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Subject: RE: [PATCH v2 00/25] Enable FRED with KVM VMX
Thread-Topic: [PATCH v2 00/25] Enable FRED with KVM VMX
Thread-Index: AQHaWe9kopIyr6Xnd0e+7GE2THFZGrFqB8DQ
Date: Mon, 15 Apr 2024 17:58:58 +0000
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References: <20240207172646.3981-1-xin3.li@intel.com>
In-Reply-To: <20240207172646.3981-1-xin3.li@intel.com>
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> This patch set enables the Intel flexible return and event delivery
> (FRED) architecture with KVM VMX to allow guests to utilize FRED.
>=20

<snip>

>=20
> Intel VMX architecture is extended to run FRED guests, and the major chan=
ges
> are:
>=20
> 1) New VMCS fields for FRED context management, which includes two new
> event data VMCS fields, eight new guest FRED context VMCS fields and eigh=
t new
> host FRED context VMCS fields.
>=20
> 2) VMX nested-exception support for proper virtualization of stack levels
> introduced with FRED architecture.
>=20

<snip>

>=20
> Patch 1-2 are cleanups to VMX basic and misc MSRs, which were sent out ea=
rlier
> as a preparation for FRED changes:
> https://lore.kernel.org/kvm/20240206182032.1596-1-xin3.li@intel.com/T/#u

Obviously I will drop the 2 clean patches in the next iteration.

> Patch 3-15 add FRED support to VMX.
> Patch 16-21 add FRED support to nested VMX.
> Patch 22 exposes FRED and its baseline features to KVM guests.
> Patch 23-25 add FRED selftests.

Please help to review and comment on the FRED KVM/VMX patches.

Thanks!
    Xin