From: Thomas Gleixner <tglx@linutronix.de>
To: "Tian, Kevin" <kevin.tian@intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>
Cc: "Liu, Jing2" <jing2.liu@intel.com>,
LKML <linux-kernel@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Arjan van de Ven <arjan@linux.intel.com>,
Jing Liu <jing2.liu@linux.intel.com>,
"seanjc@google.com" <seanjc@google.com>,
"Cooper, Andrew" <andrew.cooper3@citrix.com>,
"Bae, Chang Seok" <chang.seok.bae@intel.com>
Subject: RE: Thoughts of AMX KVM support based on latest kernel
Date: Wed, 17 Nov 2021 13:24:19 +0100 [thread overview]
Message-ID: <87tugb3r7w.ffs@tglx> (raw)
In-Reply-To: <BN9PR11MB5433D6A1368904D9B748846B8C9A9@BN9PR11MB5433.namprd11.prod.outlook.com>
Tian,
On Wed, Nov 17 2021 at 10:15, Tian, Kevin wrote:
> We are not sure whether such trick is worthwhile, since a sane
> guest shouldn't set XFD[AMX]=1 before storing the AMX state. This
> is why we want to seek SDM change to mark out that the software
> should not assume XTILEDATA is still valid when XFD[AMX]=1.
Yes, please. Anything else is just causing too much hackery for no
value.
Thanks,
tglx
next prev parent reply other threads:[~2021-11-17 12:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 13:01 Thoughts of AMX KVM support based on latest kernel Liu, Jing2
2021-11-16 12:18 ` Thomas Gleixner
2021-11-16 16:05 ` Sean Christopherson
2021-11-16 18:55 ` Thomas Gleixner
2021-11-16 19:49 ` Paolo Bonzini
2021-11-16 20:14 ` Sean Christopherson
2021-11-16 20:36 ` Thomas Gleixner
2021-11-16 22:11 ` Nakajima, Jun
2021-11-17 7:39 ` Paolo Bonzini
2021-11-16 20:12 ` Sean Christopherson
2021-11-16 23:35 ` Thomas Gleixner
2021-11-16 19:20 ` Thomas Gleixner
2021-11-17 4:52 ` Nakajima, Jun
2021-11-17 7:31 ` Paolo Bonzini
2021-11-17 10:15 ` Tian, Kevin
2021-11-17 12:24 ` Thomas Gleixner [this message]
2021-11-17 12:53 ` Paolo Bonzini
2021-11-18 23:17 ` Nakajima, Jun
2021-11-19 10:13 ` Thomas Gleixner
2021-11-19 15:41 ` Nakajima, Jun
2021-12-08 0:50 ` Rewording of Setting IA32_XFD[18] (Re: Thoughts of AMX KVM support based on latest kernel) Nakajima, Jun
2021-12-08 13:57 ` Paolo Bonzini
2021-12-10 21:53 ` Thomas Gleixner
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