Messages in this thread | | | Subject | Re: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction abstraction | From | Benjamin Herrenschmidt <> | Date | Thu, 19 Jun 2008 17:20:31 +1000 |
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> Which architecture are you interested in? If it isn't x86, you can > probably get anything past Linus ;) > > I'll do some measurements to see what effect the batchable > ptep_set_wrprotect() has on native. If it's significant, I'll propose > making it conditional on CONFIG_PARAVIRT.
Oh, I mostly think about powerpc, I just wondered if I could re-use your new stuff in that context. Mostly idle thoughts at this stage, I haven't looked seriously.
I have an old patch set to batch forks (and mprotect etc...) TLB invalidations (which is what I really want to batch on powerpc, more than the actual PTE changes) that involves subtle changes to the batching mechanisms etc... but it has issues and would need to be reworked before merging.
It's something that's been in the back of my mind or the bottom of my TODO list for some time, but I never quite found the bandwidth to go back to it.
Cheers, Ben.
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