> -Original Message-
> From: Andrew Cooper [mailto:am...@hermes.cam.ac.uk] On Behalf Of
> Andrew Cooper
> Sent: 23 January 2017 09:15
> To: Paul Durrant ; xen-de...@lists.xenproject.org
> Cc: Ian Jackson ; Jennifer Herbert
> ; Daniel De Graaf ;
> Wei Liu ; Jan Beulich
> Subject: Re: [PATCH
On 20/01/2017 15:02, Paul Durrant wrote:
>
>>> +if ( !rc &&
>>> + !copy_buf_to_guest(bufs, nr_bufs, 0, &op, sizeof(op)) )
>> Do all ops need a copyback? If they do, this is fine. If not, it would
>> be better to have a copyback boolean which subops set as necessary.
> I can restrict c
Daniel De Graaf
> Subject: Re: [Xen-devel] [PATCH v4 1/8] public / x86: Introduce
> __HYPERCALL_dm_op...
>
> >>> On 20.01.17 at 17:20, wrote:
> >> From: Jan Beulich [mailto:jbeul...@suse.com]
> >> Sent: 20 January 2017 16:18
> >> >>> On 1
>>> On 20.01.17 at 17:20, wrote:
>> From: Jan Beulich [mailto:jbeul...@suse.com]
>> Sent: 20 January 2017 16:18
>> >>> On 17.01.17 at 18:29, wrote:
>> > +#ifndef __XEN_PUBLIC_HVM_DM_OP_H__
>> > +#define __XEN_PUBLIC_HVM_DM_OP_H__
>> > +
>> > +#if defined(__XEN__) || defined(__XEN_TOOLS__)
>> > +
>>> On 17.01.17 at 18:29, wrote:
> +static bool copy_buf_from_guest(xen_dm_op_buf_t bufs[],
> +unsigned int nr_bufs, void *dst,
> +unsigned int idx, size_t dst_size)
> +{
> +size_t size = min_t(size_t, dst_size, bufs[idx].size);
>
> -Original Message-
> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: 20 January 2017 16:18
> To: Paul Durrant
> Cc: Andrew Cooper ; Ian Jackson
> ; Jennifer Herbert ;
> Wei Liu ; xen-de...@lists.xenproject.org; Daniel De
> Graaf
> Subject: Re: [PATCH v4 1/8] public / x86: Introduce
On Fri, Jan 20, 2017 at 03:59:22PM +, Paul Durrant wrote:
> > -Original Message-
> [snip]
> > > +
> > > +va_start(args, nr_bufs);
> > > +for (idx = 0; idx < nr_bufs; idx++)
> >
> > Coding style.
>
> Ah, yes.
>
> >
> > > +
> > > +int compat_dm_op(domid_t domid,
> > > +
> -Original Message-
[snip]
> > +
> > +va_start(args, nr_bufs);
> > +for (idx = 0; idx < nr_bufs; idx++)
>
> Coding style.
Ah, yes.
>
> > +
> > +int compat_dm_op(domid_t domid,
> > + unsigned int nr_bufs,
> > + COMPAT_HANDLE_PARAM(compat_dm_op_buf
On Tue, Jan 17, 2017 at 05:29:49PM +, Paul Durrant wrote:
> ...as a set of hypercalls to be used by a device model.
>
> As stated in the new docs/designs/dm_op.markdown:
>
> "The aim of DMOP is to prevent a compromised device model from
> compromising domains other then the one it is associat
> -Original Message-
> From: Andrew Cooper
> Sent: 20 January 2017 14:35
> To: Paul Durrant ; xen-de...@lists.xenproject.org
> Cc: Ian Jackson ; Jennifer Herbert
> ; Daniel De Graaf ;
> Wei Liu ; Jan Beulich
> Subject: Re: [PATCH v4 1/8] public / x86: Introduce __HYPERCALL_dm_op...
>
> On
On 17/01/17 17:29, Paul Durrant wrote:
> ...as a set of hypercalls to be used by a device model.
>
> As stated in the new docs/designs/dm_op.markdown:
>
> "The aim of DMOP is to prevent a compromised device model from
> compromising domains other then the one it is associated with. (And is
> theref
> -Original Message-
> From: Paul Durrant [mailto:paul.durr...@citrix.com]
> Sent: 17 January 2017 17:30
> To: xen-de...@lists.xenproject.org
> Cc: Paul Durrant ; Ian Jackson
> ; Jennifer Herbert ;
> Daniel De Graaf ; Wei Liu ;
> Jan Beulich ; Andrew Cooper
>
> Subject: [PATCH v4 1/8] publ
On 01/17/2017 12:29 PM, Paul Durrant wrote:
...as a set of hypercalls to be used by a device model.
As stated in the new docs/designs/dm_op.markdown:
"The aim of DMOP is to prevent a compromised device model from
compromising domains other then the one it is associated with. (And is
therefore l
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