Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-21 Thread David Gibson
On Mon, Sep 21, 2015 at 10:37:28AM +0200, Greg Kurz wrote: > On Mon, 21 Sep 2015 10:26:52 +0200 > Thomas Huth wrote: > > > On 21/09/15 10:01, Greg Kurz wrote: > > > On Mon, 21 Sep 2015 12:10:00 +1000 > > > David Gibson wrote: > > > > > >> On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrot

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-21 Thread Eric Blake
On 09/21/2015 12:00 AM, Thomas Huth wrote: >>> This being said, I am not sure about the use case where a user has a hwrng >>> capable platform and wants to run guests without any hwrng support at all is >>> an appropriate default behavior... I guess we will find more users that want >>> in-kernel

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-21 Thread Greg Kurz
On Mon, 21 Sep 2015 10:26:52 +0200 Thomas Huth wrote: > On 21/09/15 10:01, Greg Kurz wrote: > > On Mon, 21 Sep 2015 12:10:00 +1000 > > David Gibson wrote: > > > >> On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrote: > >>> On Thu, 17 Sep 2015 10:49:41 +0200 > >>> Thomas Huth wrote: > >>>

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-21 Thread Thomas Huth
On 21/09/15 10:01, Greg Kurz wrote: > On Mon, 21 Sep 2015 12:10:00 +1000 > David Gibson wrote: > >> On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrote: >>> On Thu, 17 Sep 2015 10:49:41 +0200 >>> Thomas Huth wrote: >>> The PAPR interface defines a hypercall to pass high-quality h

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-21 Thread Greg Kurz
On Mon, 21 Sep 2015 12:10:00 +1000 David Gibson wrote: > On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrote: > > On Thu, 17 Sep 2015 10:49:41 +0200 > > Thomas Huth wrote: > > > > > The PAPR interface defines a hypercall to pass high-quality > > > hardware generated random numbers to gues

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-20 Thread Thomas Huth
On 21/09/15 04:10, David Gibson wrote: > On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrote: >> On Thu, 17 Sep 2015 10:49:41 +0200 >> Thomas Huth wrote: >> >>> The PAPR interface defines a hypercall to pass high-quality >>> hardware generated random numbers to guests. Recent kernels can >>>

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-20 Thread David Gibson
On Fri, Sep 18, 2015 at 11:05:52AM +0200, Greg Kurz wrote: > On Thu, 17 Sep 2015 10:49:41 +0200 > Thomas Huth wrote: > > > The PAPR interface defines a hypercall to pass high-quality > > hardware generated random numbers to guests. Recent kernels can > > already provide this hypercall to the gues

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-20 Thread David Gibson
On Thu, Sep 17, 2015 at 10:49:41AM +0200, Thomas Huth wrote: > The PAPR interface defines a hypercall to pass high-quality > hardware generated random numbers to guests. Recent kernels can > already provide this hypercall to the guest if the right hardware > random number generator is available. Bu

Re: [Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-18 Thread Greg Kurz
On Thu, 17 Sep 2015 10:49:41 +0200 Thomas Huth wrote: > The PAPR interface defines a hypercall to pass high-quality > hardware generated random numbers to guests. Recent kernels can > already provide this hypercall to the guest if the right hardware > random number generator is available. But in

[Qemu-devel] [PATCH v4] ppc/spapr: Implement H_RANDOM hypercall in QEMU

2015-09-17 Thread Thomas Huth
The PAPR interface defines a hypercall to pass high-quality hardware generated random numbers to guests. Recent kernels can already provide this hypercall to the guest if the right hardware random number generator is available. But in case the user wants to use another source like EGD, or QEMU is r