From nobody Wed Oct 29 06:38:54 2025 Delivered-To: importer@patchew.org Received-SPF: temperror (zoho.com: Error in retrieving data from DNS) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=temperror (zoho.com: Error in retrieving data from DNS) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1513447038474253.7633032500014; Sat, 16 Dec 2017 09:57:18 -0800 (PST) Received: from localhost ([::1]:51561 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQGhp-0008Ve-Lt for importer@patchew.org; Sat, 16 Dec 2017 12:57:01 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46127) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQGU4-0006Pu-2y for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eQGU0-0000Ku-8u for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:48 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:52058) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eQGTz-0000Ka-Vw for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:44 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vBGHdZNC135219 for ; Sat, 16 Dec 2017 12:42:43 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 2ew0hhb4fk-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sat, 16 Dec 2017 12:42:42 -0500 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Sat, 16 Dec 2017 10:42:39 -0700 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vBGHgdXN2883918; Sat, 16 Dec 2017 10:42:39 -0700 Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 563AF6E03F; Sat, 16 Dec 2017 10:42:39 -0700 (MST) Received: from sbct-3.watson.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP id F0ECC6E038; Sat, 16 Dec 2017 10:42:38 -0700 (MST) From: Stefan Berger To: qemu-devel@nongnu.org Date: Sat, 16 Dec 2017 12:41:45 -0500 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 17121617-0004-0000-0000-00001363DFC0 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008213; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000244; SDB=6.00961141; UDB=6.00486146; IPR=6.00741136; BA=6.00005744; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018575; XFM=3.00000015; UTC=2017-12-16 17:42:40 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17121617-0005-0000-0000-0000854A7C3C Message-Id: <1513446109-9013-29-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-16_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712160265 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-001b2d01.pphosted.com id vBGHdZNC135219 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PULL v1 28/32] tpm: Move getting TPM buffer size to backends X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, Stefan Berger Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_6 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Rather than setting the size of the TPM buffer in the front-end, query the backend for the size of the buffer. In this patch we just move the hard-coded buffer size of 4096 to the backends. Signed-off-by: Stefan Berger Reviewed-by: Marc-Andr=C3=A9 Lureau --- backends/tpm.c | 7 +++++++ hw/tpm/tpm_emulator.c | 6 ++++++ hw/tpm/tpm_passthrough.c | 6 ++++++ hw/tpm/tpm_tis.c | 12 +++++++----- include/sysemu/tpm_backend.h | 12 ++++++++++++ 5 files changed, 38 insertions(+), 5 deletions(-) diff --git a/backends/tpm.c b/backends/tpm.c index 7777467..cb49185 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -139,6 +139,13 @@ TPMVersion tpm_backend_get_tpm_version(TPMBackend *s) return k->get_tpm_version(s); } =20 +size_t tpm_backend_get_buffer_size(TPMBackend *s) +{ + TPMBackendClass *k =3D TPM_BACKEND_GET_CLASS(s); + + return k->get_buffer_size(s); +} + TPMInfo *tpm_backend_query_tpm(TPMBackend *s) { TPMInfo *info =3D g_new0(TPMInfo, 1); diff --git a/hw/tpm/tpm_emulator.c b/hw/tpm/tpm_emulator.c index 24cb611..44a769d 100644 --- a/hw/tpm/tpm_emulator.c +++ b/hw/tpm/tpm_emulator.c @@ -356,6 +356,11 @@ static TPMVersion tpm_emulator_get_tpm_version(TPMBack= end *tb) return tpm_emu->tpm_version; } =20 +static size_t tpm_emulator_get_buffer_size(TPMBackend *tb) +{ + return 4096; +} + static int tpm_emulator_block_migration(TPMEmulator *tpm_emu) { Error *err =3D NULL; @@ -556,6 +561,7 @@ static void tpm_emulator_class_init(ObjectClass *klass,= void *data) tbc->get_tpm_established_flag =3D tpm_emulator_get_tpm_established_fla= g; tbc->reset_tpm_established_flag =3D tpm_emulator_reset_tpm_established= _flag; tbc->get_tpm_version =3D tpm_emulator_get_tpm_version; + tbc->get_buffer_size =3D tpm_emulator_get_buffer_size; tbc->get_tpm_options =3D tpm_emulator_get_tpm_options; =20 tbc->handle_request =3D tpm_emulator_handle_request; diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c index 73554aa..daac67d 100644 --- a/hw/tpm/tpm_passthrough.c +++ b/hw/tpm/tpm_passthrough.c @@ -199,6 +199,11 @@ static TPMVersion tpm_passthrough_get_tpm_version(TPMB= ackend *tb) return tpm_pt->tpm_version; } =20 +static size_t tpm_passthrough_get_buffer_size(TPMBackend *tb) +{ + return 4096; +} + /* * Unless path or file descriptor set has been provided by user, * determine the sysfs cancel file following kernel documentation @@ -354,6 +359,7 @@ static void tpm_passthrough_class_init(ObjectClass *kla= ss, void *data) tbc->reset_tpm_established_flag =3D tpm_passthrough_reset_tpm_established_flag; tbc->get_tpm_version =3D tpm_passthrough_get_tpm_version; + tbc->get_buffer_size =3D tpm_passthrough_get_buffer_size; tbc->get_tpm_options =3D tpm_passthrough_get_tpm_options; tbc->handle_request =3D tpm_passthrough_handle_request; } diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 98c11a4..bd22e69 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -88,6 +88,8 @@ typedef struct TPMState { =20 TPMBackend *be_driver; TPMVersion be_tpm_version; + + size_t be_buffer_size; } TPMState; =20 #define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS) @@ -977,10 +979,9 @@ static int tpm_tis_do_startup_tpm(TPMState *s) return tpm_backend_startup_tpm(s->be_driver); } =20 -static void tpm_tis_realloc_buffer(TPMSizedBuffer *sb) +static void tpm_tis_realloc_buffer(TPMSizedBuffer *sb, + size_t wanted_size) { - size_t wanted_size =3D 4096; /* Linux tpm.c buffer size */ - if (sb->size !=3D wanted_size) { sb->buffer =3D g_realloc(sb->buffer, wanted_size); sb->size =3D wanted_size; @@ -1011,6 +1012,7 @@ static void tpm_tis_reset(DeviceState *dev) int c; =20 s->be_tpm_version =3D tpm_backend_get_tpm_version(s->be_driver); + s->be_buffer_size =3D tpm_backend_get_buffer_size(s->be_driver); =20 tpm_backend_reset(s->be_driver); =20 @@ -1037,9 +1039,9 @@ static void tpm_tis_reset(DeviceState *dev) s->loc[c].state =3D TPM_TIS_STATE_IDLE; =20 s->loc[c].w_offset =3D 0; - tpm_tis_realloc_buffer(&s->loc[c].w_buffer); + tpm_tis_realloc_buffer(&s->loc[c].w_buffer, s->be_buffer_size); s->loc[c].r_offset =3D 0; - tpm_tis_realloc_buffer(&s->loc[c].r_buffer); + tpm_tis_realloc_buffer(&s->loc[c].r_buffer, s->be_buffer_size); } =20 tpm_tis_do_startup_tpm(s); diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index 590e8b4..7c98b61 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -81,6 +81,8 @@ struct TPMBackendClass { =20 TPMVersion (*get_tpm_version)(TPMBackend *t); =20 + size_t (*get_buffer_size)(TPMBackend *t); + TpmTypeOptions *(*get_tpm_options)(TPMBackend *t); =20 void (*handle_request)(TPMBackend *s, TPMBackendCmd *cmd); @@ -183,6 +185,16 @@ int tpm_backend_reset_tpm_established_flag(TPMBackend = *s, uint8_t locty); TPMVersion tpm_backend_get_tpm_version(TPMBackend *s); =20 /** + * tpm_backend_get_buffer_size: + * @s: the backend to call into + * + * Get the TPM's buffer size. + * + * Returns buffer size. + */ +size_t tpm_backend_get_buffer_size(TPMBackend *s); + +/** * tpm_backend_query_tpm: * @s: the backend * --=20 2.5.5