On 29 July 2015 at 11:03, Pavel Fedin <p.fe...@samsung.com> wrote: >> Also in light of guests with huge memory size, 512Gb gap for RAM seems too >> small, >> what are limitations of ARM64 regarding max supported physical address bits? > > 40 bits IIRC.
In hardware, implemented maximum physical address size may be anything from 32 bits to 48 bits in 4 bit steps. At least 40 and 48 bits have been implemented. A 32-bit VM has a maximum physical address size of 40 bits; a 64-bit VM has a maximum physical address size equal to the host's maximum physical address size (unless KVM chooses to constrain it further). -- PMM
