These are the s390 patches for stack clash mitigation.
Changes since V2:
Incorporate changes from IBM to address missing functionality.
Hopefully no longer regresses Ada as we no longer define
STACK_CHECK_STATIC_BUILTIN.
Jeff
* config/s390/s390.c (MIN_UNROLL_PROBES): Define.
On 07/21/2017 07:23 AM, Andreas Krebbel wrote:
> Hi,
>
> I've used your patch as the base and applied my changes on top. The
> attached patch is the result, so it is supposed to replace your
> version. It now also supports emitting a runtime loop.
>
> It bootstraps fine but unfortunately I see
On 07/21/2017 07:23 AM, Andreas Krebbel wrote:
> Hi,
>
> I've used your patch as the base and applied my changes on top. The
> attached patch is the result, so it is supposed to replace your
> version. It now also supports emitting a runtime loop.
Thanks a ton! I'll roll your changes into the
Hi,
I've used your patch as the base and applied my changes on top. The
attached patch is the result, so it is supposed to replace your
version. It now also supports emitting a runtime loop.
It bootstraps fine but unfortunately I see an Ada regression which I
haven't tracked down yet.
> FAIL:
I don't think this patch has changed in any significant way since the V1
patch.
I have tested a slightly different version which punts stack clash
protection for very large static stack frames -- otherwise tests which
have *huge* frames will timeout, run out of memory during compilation, etc.
--
On 07/14/2017 08:29 AM, Andreas Krebbel wrote:
> On 07/11/2017 11:21 PM, Jeff Law wrote:
>> This patch adds s390 support for stack-clash mitigation.
>>
>> s390's most interesting property is that the caller allocates space for
>> the callee to save registers into.
>>
>> So much like aarch64, we
On 07/11/2017 11:21 PM, Jeff Law wrote:
> This patch adds s390 support for stack-clash mitigation.
>
> s390's most interesting property is that the caller allocates space for
> the callee to save registers into.
>
> So much like aarch64, we start with a very conservative assumption about
> the
This patch adds s390 support for stack-clash mitigation.
s390's most interesting property is that the caller allocates space for
the callee to save registers into.
So much like aarch64, we start with a very conservative assumption about
the offset between SP and the most recent stack probe. As
