Re: [Xen-devel] [PATCH] x86/VMX: don't risk corrupting host CR4

2018-03-11 Thread Tian, Kevin
> From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: Friday, March 9, 2018 10:19 PM > > Instead of "syncing" the live value to what mmu_cr4_features has, make > sure vCPU-s run with the value most recently loaded into %cr4, such that > after the next VM exit we continue to run with the intended

Re: [Xen-devel] [PATCH] x86/VMX: don't risk corrupting host CR4

2018-03-09 Thread Jan Beulich
>>> On 09.03.18 at 15:35, wrote: > On 09/03/18 14:18, Jan Beulich wrote: >> Instead of "syncing" the live value to what mmu_cr4_features has, make >> sure vCPU-s run with the value most recently loaded into %cr4, such that >> after the next VM exit we continue to run with the intended value rather

Re: [Xen-devel] [PATCH] x86/VMX: don't risk corrupting host CR4

2018-03-09 Thread Andrew Cooper
On 09/03/18 14:18, Jan Beulich wrote: > Instead of "syncing" the live value to what mmu_cr4_features has, make > sure vCPU-s run with the value most recently loaded into %cr4, such that > after the next VM exit we continue to run with the intended value rather > than a possibly stale one. > > Signe