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From: | Cédric Le Goater |
Subject: | Re: [PATCH 1/2] spapr: Add SPAPR_CAP_AIL_MODE_3 for AIL mode 3 support for H_SET_MODE hcall |
Date: | Wed, 16 Feb 2022 09:25:45 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 |
If we do, we should probably change the default value for this cap based on cpu model in default_caps_with_cpu().We allegedly still support POWER7 KVM in Linux. I've never tested it and I don't know how much it's used at all. Probably should keep it working here if possible. I'll look into default_caps_with_cpu().
AFAICT, KVM has been very much broken on these sytems for a while. We still have an OPAL POWER7 system running a debian11 in the labs if you want to check. But, honestly, I wouldn't worry too much about it. POWER8 and above should be the focus. Anything below: POWER7, POWER5+, 970 work well enough under TCG. Thanks, C.
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