From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793776235; b=mFABDhoq+7px+u6Yaz8vDWOj594/9nW3Vms52U+18aNsNbv5Vt6WjMcTasaIQQ0FbD/I hlEL8V6ucAWlD8RGeyb6qxjhzKwHL/SCJvK8v6QyOmfIkNoTmQgVuC8MhOvgyXQ63iS34 20fSnSkvWhKs4C+AhTpUfXKWH3hp9fkztspFhnWzcIaNFuhbFXBFwPQllvxocpQGrG7r4 jcCsOGUL0wvhaLTNbPfMudkO7zAzNgDoV0WH+f/3x6+G3X/Q490z8OyEwBWB2jA3rAFT8 2fcqZLGMsmM01ZDKeVWJ6h5iHBCNt4DjWOo1sFumXkagmyX8JjXX6GaVyvkQ2C5KGNw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793776235; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Message-ID:Date: MIME-Version:User-Agent:Subject:To:Cc:References:From: Content-Language:In-Reply-To:Content-Type:Content-Transfer-Encoding; bh=VqhqYv5xRCJh3PZJ4l1J28vhc8YpfgaLTAOZMf1YNvc=; b=bST/Gd3zuwNm+GkPt7pU2taD3pIBfvOKd6IMFVNJnACp044vuSqHNdcVzkA+tY9BPGwz lLFcJEcAw4AlaZDgHkacUz7nugHKZN/wEeIfKPTV4CjuxbtwG0dMtiE84MRABKPFMRRxs ZQXDZDmQnbqxNqgd7ydeIQUZh/ry1l+8D3Du8Wii/dDhurNhj67GZqlQWrN34vKFQTiYv Tv/mSYEdI9Jjrf5cmWLWxVa52aVT/tuAjQK2Ho8ZLdd+JLcaPY85LnsBgfAeVPxo78lZW 3dOloIpD16nwna9MgH+9jIcf61UEhEavKYzC0ZFnfm0kLIXSQ9GXK3Q9DV6WXwtowKQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=UFlhlFnU; arc=none smtp.remote-ip=192.198.163.18 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CDADF606A31B; Wed, 4 Nov 2026 07:10:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org CDADF606A31B Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=UFlhlFnU DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1793776235; x=1825312235; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=Lb589BYUiqB+Eo3EFeccpweIuip/ffeL/F1y59tM/VU=; b=UFlhlFnUfdnicz+mhSETKeTz5u+HQseEWUZErKWoHVCrX/dU6Cr9iYxT UcSBz4AMjRwmqC8TNwM06JFRdHktjfppXer2iJlN/2dh2bb1UqM9eA2fA w6WTGM8dk3/1JOWDfgDfe3d5cUNCrVUC3ObIWERH8og4v4dUAM3N17WAo 0X4jN43Yjbm0P5BvpJ0z2EN05f7C3yfLg5l1gDO5JaNsyvNX3JxGCjxTi R3q7s7S88opHXJApLFhK49DFPRz7Sr56xcwOs73J5W3rGG2mcqSuJn2Nx FqlnUEwOTdfmpLH4bIY34o+yiD0BHzQQoMt1ddQY1UYRjEzSjRbEGXp2m A==; X-CSE-ConnectionGUID: I/sufF5lQvKPf8+W3lQ+ZA== X-CSE-MsgGUID: oRZkvDk3RhOnvjJEaWh6bg== X-IronPort-AV: E=McAfee;i="6800,10657,11955"; a="2554061" X-IronPort-AV: E=Sophos;i="6.27,194,1787036400"; d="scan'208";a="2554061" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2026 23:10:34 -0800 X-CSE-ConnectionGUID: Z9dqWEFJRkmo0iqgeO6AoA== X-CSE-MsgGUID: RDgCXPhUQIq6gX05VrV3cQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,194,1787036400"; d="scan'208";a="7201705" Received: from unknown (HELO [10.238.2.205]) ([10.238.2.205]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2026 23:10:29 -0800 Message-ID: Date: Wed, 4 Nov 2026 15:10:26 +0800 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 23/28] KVM: nVMX: Shadow ORIGINAL_EVENT_DATA and INJECTED_EVENT_DATA fields To: Sohil Mehta Cc: kvm@vger.kernel.org, x86@kernel.org, Paolo Bonzini , Sean Christopherson , Jonathan Corbet , Shuah Khan , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Xin Li , Andy Lutomirski , Peter Zijlstra , Andrew Cooper , Tom Lendacky , Nikunj A Dadhania , Shivansh Dhiman , David Woodhouse , Chao Gao , Zhao Liu , Yosry Ahmed , David Matlack , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260911213659.2025974-1-sohil.mehta@intel.com> <20260911213659.2025974-24-sohil.mehta@intel.com> From: Binbin Wu Content-Language: en-US In-Reply-To: <20260911213659.2025974-24-sohil.mehta@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/12/2026 5:36 AM, Sohil Mehta wrote: > From: "Xin Li (Intel)" > > Add ORIGINAL_EVENT_DATA and INJECTED_EVENT_DATA to the list of shadowed > VMCS fields. > > Shadowing these fields allows the L1 hypervisor to access them without > triggering a VM-exit to L0, optimizing performance for nested > virtualization workloads that frequently query or inject event data. > > Signed-off-by: Xin Li (Intel) > Signed-off-by: Sohil Mehta Reviewed-by: Binbin Wu > --- > v10: > - Split out of "KVM: nVMX: Guard SHADOW_FIELD_R[OW] macros with VMX > feature checks" (Sean). > --- > arch/x86/kvm/vmx/vmcs_shadow_fields.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/x86/kvm/vmx/vmcs_shadow_fields.h b/arch/x86/kvm/vmx/vmcs_shadow_fields.h > index 67e821c2be6d..bdd56f3ca6c3 100644 > --- a/arch/x86/kvm/vmx/vmcs_shadow_fields.h > +++ b/arch/x86/kvm/vmx/vmcs_shadow_fields.h > @@ -74,6 +74,10 @@ SHADOW_FIELD_RW(HOST_GS_BASE, host_gs_base) > /* 64-bit */ > SHADOW_FIELD_RO(GUEST_PHYSICAL_ADDRESS, guest_physical_address) > SHADOW_FIELD_RO(GUEST_PHYSICAL_ADDRESS_HIGH, guest_physical_address) > +SHADOW_FIELD_RO(ORIGINAL_EVENT_DATA, original_event_data) > +SHADOW_FIELD_RO(ORIGINAL_EVENT_DATA_HIGH, original_event_data) > +SHADOW_FIELD_RW(INJECTED_EVENT_DATA, injected_event_data) > +SHADOW_FIELD_RW(INJECTED_EVENT_DATA_HIGH, injected_event_data) > #endif > > #undef SHADOW_FIELD_RO