Re: [Xen-devel] [PATCH v6 1/6] livepatch: Disallow applying after an revert

2016-09-21 Thread Ross Lagerwall
On 09/16/2016 04:29 PM, Konrad Rzeszutek Wilk wrote: On general this is unhealthy - as the payload's .bss (definitly) or .data (maybe) will be modified once the payload is running. Doing an revert and then re-applying the payload with a non-pristine .bss or .data can lead to unforseen

Re: [Xen-devel] [PATCH v6 1/6] livepatch: Disallow applying after an revert

2016-09-19 Thread Jan Beulich
>>> On 16.09.16 at 17:29, wrote: > On general this is unhealthy - as the payload's .bss (definitly) > or .data (maybe) will be modified once the payload is running. > > Doing an revert and then re-applying the payload with a non-pristine > .bss or .data can lead to

[Xen-devel] [PATCH v6 1/6] livepatch: Disallow applying after an revert

2016-09-16 Thread Konrad Rzeszutek Wilk
On general this is unhealthy - as the payload's .bss (definitly) or .data (maybe) will be modified once the payload is running. Doing an revert and then re-applying the payload with a non-pristine .bss or .data can lead to unforseen consequences (.bss are assumed to always contain zero value but