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Tue, 4 Jan 2022 17:59:00 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F40BCAC05B; Tue, 4 Jan 2022 17:58:59 +0000 (GMT) Received: from [9.47.158.152] (unknown [9.47.158.152]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 4 Jan 2022 17:58:59 +0000 (GMT) Message-ID: <3fa007a6-c264-c0b0-dd63-d24b2dc6d607@linux.ibm.com> Date: Tue, 4 Jan 2022 12:58:59 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH v4 2/3] acpi: tpm: Add missing device identification objects Content-Language: en-US To: Igor Mammedov References: <20211223022310.575496-1-stefanb@linux.ibm.com> <20211223022310.575496-3-stefanb@linux.ibm.com> <20220104105506.17ed9209@redhat.com> <1b32e29a-36fc-7275-e856-97a12585e0a3@linux.ibm.com> <20220104173456.5aaa0ea9@redhat.com> From: Stefan Berger In-Reply-To: <20220104173456.5aaa0ea9@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed X-TM-AS-GCONF: 00 X-Proofpoint-GUID: lV3Ia57PKTrTke9Ee8Av5XJ5setTl5iT X-Proofpoint-ORIG-GUID: 8PphX106aAkMW8qndP1ibqaTUiHYhcMk Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-04_08,2022-01-04_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 spamscore=0 phishscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2201040117 Received-SPF: pass client-ip=148.163.156.1; envelope-from=stefanb@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-3.354, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ani Sinha , marcandre.lureau@redhat.com, "Michael S . Tsirkin" , qemu-devel@nongnu.org, Shannon Zhao Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/4/22 11:34, Igor Mammedov wrote: > On Tue, 4 Jan 2022 09:48:32 -0500 > Stefan Berger wrote: > >> On 1/4/22 04:55, Igor Mammedov wrote: >>> On Wed, 22 Dec 2021 21:23:09 -0500 >>> Stefan Berger wrote: >>> >>>> Add missing device identification objects _STR and _UID. They will appear >>> why, does it break anything or it's just cosmetic? >> I don't know about whether any software needs these entries but it's >> driven by this: >> >> https://gitlab.com/qemu-project/qemu/-/issues/708 >> >> >>> >>>> as files 'description' and 'uid' under Linux sysfs. >>>> >>>> Cc: Shannon Zhao >>>> Cc: Michael S. Tsirkin >>>> Cc: Igor Mammedov >>>> Cc: Ani Sinha >>>> Fixes: https://gitlab.com/qemu-project/qemu/-/issues/708 >>>> Signed-off-by: Stefan Berger >>>> Message-id: 20211110133559.3370990-3-stefanb@linux.ibm.com >>>> --- >>>> hw/arm/virt-acpi-build.c | 1 + >>>> hw/i386/acpi-build.c | 8 ++++++++ >>>> 2 files changed, 9 insertions(+) >>>> >>>> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c >>>> index d0f4867fdf..f2514ce77c 100644 >>>> --- a/hw/arm/virt-acpi-build.c >>>> +++ b/hw/arm/virt-acpi-build.c >>>> @@ -229,6 +229,7 @@ static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms) >>>> >>>> Aml *dev = aml_device("TPM0"); >>>> aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); >>>> + aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); >>>> aml_append(dev, aml_name_decl("_UID", aml_int(0))); >>>> >>>> Aml *crs = aml_resource_template(); >>>> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c >>>> index 8383b83ee3..2fb70847cb 100644 >>>> --- a/hw/i386/acpi-build.c >>>> +++ b/hw/i386/acpi-build.c >>>> @@ -1812,11 +1812,15 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, >>>> dev = aml_device("TPM"); >>>> aml_append(dev, aml_name_decl("_HID", >>>> aml_string("MSFT0101"))); >>>> + aml_append(dev, >>>> + aml_name_decl("_STR", >>>> + aml_string("TPM 2.0 Device"))); >>>> } else { >>>> dev = aml_device("ISA.TPM"); >>>> aml_append(dev, aml_name_decl("_HID", >>>> aml_eisaid("PNP0C31"))); >>>> } >>>> + aml_append(dev, aml_name_decl("_UID", aml_int(1))); >>> why it's 1, and not 0 as in virt-arm? >> Marc-Andre and I looked at machines with hardware TPMs and that's what >> we found there as well, a '1'. > perhaps mention that in commit message Added to v5 2/3.