Re: [PATCH 1/3] powerpc/mm/book3s64: Make KERN_IO_START a variable

2017-08-02 Thread Balbir Singh
On Tue, Aug 1, 2017 at 8:29 PM, Michael Ellerman wrote: > Currently KERN_IO_START is defined as: > > #define KERN_IO_START (KERN_VIRT_START + (KERN_VIRT_SIZE >> 1)) > > Although it looks like a constant, both the components are actually > variables, to allow us to have a different value between

Re: [PATCH 1/3] powerpc/mm/book3s64: Make KERN_IO_START a variable

2017-08-02 Thread Aneesh Kumar K.V
Michael Ellerman writes: > Currently KERN_IO_START is defined as: > > #define KERN_IO_START (KERN_VIRT_START + (KERN_VIRT_SIZE >> 1)) > > Although it looks like a constant, both the components are actually > variables, to allow us to have a different value between Radix and > Hash with a single

[PATCH 1/3] powerpc/mm/book3s64: Make KERN_IO_START a variable

2017-08-01 Thread Michael Ellerman
Currently KERN_IO_START is defined as: #define KERN_IO_START (KERN_VIRT_START + (KERN_VIRT_SIZE >> 1)) Although it looks like a constant, both the components are actually variables, to allow us to have a different value between Radix and Hash with a single kernel. However that still requires b