn_list(xc_handle, dom,  
page_array, nr_pages) != nr_pages )
./xc_linux_build.c:856:    if ( xc_get_pfn_list(xc_handle, dom,  
page_array, nr_pages) != nr_pages )
./xc_linux_restore.c:283:    if (xc_get_pfn_list(xc_handle, dom, p2m,  
max_pfn) != max_pfn) {
./xc_private.c:309:static int __xc_get_pfn_list(int xc_handle,
./xc_private.c:330:        PERROR("xc_get_pfn_list: pfn_buf mlock  
failed");
./xc_private.c:340:    DPRINTF(("Ret for xc_get_pfn_list is %d\n",  
ret));
./xc_private.c:355:int xc_get_pfn_list(int xc_handle,
./xc_ptrace.c:370:        if ( xc_get_pfn_list(xc_handle, current_domid,
./xenctrl.h:525:int xc_get_pfn_list(int xc_handle, uint32_t domid,  
xen_pfn_t *pfn_buf,
./powerpc64/xc_linux_build.c:372:    DPRINTF("xc_get_pfn_list\n");
./powerpc64/xc_linux_build.c:373:    rc = xc_get_pfn_list(xc_handle,  
domid, *page_array, *nr_pages);
-JX


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