Le 27/06/2018 à 15:33, Philippe Mathieu-Daudé a écrit : > On 06/27/2018 06:09 AM, Thomas Huth wrote: >> On 27.06.2018 10:52, Gerd Hoffmann wrote: >>> Hi, >>> >>>>> Is QEMU still useful on 32-bit hosts? Honest question! >>>> >>>> I guess it depends on what 32-bit hosts you consider. If you look at only >>>> x86 vs. x86_64 then probably x86 is not that important any more but for >>>> some >>>> embedded systems/SoCs 32bit might still be common and QEMU useful for those >>>> (also as host not only emulated). >>> >>> Well. I've used kvm with an 32bit arm soc (cubietruck). It's very >>> slow. And all the arm architecture improvements to support kvm better >>> are for aarch64 only. >>> >>>> Another option might be to not support audio/hda on 32bit hosts. It's not >>>> nice either but a lot nicer than dropping support for 32bit hosts >>>> alltogether to fix a problem in device emulation. >>> >>> But it also is not useful and a waste of resources to maintain 32bit >>> host compatibility if nobody actually uses that ... >>> >>> For me testbuilds are the only reason to compile qemu for 32bit hosts. >>> Since years. >> >> Well, while that's true for you, me and likely most of us developers, >> you can not know whether this is also true for all users of qemu. Thus >> this needs to be announced first for a couple of releases so that people >> have a chance to speak up whether they still need this or not. As >> mentioned earlier, embedded devices are often still 32-bit and I know >> that there really are people who use QEMU on embedded devices. >> >> But I think we could at least announce now already that we intend to >> drop support for 32-bit hosts in the future (maybe not in 2 releases >> already, but, let's say in 2020? 2020 is already the EOL of Python 2, so >> that will rule out a bunch of other legacy hosts, too). > > linux-user is certainly widely used on ARMv6 / ARMv7. > > Known user cases: > > - run ARMv7 binaries on ARMv6 > - run armhf binaries on armel > - run x86-64 binaries on ARMv7 >
I run i386 binaries on ARMv6. I use it to run i386 printer driver on my raspberry Pi B+. Brother doesn't provide the binary for ARM, neither the source. Thanks, Laurent
