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From: | Ivan Warren |
Subject: | Re: Problems with Debian PowerPC Big-Endian Host System |
Date: | Fri, 7 May 2021 23:34:35 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 |
On 5/7/2021 8:21 PM, William wrote:
Hello,I have an IBM POWER7 server with Debian-10.0-powerpc (big-endian) and qemu-system-x86 1:5.2+dfsg-10 powerpc installed on it. It's an standalone system (without HMC). I'm facing issues to set up memory higher than 2047MB on guest machines.Command "qemu-system-x86_64 -machine type=q35 -m 2048" returns "at most 2047 MB RAM can be simulated" and with parameters "-enable-kvm or accel=kvm" it returns "invalid accelerator kvm". Kvm module is loaded.Any help would be much appreciated. Thank you. WIlliam.
William,You can only run qemu KVM when the host and guest architectures are (at least somewhat) identical. Otherwise you are stuck with TCG (aka softmmu) acceleration (architecture/Instruction set emulation) which is of course significantly slower.
--Ivan
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