linux-kernel - RE: [patch 0/6] x86/fpu: Preparatory changes for guest AMX support

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Message-ID: <BN9PR11MB52761C38E5A664D21960D1858C759@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Tue, 14 Dec 2021 06:50:56 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
CC:     Jing Liu <jing2.liu@...ux.intel.com>,
        "Zhong, Yang" <yang.zhong@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "Nakajima, Jun" <jun.nakajima@...el.com>
Subject: RE: [patch 0/6] x86/fpu: Preparatory changes for guest AMX support

> From: Thomas Gleixner <tglx@...utronix.de>
> Sent: Tuesday, December 14, 2021 10:50 AM
> 
> Folks,
> 
> this is a follow up to the initial sketch of patches which got picked up by
> Jing and have been posted in combination with the KVM parts:
> 
>    https://lore.kernel.org/r/20211208000359.2853257-1-
> yang.zhong@...el.com
> 
> This update is only touching the x86/fpu code and not changing anything on
> the KVM side.
> 
>     BIG FAT WARNING: This is compile tested only!
> 
> In course of the dicsussion of the above patchset it turned out that there
> are a few conceptual issues vs. hardware and software state and also
> vs. guest restore.

Overall this is definitely a good move and also help simplify the
KVM side logic. 😊

Thanks
Kevin