From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F14A51EE7AD for ; Tue, 4 Mar 2025 19:53:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741118041; cv=none; b=K3mKHovbhxmZjgiCQhNAmj4kF1aXir2aFTpsPITgtQt7GsEqnfH7DCtiJPKTnLFDFHeYKKsQ45GDVwR0VJO2qxJpohXX9LHJobltirQggWi9VieTZdEes+Tz9pHxK9D+gbObAClgwyTMRfnIbnfIR1/WEq+JMrqg2Ervdx2LlIs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741118041; c=relaxed/simple; bh=h0QmsF5WjU8uUwJMDtkw5V/S9XuBsfrGQ8xVySEL8cg=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=gGGwkX1X8Y26KilKdRr2IePERzSY2HZuOgVKowFig0YtopF5mibN7yDyTA1slFiqpW7bLiZBIarDxUoEMp35T84iBqINpXfBYYqwLM1KCTrtuCyJzIL7VL9ZXu7BgS0bFaVs6orOltnFfBYQ1QPYRSAwQ1IkLkZtrnphOb7MbuA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=y3vm450d; arc=none smtp.client-ip=209.85.216.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="y3vm450d" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-2fe86c01e2bso11476672a91.2 for ; Tue, 04 Mar 2025 11:53:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1741118039; x=1741722839; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=FcX8s6TGQjn/ciNyOtVkHsyvdW8iKLLpE8U6tntEZos=; b=y3vm450dWDHQJv0jDxz0YiC2xJ8SSdhIHBNjbGQlIn4Zf/G5k330KdRIARzT3kA+LO DxwFErOXEltPNFjAttYipAKkA7d5kfEKFtU5fPxB8krnyUizvUv5wJF27toki3zJkz+b NZifndeodY1TAQQqDTAYoZiq0quv2zgzmwbNvk8uxWT2IeGulK2l8NeQPvxOSeM85yX/ QFxMApcuvuY18/z5bRSTlJS50oDvjaZfdOYuxlv5GleEIFqfd72hyew/MX7P219yOkCO tkiur2Mu0o9ILzUDqRco67769pvTcUnpOmT47gnyRacKyXOMZOusgpUcn6VAzuqVgcNp Fgsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741118039; x=1741722839; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=FcX8s6TGQjn/ciNyOtVkHsyvdW8iKLLpE8U6tntEZos=; b=AOLNpf/u/T9xlighF0WiVYNBakVuAScKtRyiwSEe5/vVBcnvN7fBZiglpLdBtBYBye wefZCZP7v+2QUIU2y7zphAnOpiRw6NPgNt6RhjnN91mpgU+XHzOF09TRrlTp0kfjGhcH FJ7wVCDaqpHwiHevvwIkiwxtnpgU6aAUyXzppf55mChhglfR9a6fqKrZZddbNBkvE9Eq S8OauSjAczLVMH8FCOHDJwVxchGnGUDxs+/NZzXhhmQeMZCecIlKZDR8uzxHQmjpM7k0 X9kH5Pvf1u5y6/7lpl0VXRduF2KmHKOdV6nLPSZZKepPqciUfGDzPT8jtLGT/CBzZNMV QMlw== X-Forwarded-Encrypted: i=1; AJvYcCUt2RhRug5WSzmouHUOqYt4AEnpQgrSd/ePbrB+wrkXUsMyJYDdoQar6KbBmJbb0qvbLT6lPNqFQb1foEE=@vger.kernel.org X-Gm-Message-State: AOJu0YxB+q0M3tJv88/amBIX9rP8rMKPPMFvGsXkRZbPjWFoVvPpUNJR hNcnI6dh4sph2bcHVS+iyFZfP1D6eRThB4oJ/6ppGjuubNFjr6b9G9lQf602s1zcpfP11hmLirf x3g== X-Google-Smtp-Source: AGHT+IHOGmjXt5qX0JwYqHXuRcMAyZDKrDodX6geowjqs/tfeTheYOjqw3n3RYRUFrP2O9PpebVhmR1sgYI= X-Received: from pjbsi3.prod.google.com ([2002:a17:90b:5283:b0:2fc:2e92:6cf]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:3f06:b0:2f5:88bb:118 with SMTP id 98e67ed59e1d1-2ff497eb7a6mr724027a91.22.1741118039359; Tue, 04 Mar 2025 11:53:59 -0800 (PST) Date: Tue, 4 Mar 2025 11:53:57 -0800 In-Reply-To: <42035a43-660c-4d38-9369-db824e271671@zytor.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241126101710.62492-1-chao.gao@intel.com> <42035a43-660c-4d38-9369-db824e271671@zytor.com> Message-ID: Subject: Re: [PATCH v2 0/6] Introduce CET supervisor state support From: Sean Christopherson To: Xin Li Cc: Chao Gao , Borislav Petkov , tglx@linutronix.de, dave.hansen@intel.com, x86@kernel.org, pbonzini@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, peterz@infradead.org, rick.p.edgecombe@intel.com, mlevitsk@redhat.com, weijiang.yang@intel.com, john.allen@amd.com Content-Type: text/plain; charset="us-ascii" On Tue, Mar 04, 2025, Xin Li wrote: > On 1/10/2025 5:26 PM, Sean Christopherson wrote: > > On Tue, Nov 26, 2024, Chao Gao wrote: > > > On Tue, Nov 26, 2024 at 06:17:04PM +0800, Chao Gao wrote: > > > > This v2 is essentially a resend of the v1 series. I took over this work > > > >from Weijiang, so I added my Signed-off-by and incremented the version > > > > number. This repost is to seek more feedback on this work, which is a > > > > dependency for CET KVM support. In turn, CET KVM support is a dependency > > > > for both FRED KVM support and CET AMD support. > > > > > > This series is primarily for the CET KVM series. Merging it through the tip > > > tree means this code will not have an actual user until the CET KVM series > > > is merged. A good proposal from Rick is that x86 maintainers can ack this > > > series, and then it can be picked up by the KVM maintainers along with the > > > CET KVM series. Dave, Paolo and Sean, are you okay with this approach? > > > > Boris indicated off-list that he would prefer to take this through tip and give > > KVM an immutable branch. I'm a-ok with either approach. > > > > Hi Sean and Boris, > > At this point because KVM is the only user of this feature, would it > make more sense to take this patch set through KVM x86 tree? Which tree it goes through is largely irrelevant, it needs explicit acceptance from the tip tree folks no matter what.