Re: [Xen-devel] [PATCH RFC 31/44] x86/pv: Drop support for paging out the LDT

2018-01-24 Thread Jan Beulich
>>> On 04.01.18 at 21:21, wrote: > Windows is the only OS which pages out kernel datastructures, so chances are > good that this is a vestigial remnant of the PV Windows XP experiment. > Furthermore the implementation is incomplete; it only functions for a present > => not-present transition, rath

[Xen-devel] [PATCH RFC 31/44] x86/pv: Drop support for paging out the LDT

2018-01-04 Thread Andrew Cooper
Windows is the only OS which pages out kernel datastructures, so chances are good that this is a vestigial remnant of the PV Windows XP experiment. Furthermore the implementation is incomplete; it only functions for a present => not-present transition, rather than a present => read/write transition