From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 CCE2031B107 for ; Wed, 4 Feb 2026 17:24:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770225889; cv=none; b=SnaChZSstx6gZxTWyRDwQHtqsd+Q5t5GYvt7JryYlBjIfDEyJuUE2A16ozlRxzmAI16gP2CePrhGDz8c6Fc40i8RjiMGzU9imZ+d9+qVid1m5yIV90ULGTXDp/HfInQ45knCcWpvvwi9+C/8/DGKYYQm5MBezU4Sl8//LhXMOvk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770225889; c=relaxed/simple; bh=SNaM5eVChdUFa9hwhFxnLa1khBMv9YEYp00Fph58/eE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=TwkgxXmg396/AayK+vCAaXd4HFrzyUTJUODguN1q5QVwZ6SSgUP25TLloe5I9IfNBQTlN6zLIuVX5T5/IvX0H7VMnFbS/VYFz4SeeXt+bKGN3rwH97Gxfv+8zItOg7+Boh/lkp5zh/pjIaRK437fy+NapaTMIOihODRYgNXr/Ng= 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=aXyttUVw; arc=none smtp.client-ip=209.85.216.74 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="aXyttUVw" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-34abd303b4aso18330874a91.1 for ; Wed, 04 Feb 2026 09:24:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1770225889; x=1770830689; 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=ryh/AczkED/nUvo8c2PeHyj7TeQyCkqwe+hFGMfApuI=; b=aXyttUVw+KfV6g/jo221NE/L+C2KKmGEn7Y9Td5XF0kdWWBaZetP/E87UB1KSS/wRj TB9z7fyhJCsFOXJLZ7ZGT6x+NKsc6Ecj1CR6EtOKO0HXoMMJ3s0o+TwiZapLtD4VCjFx mPRAZNQ9S+uy7pvzuot3y6Ukj8r90GZ76M1l5GW3nR6l9mQvZZVbsvzLpPQBuvQjwF8A 0Y6h97D5wv5tSfIBiGdFaB6doVK8Sty1xfpymkCKvOMr08ukN3h38q/AYhdrCwn2u/JS +4sy9sEOzRRLMbDGrDva++DR2VQ6e4C+bMVyB+VxRimrzdaP+gGenH1NGUi7jWXT0HyT uzaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770225889; x=1770830689; 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=ryh/AczkED/nUvo8c2PeHyj7TeQyCkqwe+hFGMfApuI=; b=UtnOhcFutaCmMEw1Fh46P4FWn7CMXhf9JFpKXh7JX/5wLMrvXjWG1T9SRhSAWnbXeL BTNJu5apG1WxaH6Ts4hmoTSPCHTSELM+HvLVILj6URachq5qUH4BhXxRJKzYTpVzxKwv JNO8ZDtZ/8+oqiEaDo+tDASKDNaMqQlc4Jhl8M6WT5yRzNsMuhZcW6U7opgrLu+54c7O AMpz5JUx+anSzy09gw5XhdLulg5hgVCEuCmlGI/qx5Ehp0Bvq1KNEz3xKje3awtBoPzM aeLrx4tmvg1/c/91ZsOg0dC7ylb/bd/H3z9aKc1tB+oqeh2wqQvgzSO74rB5tymvm2/p dnFQ== X-Gm-Message-State: AOJu0Yx4OYoPUomb/vVAFanGI9nXw2n1uJy8rJwcH2sGqWAtwU483lYz 6CeUvv/IDmi0P8LdJHqKbcn3knyRYBMFSrxzFs4HM+w9GBlZcy85Xr+Qoybj+xAtccZuYH1c7fI XoWvyqg== X-Received: from pjbml9.prod.google.com ([2002:a17:90b:3609:b0:34c:e971:cfb1]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90a:d88c:b0:336:9dcf:ed14 with SMTP id 98e67ed59e1d1-35487193865mr3359774a91.23.1770225889209; Wed, 04 Feb 2026 09:24:49 -0800 (PST) Date: Wed, 4 Feb 2026 09:24:47 -0800 In-Reply-To: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: Message-ID: Subject: Re: [PATCH 00/32] KVM: VMX APIC timer virtualization support From: Sean Christopherson To: Isaku Yamahata Cc: kvm@vger.kernel.org, isaku.yamahata@gmail.com, Paolo Bonzini , linux-kernel@vger.kernel.org, rick.p.edgecombe@intel.com Content-Type: text/plain; charset="us-ascii" On Wed, Feb 04, 2026, Isaku Yamahata wrote: > On Wed, Feb 04, 2026 at 05:55:50AM -0800, > Sean Christopherson wrote: > > > > [1] Intel Architecture Instruction Set Extensions and Future Features > > > September 2025 319433-059 > > > Chapter 8 APIC-TIMER VIRTUALIZATION > > > https://cdrdv2.intel.com/v1/dl/getContent/671368 > > > > What CPU generation is expected to have APIC-timer virtualization? DMR? > > CWF. What P-core CPU generation? No offence to the Forest family, but I don't think most people are chomping at the bit to get their hands on CWF :-)