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
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 performance impact one can expect.
https://lists.llvm.org/pipermai
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