Re: [PATCH -V3 2/4] powerpc/kvm: Contiguous memory allocator based hash page table allocation

On 03.07.2013, at 00:28, Benjamin Herrenschmidt wrote:

On Tue, 2013-07-02 at 17:12 +0200, Alexander Graf wrote:

quoted

Is CMA a mandatory option in the kernel? Or can it be optionally=20
disabled? If it can be disabled, we should keep the preallocated=20
fallback case around for systems that have CMA disabled.

=20
Why ? More junk code to keep around ...
=20
If CMA is disabled, we can limit ourselves to dynamic allocation (with
limitation to 16M hash table).

Aneesh adds a requirement for CMA on the KVM option in Kconfig, so all =
is well.


Alex