12 Jan
2007
12 Jan
'07
2:04 p.m.
Daniel Veillard a écrit :
I think Xen just returns -1 when the field is uninitialized, probably meaning 'all physical memory'. Once you use "xm mem-max 0 ..." then it consider the Dom0 domain constrained, but not before. And since there are machine where it's possible to hot plug new memory this is a way to not poll the current physical memory, a bit weird but that can be understood.
The signed value -1, "casted" in C/C++ in unsigned integer, gives the value 4294967295. The Max memory value returned by virsh is 4294967292. There is a small difference (3), so the value returned by Xen can't be -1.