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Re: CVS commit: src/sys/uvm


do you have any plan to use pg->offset of anon pages,
or is it an unnecessary side-effect?


> Module Name:  src
> Committed By: matt
> Date:         Tue Jan  4 08:26:33 UTC 2011
> Modified Files:
>       src/sys/uvm: uvm_extern.h uvm_fault.c uvm_km.c uvm_page.c
> Log Message:
> Add better color matching selecting free pages.  KM pages will now allocated
> so that VA and PA have the same color.  On a page fault, choose a physical
> page that has the same color as the virtual address.
> When allocating kernel memory pages, allow the MD to specify a preferred
> VM_FREELIST from which to choose pages.  For machines with large amounts
> of memory (> 4GB), all kernel memory to come from <4GB to reduce the amount
> of bounce buffering needed with 32bit DMA devices.
> To generate a diff of this commit:
> cvs rdiff -u -r1.167 -r1.168 src/sys/uvm/uvm_extern.h
> cvs rdiff -u -r1.178 -r1.179 src/sys/uvm/uvm_fault.c
> cvs rdiff -u -r1.106 -r1.107 src/sys/uvm/uvm_km.c
> cvs rdiff -u -r1.168 -r1.169 src/sys/uvm/uvm_page.c
> Please note that diffs are not public domain; they are subject to the
> copyright notices on the relevant files.

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