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 9D10B2F1FEA 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=Yxq6ihzuSHS85D/zNqrjTjFmKrGArxAYp1C+bM6XyQC5Y1J/punoaGvhhftc6P2LpOHlZ8hgxOeG64y+59TsONVMbMexKfODuFXjtKNtmrCYC22osJS8wLAUEyy4nERcYcDqf5lbiUxHxEFHgz0+fqRJS1aivCqCnuDiZMupMLA= 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=IY9hhBVW; 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="IY9hhBVW" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-845bc2f62c9so13787b3a.3 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=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=b9XORV0MpbLe0TPyqpmXBTUptzOlLBIC6P4Y0TjKtCc=; b=IY9hhBVWRfnXdKFhhq5vg8DrLoZUxUiyRsDfAPZVGN/QZVe3h3XMj5YCzr+mDX9VxV Z83DLCE4cmg00Lm8lCxMd1AofHEU3V/xsOb+ZqBHuIl80C7Y6+1bt0XQC6U3u7RbZI+J MCeTQp94dJxPvyomjKWH3+BOdKXAq4qHDMnhEFqCLkm9znGYmtwjIxGKVyPdhUsZftNV G2RiXHhDavSTj/oE2rElQPoX1Z+SE15t55HTlY7gTxmfP2kELKejyroG/ZuUsu2Xi57f jl9AWSkroQFyE96FkbK+IaNKj2bNQ1Tlrv7W3shbrJDhu65GZFWrk7KIVfcl68X3uwLU OqMg== 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=VNb9ojkyAPHPKxHR4DQqJ5wR2zVFuPuR+6mD3YZG2GZ3kdivT+wzM/PK85gJ8LuGSE IoWx0E3zuo1CU719aFzySy+VW/vmCA8D3uLCfl5GGO2KvUf1ccRvCPexNAMyk1rhWfBe 1cELUWlKMHbraQvohSNTBJnD9GkaohapTyQVOXLUDTYtbuSKfSXMH9HvwVQWHhsLCTge jQ0dgod7SjyBSwBEonuTljHC62iQZPwxyQGRUBH8EQ2VpD6ZPI3rHORfLJs9u5MU5FlW uOQ+Ki+I68ua0/S5l2crVOEIa+e3AbHlH4yBP7+qdhuy8tbVeAfmY6wJKizFJStOgjKl ByLg== X-Forwarded-Encrypted: i=1; AHgh+RqIIPm4bZo6f93pQVwW3f0flPw5hu96omFbkqOjJfEX7q/4foUY/Y+QcvFzvr7u/WALzDK3H0BvpC2AfwE=@vger.kernel.org X-Gm-Message-State: AOJu0Ywyr7PQlQttKWf+AfFt1ew7dh4Ubc++BGheWhycONS8xGHUwSQi bIWuxjCWNz0CcZnzXz/0eZfENMezRNR/67Ki7ufFlYt4pH5zCCPx/AHnEwh6tah/NpB675vvQg0 yL6Ymkg== 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-kernel@vger.kernel.org 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?