On Thu, Oct 12, 2006 at 04:58:16PM +0200, Philippe Berthault wrote:
> The maxMem and memory fields of the virDomainInfo structure are false on
> IA64 systems.
>
> The problem is in xen_internal.c at lines 1530,1531:
> info->memory = XEN_GETDOMAININFO_TOT_PAGES(dominfo) * 4;
> info->maxMem = XEN_GETDOMAININFO_MAX_PAGES(dominfo) * 4;
Fixed in CVS:
paphio:~/libvirt/src -> grep kb_per_pages xen_internal.c
static int kb_per_pages = 0;
if (kb_per_pages == 0) {
kb_per_pages = sysconf(_SC_PAGESIZE) / 1024;
if (kb_per_pages <= 0)
kb_per_pages = 4;
info->memory = XEN_GETDOMAININFO_TOT_PAGES(dominfo) * kb_per_pages;
info->maxMem = XEN_GETDOMAININFO_MAX_PAGES(dominfo) * kb_per_pages;
paphio:~/libvirt/src ->
if you're a developper, use the CVS version or the CVS snapshots, it helps :-)
> It's assumed that page size is 4 KB (* 4) but this isn't correct on a
> IA64 system where the page size is variable.
>
> I haven't checked but I suppose this bug exists also with the
> virDomainGetMaxMemory and virDomainSetMaxMemory functions.
virDomainGetMaxMemory version from xen_internals.c had to be fixed too
I forgot about that one, for xenHypervisorSetMaxMemory() it's fine since
the hypercall takes directly the size in kilobytes:
uint64_t max_memkb;
thanks for raising this again though, there was still a bug around :-)
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard@xxxxxxxxxx | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/