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On Sun, 2012-07-08 at 07:19 +0800, wdk@moriah wrote: |
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> if I try and use qemu-386 it has limited cmd line options according to -h, and barfs on any of the normal options such as -cdrom - hence my feeling its missing a wrapper. |
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> |
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> thanks, might have to do git to see if its different. |
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> BillK |
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> |
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> On 07/07/2012, at 22:32, walt <w41ter@×××××.com> wrote: |
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> |
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> > On 07/07/2012 07:14 AM, walt wrote: |
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> >> Qemu supplies two different binaries: one you can run as an unprivileged |
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> >> user (usually named qemu-i386 or whatever) and another that needs special |
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> >> privileges (usually named gemu-system-i386 or whatever). |
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> > |
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> > I just remembered that installing the git version actually does give you |
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> > a binary named 'qemu' but I never understood how that relates to the other |
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> > two binaries, so I've never used that one either :) |
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> > |
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Solved - might help others ... |
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Thanks Walt for the hints. |
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Most of the gentoo/qemu guides are seriously out of date and |
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semi-useless. |
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|
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You need certain kernel features enabled, otherwise qemu will just |
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silently give you very limited set of options and basically wont run, |
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and wont tell you why. Which options ... I just turned on everything |
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with VM in it. |
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|
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You need the following in make.conf: |
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QEMU_SOFTMMU_TARGETS="i386" |
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QEMU_USER_TARGETS="i386" |
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to build x86 only |
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|
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qemu-kvm has simple script to start it up: |
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moriah qemu # cat `which qemu-kvm` |
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#!/bin/sh |
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exec /usr/bin/qemu-system-x86_64 --enable-kvm "$@" |
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moriah qemu # |
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|
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Other qemu ebuilds dont install a similar script. The qemu-user ebuild |
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installs static builds (or at least they have static in the name - why?) |
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You need to run qemu-system-i386 to start the emulator. |
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On a P3M I am using the app-emulation/qemu and app-emulation/kqemu |
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ebuilds - not sure if I need kqemu so that needs testing when I get a |
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guest installed. kqemu needs a user patch on 3.4.4 but builds and |
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inserts ok once patched. |
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The app-emulation/qemu-kvm installs but dies on a P3 when you try and |
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run it - needs a cpu with the right VM facilities. |
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Oh, and I installed from git to test ... and found it didnt have an |
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uninstall. messy! Makes one appreciate ebuilds/gentoo and devs :) |
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Part of my problem was using vmware and bochs/qemu for years and having |
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legacy ideas on whats required. |
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|
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BillK |
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