Messages in this thread | | | Date | Wed, 13 Jun 2007 12:03:34 +0200 | From | Peter Zijlstra <> | Subject | [patch 0/3] no MAX_ARG_PAGES -v2 |
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This patch-set aims at removing the current limit on argv+env space aka. MAX_ARG_PAGES.
The new mm is created before the binfmt code runs, the stack is placed at the highest address supported by that architecture.
The argv+env data is then copied from the old mm into the new mm (which is inactive at that time - this introduces some cache coherency issues).
Then we run the binfmt code, which will compute the final stack address. The existing stack will be moved downwards (or upwards on PA-RISC) to the desired place.
This 'trick' heavily relies on the MMU, so for no-MMU archs we stay with the old approach.
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Plenty of changes all around, changes listed in the individual patches. We hope to have addressed all issues raised.
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