Re:Re: debian bootup hangs on qemu-system-mips64el
lixing <[email protected]>
| Newsgroups | gmane.comp.emulators.qemu.user,gmane.linux.debian.ports.mips,gmane.linux.ports.mips |
|---|---|
| Message-ID | <[email protected]> |
Yes, Loongson implemented VZ hardware support for KVM based onf mips64r2 lixing [email protected] 13699171092 电子名片新出VIP模板啦，快来体验>> 扫一扫, 快速添加名片到手机 -------------------------------------------------------------------------------- ----The following is the content of the forwarded email---- From：Jun Sun <[email protected]> To：Jun Sun <[email protected]>,qemu-discuss <[email protected]>,debian-mips <[email protected]>,linux-mips <[email protected]>,lixing <[email protected]> Date：2020-01-13 10:14:12 Subject：Re: debian bootup hangs on qemu-system-mips64el See below. On Sun, Jan 12, 2020 at 11:58 AM Aurelien Jarno wrote: > > Hi, > > On 2020-01-12 11:34, Jun Sun wrote: > > Are you sure QEMU/MIPS does not support SMP? Below link written in > > 2016 clearly shows something was working then. > > > > https://www.mips.com/blog/how-to-run-smp-linux-in-qemu-on-a-mips64-release-6-cpu/ > > It's not supported for the malta/mips64r2 combination you are trying to > use. It's clearly possible that it is supported for mips64r6, but it's a > different instruction set, so you can't run a standard Debian > distribution on it. > How do I specify mips64r6 cpu to start qemu? A simple cpu listing below shows no such CPU. If mips64r6 is indeed supported with SMP, I would think mips64r2 userland should run fine. $ qemu-system-mips64el -cpu ? MIPS '4Kc' MIPS '4Km' MIPS '4KEcR1' MIPS '4KEmR1' MIPS '4KEc' MIPS '4KEm' MIPS '24Kc' MIPS '24KEc' MIPS '24Kf' MIPS '34Kf' MIPS '74Kf' MIPS 'M14K' MIPS 'M14Kc' MIPS 'P5600' MIPS 'mips32r6-generic' MIPS 'R4000' MIPS 'VR5432' MIPS '5Kc' MIPS '5Kf' MIPS '20Kc' MIPS 'MIPS64R2-generic' MIPS '5KEc' MIPS '5KEf' MIPS 'I6400' MIPS 'Loongson-2E' MIPS 'Loongson-2F' MIPS 'mips64dspr2' > > Also, as Lixing mentioned in our private exchange, there is SMP > > support for loongson. Lixing, I assume loongson SMP support is > > already merged in QEMU repo, right? Can you point out the relevant > > source code directories? > > Lixing mentioned virtualization. In that case it is indeed supported > like on other mips64r5 CPUs. For that you need to use add the -enable-kvm > option to the qemu command. I'm not sure if loongson support has to be kvm. Maybe Lixing can clarify.