On Sun, 29 Apr 2018 09:56:37 -0500 Richard Henderson <richard.hender...@linaro.org> wrote:
> On 04/27/2018 02:01 PM, Michal Suchánek wrote: > > Is there any reason why the 64bit emulator would not run on 32bit > > system? The emulated 64bit system is .. emulated after all. > > It does run, but it requires that the 32-bit host perform double-word > arithmetic to emulate the 64-bit guest. When the 64-bit guest is > really a 32-bit guest in disguise, this carries a performance penalty. > > If we ever stop caring about 32-bit hosts, the question becomes moot. > So if I installed 32bit pc binaries and 32bit qemu instead of the x86_64 binaries on my ARM board it would be faster. Good to know if I ever try wacky experiments like that again ;-) Thanks Michal
