Messages in this thread | | | Date | Mon, 30 Apr 2007 22:11:55 -0700 | From | William Lee Irwin III <> | Subject | Re: [PATCH] [30/30] x86_64: Add missing !X86_PAE dependincy to the 2G/2G split. |
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William Lee Irwin III a ?crit : >> There's some sort of insanity going on here. Since when is 0x78000000 >> a 2GB/2GB split? Mark, dare I ask what you were thinking? That should >> be VMSPLIT_2G_OPT for 2GB laptops analogously to VMSPLIT_3G_OPT, if >> nothing else, as it's certainly not 2GB/2GB.
On Tue, May 01, 2007 at 06:57:19AM +0200, Eric Dumazet wrote: > Please could you stop saying others are insane ? > They are like you and can fail sometime. Apparently when the patch came, > nobody (including you) commented. > It's not that difficult to think about VMALLOC space (I might be wrong > about this, but I feel this explains 78000000 vs 80000000)
I'm obviously aware of vmallocspace. Read carefully:
>> a 2GB/2GB split? Mark, dare I ask what you were thinking? That should >> be VMSPLIT_2G_OPT for 2GB laptops analogously to VMSPLIT_3G_OPT, if >> nothing else, as it's certainly not 2GB/2GB.
The meaning of "for laptops" is that it's carving out a chunk of user virtualspace to use for vmallocspace in lieu of carving out a piece of the 1:1 mapping of physical memory for the same purpose.
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