Re: random(4) and VMs

2018-09-19 Thread Theodore Y. Ts'o
On Tue, Sep 18, 2018 at 01:00:31PM -0400, Sandy Harris wrote: > Solutions have been proposed by various people. If I understand them > right, Ted Ts'o suggests modifying the boot loader to provide some > entropy & John Denker suggests that every machine should be > provisioned with some entropy in

Re: random(4) and VMs

2018-09-18 Thread Sandy Harris
On Tue, Sep 18, 2018 at 7:03 PM John Denker wrote: > > Is a fix that only deals with a subset of the problem worth > > considering? Just patch the VM support code so that any time a VM is > > either booted or re-started after a save, the host system drops in > > some entropy, ... > > Good

Re: random(4) and VMs

2018-09-18 Thread John Denker
On 09/18/2018 10:00 AM, Sandy Harris wrote: > Is a fix that only deals with a subset of the problem worth > considering? Just patch the VM support code so that any time a VM is > either booted or re-started after a save, the host system drops in > some entropy, This looks relatively easy to do,

random(4) and VMs

2018-09-18 Thread Sandy Harris
Getting the random driver well initialised early enough is a hard problem, at least on some machines. Solutions have been proposed by various people. If I understand them right, Ted Ts'o suggests modifying the boot loader to provide some entropy & John Denker suggests that every machine should be