linux-kernel - Re: [RFC PATCH V5 0/4] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAMvTesB2gr04ASSmLOCueNrL5a-WY_G9-yVfz5=Ha+2zzM20PA@mail.gmail.com>
Date: Wed, 6 Aug 2025 17:20:52 +0800
From: Tianyu Lan <ltykernel@...il.com>
To: Naman Jain <namjain@...ux.microsoft.com>
Cc: kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org, 
	decui@...rosoft.com, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, 
	dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com, arnd@...db.de, 
	Neeraj.Upadhyay@....com, kvijayab@....com, Tianyu Lan <tiala@...rosoft.com>, 
	linux-arch@...r.kernel.org, linux-hyperv@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH V5 0/4] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform

On Wed, Aug 6, 2025 at 1:42 PM Naman Jain <namjain@...ux.microsoft.com> wrote:
>
>
>
> On 8/4/2025 11:35 PM, Tianyu Lan wrote:
> > From: Tianyu Lan <tiala@...rosoft.com>
> >
> > Secure AVIC is a new hardware feature in the AMD64
> > architecture to allow SEV-SNP guests to prevent the
> > hypervisor from generating unexpected interrupts to
> > a vCPU or otherwise violate architectural assumptions
> > around APIC behavior.
> >
> > Each vCPU has a guest-allocated APIC backing page of
> > size 4K, which maintains APIC state for that vCPU.
> > APIC backing page's ALLOWED_IRR field indicates the
> > interrupt vectors which the guest allows the hypervisor
> > to send.
> >
> > This patchset is to enable the feature for Hyper-V
> > platform. Patch "Drivers: hv: Allow vmbus message
> > synic interrupt injected from Hyper-V" is to expose
> > new fucntion hv_enable_coco_interrupt() and device
> > driver and arch code may update AVIC backing page
> > ALLOWED_IRR field to allow Hyper-V inject associated
> > vector.
> >
> > This patchset is based on the AMD patchset "AMD: Add
> > Secure AVIC Guest Support"
> >
>
>
> NIT:
> Generally RFC tag is meant to be used for the patches which are probably
> not ready for merging, and is mostly intended for having a discussion
> around your changes. Since this is now reviewed by multiple people and
> have gone through multiple versions already, if you feel this can be
> merged, you can remove RFC tags in next version, if you are planning to
> send it.
>
Hi Naman:
     Thanks for your review and suggestion. This patchset is based on
the AMD Secure AVIC
driver patchset.which is still with RFC tag. I will remove the RFC tag
of this patchset after AMD
patchset merged.
.
...
Thanks
Tianyu Lan