From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) (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 9D1882F60CC for ; Thu, 25 Jun 2026 18:01:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782410520; cv=none; b=uzgp6H0P/x31MtLfYzcH5skDxSbGEo1DAFP2FxxsXFcBQRuNNuEtoLD+rWFgiCrMfLGYJh+ivO77U+evVcO5nT05ZltyzZSNnJf/ll+jJoKk4P8PvR2+aDNMFpuJzsO5/KDk1AF4isnxdt5mLneWgJyn5TlLIxYh1PvCdLeASTI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782410520; c=relaxed/simple; bh=AWA1RyC3DW+Gbn4npqgD5CoqZo4JbHLfF2ZhLzS2+6k=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=mZJKDy9vnHRXSb0usc5wX8tPX89KQWyI+gNeor7+NuUAIpmUf8Rw+MbGVp7Tvz/OeBCEhhe1JrbwN7IByrsJ3tLUgBEFrx9McxTdrekBIdo0XcKj+P0Slahrg+XleEEmcReQ2AXWbye/40PWdIV7qtoNBbuf/zecB+eWcQ+DI7U= 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=UAvy30pr; arc=none smtp.client-ip=209.85.210.201 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="UAvy30pr" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-8422ca754d8so14172b3a.1 for ; Thu, 25 Jun 2026 11:01:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782410519; x=1783015319; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=b9XORV0MpbLe0TPyqpmXBTUptzOlLBIC6P4Y0TjKtCc=; b=UAvy30pr0dVaQQyIVUY+avcDX2R1o5pXwXi46dLvdTxjx+E6MthYb1mi75rxlLKA0b J3kMlPutGy0nMVBmp6Qu19LGtSTMytTbCDkRcM6odByTJ7c+ZIjlhF6c9PYecMUrN6nE isgIKGNziOBJns/ByMhmg4Bw9XG/m4/u0nIw6E4iDNXvVQ0U/7VUlgOk/MMnGZiUqqG3 9l8nYj0pmt0edmxCivb4LYNRr7ZP1TxlfWUV4LN/ubMEWAvi7SV0vgZPQdrioEuMGlNw KX1TCGWDSTjEvIxI+UokKWZa99kOeCDjWsMGt9x+UvHDJe7N1VxXlow+q4I0d1lGtyBg uIEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782410519; x=1783015319; 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=b9XORV0MpbLe0TPyqpmXBTUptzOlLBIC6P4Y0TjKtCc=; b=UH6nb+qiuIo5gQnVziW1BDvB22XisbjSoWczWJiedjQrzj7gFzOLn3N0pyAvkbfw3G WCNSuuopqSGsCnFsOup5sOqYeyikqa+dX3w+8Cjmrcf9iB0SumhkUoEklPEeJC0SWe/m z3c7JLcfDtAX4LE9k5KhHrR8KUcXVBk8NsUrgUAeYAajRvAVl3ZqqMQe/deT9h+dPpeW uBT9JkjWOUfzlc1iMQW15QMfuP3jTNBYAS8tcLU6QJlwgk+6fIp1G6v+3WB68mTePy/D fkNJfj1Qb19EqsOB5d/LILAcyeCOy3H/EaVC8r6s9mQnNyzs3c3RGmgC67PO+xR398Kz UAiw== X-Forwarded-Encrypted: i=1; AHgh+Rqm0IsleRz8U0V96kmoFRd9KjvcjPaB/8hrrl+2mESys1HAWYtxMLb+VzJcmq5MW20FuBXwaD8l2qao@lists.linux.dev X-Gm-Message-State: AOJu0YxzdtcpKOmaes08DqD3GY+x2hHFFB0Nx+S+qs5fA9JIDndaDqC/ IfW+fwDm1/qQAs0YgIcoF6YrqLf5TwrU7mI3igQXj6RR7ajrAHyMcTcZNqZwSnO6FS7dxvTIE2F omAQ3BQ== X-Received: from pful12.prod.google.com ([2002:a05:6a00:140c:b0:845:5d45:e510]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:438e:b0:842:5a18:9af4 with SMTP id d2e1a72fcca58-845b39e85bcmr4011361b3a.18.1782410518627; Thu, 25 Jun 2026 11:01:58 -0700 (PDT) Date: Thu, 25 Jun 2026 11:01:58 -0700 In-Reply-To: <20260618081355.3253581-17-yilun.xu@linux.intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260618081355.3253581-1-yilun.xu@linux.intel.com> <20260618081355.3253581-17-yilun.xu@linux.intel.com> Message-ID: Subject: Re: [PATCH v2 16/17] KVM: TDX: Add in-kernel Quote generation From: Sean Christopherson To: Xu Yilun Cc: x86@kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, djbw@kernel.org, kas@kernel.org, rick.p.edgecombe@intel.com, yilun.xu@intel.com, xiaoyao.li@intel.com, sohil.mehta@intel.com, adrian.hunter@intel.com, kishen.maloor@intel.com, tony.lindgren@linux.intel.com, peter.fang@intel.com, baolu.lu@linux.intel.com, zhenzhong.duan@intel.com, dave.hansen@intel.com, dave.hansen@linux.intel.com Content-Type: text/plain; charset="us-ascii" On Thu, Jun 18, 2026, Xu Yilun wrote: > From: Peter Fang > > Provide an in-kernel path for Quote generation when handling > TDG.VP.VMCALL, without requiring an exit to userspace. Why?