Re: [Xen-devel] [PATCH v4 0/5] [PATCH v3 0/5] Improve non-"safe" MSR access failure handling

2016-03-14 Thread Boris Ostrovsky
On 03/12/2016 01:08 PM, Andy Lutomirski wrote: Setting CONFIG_PARAVIRT=y has an unintended side effect: it silently turns all rdmsr and wrmsr operations into the safe variants without any checks that the operations actually succeed. With CONFIG_PARAVIRT=n, unchecked MSR failures OOPS and

Re: [Xen-devel] [PATCH v4 0/5] [PATCH v3 0/5] Improve non-"safe" MSR access failure handling

2016-03-14 Thread Boris Ostrovsky
On 03/12/2016 01:08 PM, Andy Lutomirski wrote: Setting CONFIG_PARAVIRT=y has an unintended side effect: it silently turns all rdmsr and wrmsr operations into the safe variants without any checks that the operations actually succeed. With CONFIG_PARAVIRT=n, unchecked MSR failures OOPS and