Re: [PATCH] powerpc/mm/book3s/64: Rework page table geometry for lower memory usage

2017-05-09 Thread Balbir Singh
On Tue, 2017-05-09 at 18:05 +1000, Michael Ellerman wrote: > Recently in commit f6eedbba7a26 ("powerpc/mm/hash: Increase VA range to > 128TB") > we increased the virtual address space for user processes to 128TB by default, > and up to 512TB if user space opts in. > > This obviously required

Re: [PATCH] powerpc/mm/book3s/64: Rework page table geometry for lower memory usage

2017-05-09 Thread Aneesh Kumar K.V
On Tuesday 09 May 2017 01:35 PM, Michael Ellerman wrote: Recently in commit f6eedbba7a26 ("powerpc/mm/hash: Increase VA range to 128TB") we increased the virtual address space for user processes to 128TB by default, and up to 512TB if user space opts in. This obviously required expanding the

[PATCH] powerpc/mm/book3s/64: Rework page table geometry for lower memory usage

2017-05-09 Thread Michael Ellerman
Recently in commit f6eedbba7a26 ("powerpc/mm/hash: Increase VA range to 128TB") we increased the virtual address space for user processes to 128TB by default, and up to 512TB if user space opts in. This obviously required expanding the range of the Linux page tables. For Book3s 64-bit using hash