Re: [Xen-devel] xl: insufficient ballooning when starting certain guests

2015-10-29 Thread Jan Beulich
>>> On 29.10.15 at 18:01, wrote: > On Thu, Oct 29, 2015 at 10:08:02AM -0600, Jan Beulich wrote: >> >>> On 29.10.15 at 16:36, wrote: >> > What does the hypervisor do when PTs are shared but it still hits the >> > boundary? I presume the current default value never triggers such >> > situation? >>

Re: [Xen-devel] xl: insufficient ballooning when starting certain guests

2015-10-29 Thread Wei Liu
On Thu, Oct 29, 2015 at 10:08:02AM -0600, Jan Beulich wrote: > >>> On 29.10.15 at 16:36, wrote: > > On Tue, Sep 22, 2015 at 03:41:47AM -0600, Jan Beulich wrote: > >> it looks as if changes in the memory requirements of the hypervisor > >> have pushed things over the border of not working anymore w

Re: [Xen-devel] xl: insufficient ballooning when starting certain guests

2015-10-29 Thread Jan Beulich
>>> On 29.10.15 at 16:36, wrote: > On Tue, Sep 22, 2015 at 03:41:47AM -0600, Jan Beulich wrote: >> it looks as if changes in the memory requirements of the hypervisor >> have pushed things over the border of not working anymore when >> passing through a device and not sharing page tables (between

Re: [Xen-devel] xl: insufficient ballooning when starting certain guests

2015-10-29 Thread Wei Liu
Sorry for the late reply. This fell through the crack. On Tue, Sep 22, 2015 at 03:41:47AM -0600, Jan Beulich wrote: > Tools maintainers, > > it looks as if changes in the memory requirements of the hypervisor > have pushed things over the border of not working anymore when > passing through a dev

[Xen-devel] xl: insufficient ballooning when starting certain guests

2015-09-22 Thread Jan Beulich
Tools maintainers, it looks as if changes in the memory requirements of the hypervisor have pushed things over the border of not working anymore when passing through a device and not sharing page tables (between VT-d and EPT, or unconditionally on AMD). Since this has always been a latent issue (a