On Thu, Apr 30, 2020 at 09:44:20PM +0100, Hongyan Xia wrote: > From: Hongyan Xia <hongy...@amazon.com> > > Also add a helper function to retrieve it. Change arch_mfn_in_direct_map > to check this option before returning. > > This is added as a boot command line option, not a Kconfig. We do not > produce different builds for EC2 so this is not introduced as a > compile-time configuration.
Having a Kconfig will probably allow the compiler to eliminate dead code. This is not asking you to do the work, someone can come along and adjust arch_has_directmap easily. Wei.
