from http://git.qemu.org/?p=qemu.git;a=blob;f=target-i386/cpu.c;h=a7154af11df08f749f4980f5133cd90a4ada6bb0;hb=HEAD seem that cpumodel (core2duo,westmere,opteron_gX) have already the SEP flag.
So I think it should work out of the box, with last redhat kernel + theses cpu models (include host model). I don't known if you can test them Martin ? Only qemu64,qemu32,kvm32,kvm64 don't have sep flag, I think we could add it to them by default. (If we use an old kernel,I think that the sep flag is just filtered from guest, so qemu should start) ----- Mail original ----- De: "Alexandre DERUMIER" <[email protected]> À: "Martin Maurer" <[email protected]> Cc: [email protected] Envoyé: Vendredi 28 Juin 2013 09:34:36 Objet: Re: [pve-devel] add +sep cpu flag to allow win8 32bit installation >>Or maybe it's possible that my production server use old redhat kernel, and >>that the sep flag was filtered. https://bugzilla.redhat.com/show_bug.cgi?id=821463 Seem that is was a bug in redhat kernel which filtered the sep flag on 64bit host because of exec_shield=on. I have verified on internet, the amd opteron have this flag. So it was disabled from kvm, because if host don't have it, I think it break the qemu. I'll do tests with differents guest os, but I think it can be safe to enable +sep for all cpus models. (But we need to be sure that kernel is last redhat 6.4 kernel) ----- Mail original ----- De: "Alexandre DERUMIER" <[email protected]> À: "Martin Maurer" <[email protected]> Cc: [email protected] Envoyé: Vendredi 28 Juin 2013 09:24:08 Objet: Re: [pve-devel] add +sep cpu flag to allow win8 32bit installation >>What I need to check is with physical opteron, as I don't sep feature flag >>inside them. Or maybe it's possible that my production server use old redhat kernel, and that the sep flag was filtered. (don't have opteron on my test cluster) I don't known if a "cat /proc/cpuinfo" database is available somewhere on internet ? ----- Mail original ----- De: "Alexandre DERUMIER" <[email protected]> À: "Martin Maurer" <[email protected]> Cc: [email protected] Envoyé: Vendredi 28 Juin 2013 09:11:52 Objet: Re: [pve-devel] add +sep cpu flag to allow win8 32bit installation What I need to check is with physical opteron, as I don't sep feature flag inside them. (That should mean that we can't install a win8 32bit on an opteron). I don't known what happen if we pass the +sep flag on virtual guest cpu, if the flag don't exist on physical cpu. (maybe qemu filter it, but i'm not sure about it) ----- Mail original ----- De: "Martin Maurer" <[email protected]> À: "Alexandre DERUMIER" <[email protected]>, [email protected] Envoyé: Vendredi 28 Juin 2013 00:00:33 Objet: RE: [pve-devel] add +sep cpu flag to allow win8 32bit installation >I don't have myself tested win8 32bit, but I'll do some tests next week Just installed a win8-32 with this setting, works great so far! martin _______________________________________________ pve-devel mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
