On 17/12/2019 18:07, Brooks Davis wrote:
On Tue, Dec 17, 2019 at 01:28:20PM -0500, Pedro Giffuni wrote:
On 16/12/2019 23:42, Cy Schubert wrote:
In message <201912162355.xbgntuq6078...@repo.freebsd.org>, "Pedro F.
Giffuni" w
rites:
Author: pfg
Date: Mon Dec 16 23:55:30 2019
New Revision: 355828
URL: https://svnweb.freebsd.org/changeset/base/355828
Log:
Double the size of ARG_MAX on LP64 platforms.
As modern software keeps growing in size, we get requests to update the
value of ARG_MAX in order to link the resulting object files. Other OSs
have much higher values but Increasiong ARG_MAX has a multiplied effect on
KVA, so just bumping this value is dangerous in some archs like ARM32 that
can exhaust KVA rather easily.
While it would be better to have a unique value for all archs, other OSs
(Illumos in partidular) can have different ARG_MAX limits depending on the
platform, For now we want to be really conservative so we are avoidng
the change on ILP32 and in the alternative case we only double it since tha
t
seems to work well enough for recent Code Aster.
I was planning to bump the _FreeBSD_version but it was bumped recently
(r355798) so we can reuse the 1300068 value for this change.
This doesn't seem right. Each bump should be for a distinct change and
documented as such.
TBH, it is just not worth it: this change will currently benefit only
one port (french/aster) and the update won't be committed until after
the MFC is done.
An MFC is a quite long-term solution. If merged to 11 and 12 then any
workarounds can't be removed until 11.3 and 12.1 are EOL since we'll be
building packages there until that point.
Yes. I am planning to MFC only to 12-stable as 11-stable may not be
worth bothering.
Pedro.
-- Brooks
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