On Wed, 19 Dec 2018, Richard Earnshaw (lists) wrote:
> On 19/12/2018 17:17, Richard Biener wrote:
> > On Wed, 19 Dec 2018, Florian Weimer wrote:
> >
> >> * Peter Bergner:
> >>
> >>> On 12/19/18 7:59 AM, Florian Weimer wrote:
> * Richard Biener:
>
> > Sure, if we'd ever deploy this i
On 19/12/2018 17:17, Richard Biener wrote:
> On Wed, 19 Dec 2018, Florian Weimer wrote:
>
>> * Peter Bergner:
>>
>>> On 12/19/18 7:59 AM, Florian Weimer wrote:
* Richard Biener:
> Sure, if we'd ever deploy this in production placing this in the
> TCB for glibc targets might be be
On Wed, 19 Dec 2018, Richard Earnshaw (lists) wrote:
> On 19/12/2018 11:25, Richard Biener wrote:
> > On Tue, 18 Dec 2018, Richard Earnshaw (lists) wrote:
> >
> >> On 18/12/2018 15:36, Richard Biener wrote:
> >>>
> >>> Hi,
> >>>
> >>> in the past weeks I've been looking into prototyping both spec
On Wed, 19 Dec 2018, Florian Weimer wrote:
> * Peter Bergner:
>
> > On 12/19/18 7:59 AM, Florian Weimer wrote:
> >> * Richard Biener:
> >>
> >>> Sure, if we'd ever deploy this in production placing this in the
> >>> TCB for glibc targets might be beneifical. But as said the
> >>> current implem
* Peter Bergner:
> On 12/19/18 7:59 AM, Florian Weimer wrote:
>> * Richard Biener:
>>
>>> Sure, if we'd ever deploy this in production placing this in the
>>> TCB for glibc targets might be beneifical. But as said the
>>> current implementation was just an experiment intended to be
>>> maximum p
On 19/12/2018 11:25, Richard Biener wrote:
> On Tue, 18 Dec 2018, Richard Earnshaw (lists) wrote:
>
>> On 18/12/2018 15:36, Richard Biener wrote:
>>>
>>> Hi,
>>>
>>> in the past weeks I've been looking into prototyping both spectre V1
>>> (speculative array bound bypass) diagnostics and mitigatio
On 12/19/18 7:59 AM, Florian Weimer wrote:
> * Richard Biener:
>
>> Sure, if we'd ever deploy this in production placing this in the
>> TCB for glibc targets might be beneifical. But as said the
>> current implementation was just an experiment intended to be
>> maximum portable. I suppose the dy
* Richard Biener:
> Sure, if we'd ever deploy this in production placing this in the
> TCB for glibc targets might be beneifical. But as said the
> current implementation was just an experiment intended to be
> maximum portable. I suppose the dynamic loader takes care
> of initializing the TCB d
On Wed, 19 Dec 2018, Florian Weimer wrote:
> * Richard Biener:
>
> > On Wed, 19 Dec 2018, Florian Weimer wrote:
> >
> >> * Richard Biener:
> >>
> >> > The cost is probably target dependent - on x86 it's simply a $fs based
> >> > load/store.
> >>
> >> Do you need to reserve something in the TCB
* Richard Biener:
> On Wed, 19 Dec 2018, Florian Weimer wrote:
>
>> * Richard Biener:
>>
>> > The cost is probably target dependent - on x86 it's simply a $fs based
>> > load/store.
>>
>> Do you need to reserve something in the TCB for this?
>
> No idea. But I figured using TLS with the patch o
On Wed, 19 Dec 2018, Florian Weimer wrote:
> * Richard Biener:
>
> > The cost is probably target dependent - on x86 it's simply a $fs based
> > load/store.
>
> Do you need to reserve something in the TCB for this?
No idea. But I figured using TLS with the patch only works when
optimizing and n
* Richard Biener:
> The cost is probably target dependent - on x86 it's simply a $fs based
> load/store.
Do you need to reserve something in the TCB for this?
Thanks,
Florian
On Tue, 18 Dec 2018, Richard Earnshaw (lists) wrote:
> On 18/12/2018 15:36, Richard Biener wrote:
> >
> > Hi,
> >
> > in the past weeks I've been looking into prototyping both spectre V1
> > (speculative array bound bypass) diagnostics and mitigation in an
> > architecture independent manner to
On Tue, 18 Dec 2018, Jeff Law wrote:
> On 12/18/18 8:36 AM, Richard Biener wrote:
> >
> > Hi,
> >
> > in the past weeks I've been looking into prototyping both spectre V1
> > (speculative array bound bypass) diagnostics and mitigation in an
> > architecture independent manner to assess feasabil
On 18/12/2018 15:36, Richard Biener wrote:
>
> Hi,
>
> in the past weeks I've been looking into prototyping both spectre V1
> (speculative array bound bypass) diagnostics and mitigation in an
> architecture independent manner to assess feasability and some kind
> of upper bound on the performanc
On 12/18/18 8:36 AM, Richard Biener wrote:
>
> Hi,
>
> in the past weeks I've been looking into prototyping both spectre V1
> (speculative array bound bypass) diagnostics and mitigation in an
> architecture independent manner to assess feasability and some kind
> of upper bound on the performanc
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