Re: [Xen-devel] [RFC] Linux save_fl PVOP for Xen

2015-04-17 Thread David Vrabel
On 16/04/15 19:40, Andrew Cooper wrote: > Having recently got some Broadwell hardware, our automatic test system > discovered that 32bit PV guests would reliably blow up while attempting > to boot. > > It turns out that the save_fl PVOP is at fault. The comment is false, > as setup_smap() uses it

[Xen-devel] [RFC] Linux save_fl PVOP for Xen

2015-04-16 Thread Andrew Cooper
Having recently got some Broadwell hardware, our automatic test system discovered that 32bit PV guests would reliably blow up while attempting to boot. It turns out that the save_fl PVOP is at fault. The comment is false, as setup_smap() uses it to check that the Alignment Check flag is clear. A