Messages in this thread | | | Date | Fri, 03 Feb 2006 17:39:21 -0500 | From | Mark Lord <> | Subject | Re: [PATCH ] VMSPLIT config options (with default config fixed) |
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Jan Engelhardt wrote: > > This sort of testing reminds me of Linus's 100->1000 Hz change > ("I chose 1000 originally partly as a way to make sure that people that > assumed HZ was 100 would get a swift kick in the pants.") > > Could we also do that with VMSPLIT? > ("Let's choose VMSPLIT_2G to make sure that i386-people that assumed > PAGE_OFFSET was 0xC0000000 would get...")
Mmm.. bad idea. As much as I'd like the default to be 3GB_OPT, that would be a big impact to userspace, and there's no point in breaking everyone's machines when advanced users can just reconfig/recompile to get what they want.
>> Hm, I wonder if we could have a more fine-grained choice of the >> boundary? There are also systems around with e.g. 1.25G or 1.5G of >> main memory. >> > Maybe something like: > config VMSPLIT_1G > bool "1G/3G user/kernel split" > config VMSPLIT_X > bool "Manual split" > endchoice ...
Yes, that looks like a good idea.
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