Messages in this thread | | | Date | Sun, 24 Feb 2008 08:22:02 +0100 | From | Ingo Molnar <> | Subject | Re: [patch 1/2] x86,fpu: split FPU state from task struct |
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* Suresh Siddha <suresh.b.siddha@intel.com> wrote:
> Split the FPU save area from the task struct. This allows easy > migration of FPU context, and it's generally cleaner. It also allows > the following two optimizations: > > 1) only allocate when the application actually uses FPU, so in the > first lazy FPU trap. This could save memory for non-fpu using apps. > Next patch does this lazy allocation. > > 2) allocate the right size for the actual cpu rather than 512 bytes > always. Patches enabling xsave/xrstor support (coming shortly) will > take advantage of this.
i like the concept. Please clean up the issues found by Christoph and please also base it against x86.git#testing [this is clear 2.6.26 material and there are already some changes in this area]:
http://people.redhat.com/mingo/x86.git/README
Ingo
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