From: Sohil Mehta <sohil.mehta@intel.com>
To: Dave Hansen <dave.hansen@intel.com>, <kvm@vger.kernel.org>,
<x86@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H . Peter Anvin" <hpa@zytor.com>, Xin Li <xin@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Cooper <andrew.cooper3@citrix.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
Nikunj A Dadhania <nikunj@amd.com>,
Shivansh Dhiman <shivansh.dhiman@amd.com>,
David Woodhouse <dwmw@amazon.co.uk>,
Chao Gao <chao.gao@intel.com>,
Binbin Wu <binbin.wu@linux.intel.com>,
Zhao Liu <zhao1.liu@intel.com>, Yosry Ahmed <yosry@kernel.org>,
David Matlack <dmatlack@google.com>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-kselftest@vger.kernel.org>
Subject: Re: [PATCH v10 00/28] KVM: Enable FRED support with KVM VMX
Date: Mon, 19 Oct 2026 15:19:26 -0700 [thread overview]
Message-ID: <99404dbc-49b4-4c91-8d80-6526109cc301@intel.com> (raw)
In-Reply-To: <542f22f2-9140-4bf3-bf37-e79a4b99d3ce@intel.com>
On 10/19/2026 1:46 PM, Dave Hansen wrote:
> On 9/11/26 14:36, Sohil Mehta wrote:
>> This series enables Intel flexible return and event delivery (FRED) with
>> KVM VMX to allow guests to utilize FRED.
>
> Hey Sohil,
>
> So, one data point: I've been using these for the past few days on a
> piece of FRED-capable hardware to do kernel shadow stack development. At
> least for my purposes, they're working great.
>
Glad to hear that :)
> Other than sashiko, it looks like there hasn't been much activity on
> v10. What are your plans for this?
I have been focussed on getting the LASS KVM series ready for merge.
That is ready for Sean to look at.
Now, I am planning to focus on FRED KVM for the next few weeks. I'll go
through the Sashiko comments this week and respond to them.
> Are you going to rebase and repost after the merge window closes?
>
Yes, assuming that the Sashiko issues are minor, I'm hoping to time it
with the KVM next branch around the -rc2 timeframe.
> Is there anything else you know of holding this up?
I've listed a few opens in the cover letter but most of them are not
gating. There is *a* solution included for each open (except for the
INT1 event type issue reported by David). However, depending on the KVM
preference the code might need to be tweaked.
Overall, I think the patches need some human reviews. They have been
cache cold for a while, so I thought reviewers might need some time to
refresh.
With Plumbers done and folks in PRC back from holidays, hopefully we can
build some momentum and get this series merge ready :)
prev parent reply other threads:[~2026-10-19 22:19 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-11 21:36 Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 01/28] KVM: VMX: Enable support for secondary VM exit controls Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 02/28] KVM: VMX: Initialize VM entry/exit FRED controls in vmcs_config Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 03/28] KVM: VMX: Disable FRED if FRED consistency checks fail Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 04/28] x86/cea: Prefix event stack names with ESTACK_ Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 05/28] x86/cea: Use array indexing to simplify exception stack access Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 06/28] x86/fred: Export this_cpu_fred_rsp() for KVM usage Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 07/28] KVM: VMX: Initialize VMCS FRED fields Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 08/28] KVM: VMX: Set FRED MSR intercepts Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 09/28] KVM: VMX: Save/restore guest FRED RSP0 Sohil Mehta
2026-09-14 7:04 ` Binbin Wu
2026-09-14 16:14 ` Edgecombe, Rick P
2026-09-15 8:43 ` Binbin Wu
2026-09-11 21:36 ` [PATCH v10 10/28] KVM: VMX: Add support for saving and restoring FRED MSRs Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 11/28] KVM: x86: Add a helper to detect if FRED is enabled for a vCPU Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 12/28] KVM: x86: Add a new save/restore flag for FRED metadata Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 13/28] KVM: VMX: Virtualize FRED nested exception tracking Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 14/28] KVM: VMX: Virtualize FRED event_data Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 15/28] KVM: x86: Include CR4.FRED in the emulator CR4 write mask Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 16/28] KVM: x86: Mark CR4.FRED as not reserved Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 17/28] KVM: x86: Handle CR4.FRED when emulating RSM Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 18/28] KVM: VMX: Dump FRED context in dump_vmcs() Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 19/28] KVM: x86: Advertise support for FRED Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 20/28] KVM: nVMX: Enable support for secondary VM exit controls Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 21/28] KVM: nVMX: Handle FRED VMCS fields in nested VMX context Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 22/28] KVM: nVMX: Restrict event data VMCS fields to FRED-supported hosts Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 23/28] KVM: nVMX: Shadow ORIGINAL_EVENT_DATA and INJECTED_EVENT_DATA fields Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 24/28] KVM: nVMX: Validate FRED-related VMCS fields Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 25/28] KVM: nVMX: Enable VMX FRED controls Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 26/28] KVM: selftests: Add FRED MSRs to msrs_test Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 27/28] KVM: selftests: Add a new VM guest mode to run user level code Sohil Mehta
2026-09-11 21:36 ` [PATCH v10 28/28] KVM: selftests: Add fred exception tests Sohil Mehta
2026-09-15 6:03 ` [PATCH v10 00/28] KVM: Enable FRED support with KVM VMX Xin Li
2026-09-15 10:00 ` [EXTERNAL] " David Woodhouse
2026-09-24 11:14 ` Shivansh Dhiman
2026-09-24 14:13 ` David Woodhouse
2026-09-25 12:06 ` Shivansh Dhiman
2026-10-19 20:46 ` Dave Hansen
2026-10-19 22:19 ` Sohil Mehta [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=99404dbc-49b4-4c91-8d80-6526109cc301@intel.com \
--to=sohil.mehta@intel.com \
--cc=andrew.cooper3@citrix.com \
--cc=binbin.wu@linux.intel.com \
--cc=bp@alien8.de \
--cc=chao.gao@intel.com \
--cc=corbet@lwn.net \
--cc=dave.hansen@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=dmatlack@google.com \
--cc=dwmw@amazon.co.uk \
--cc=hpa@zytor.com \
--cc=kvm@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=nikunj@amd.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=seanjc@google.com \
--cc=shivansh.dhiman@amd.com \
--cc=skhan@linuxfoundation.org \
--cc=tglx@kernel.org \
--cc=thomas.lendacky@amd.com \
--cc=x86@kernel.org \
--cc=xin@zytor.com \
--cc=yosry@kernel.org \
--cc=zhao1.liu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®