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Tsirkin" , Marcel Apfelbaum , Alex Williamson , "Daniel P. Berrange" , Juan Quintela , Markus Armbruster , Eric Blake , Jason Zeng , Zheng Chuan , Steve Sistare , Mark Kanda , Guoyi Tu , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Igor Mammedov , David Hildenbrand , John Snow , Peng Liang Subject: [PATCH V9 28/46] hostmem-epc: cpr support Date: Tue, 26 Jul 2022 09:10:25 -0700 Message-Id: <1658851843-236870-29-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> References: <1658851843-236870-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-26_04,2022-07-26_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 phishscore=0 spamscore=0 mlxlogscore=999 suspectscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207260063 X-Proofpoint-GUID: L89OKDV4GNA-4VdTSwCQ2_d3Tc25wx0C X-Proofpoint-ORIG-GUID: L89OKDV4GNA-4VdTSwCQ2_d3Tc25wx0C Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.177.32; envelope-from=steven.sistare@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @oracle.com) X-ZM-MESSAGEID: 1658853766653100001 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Preserve memory-backend-epc memory objects during cpr. Signed-off-by: Steve Sistare --- backends/hostmem-epc.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/backends/hostmem-epc.c b/backends/hostmem-epc.c index 037292d..c6b1fe4 100644 --- a/backends/hostmem-epc.c +++ b/backends/hostmem-epc.c @@ -16,32 +16,34 @@ #include "qapi/error.h" #include "sysemu/hostmem.h" #include "hw/i386/hostmem-epc.h" +#include "migration/cpr-state.h" =20 static void sgx_epc_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) { uint32_t ram_flags; - char *name; - int fd; + g_autofree char *name =3D object_get_canonical_path(OBJECT(backend)); + int fd =3D cpr_find_fd(name, 0); =20 if (!backend->size) { error_setg(errp, "can't create backend with size 0"); return; } =20 - fd =3D qemu_open_old("/dev/sgx_vepc", O_RDWR); if (fd < 0) { - error_setg_errno(errp, errno, - "failed to open /dev/sgx_vepc to alloc SGX EPC"); - return; + fd =3D qemu_open_old("/dev/sgx_vepc", O_RDWR); + if (fd < 0) { + error_setg_errno(errp, errno, + "failed to open /dev/sgx_vepc to alloc SGX EPC= "); + return; + } + cpr_save_fd(name, 0, fd); } =20 - name =3D object_get_canonical_path(OBJECT(backend)); ram_flags =3D (backend->share ? RAM_SHARED : 0) | RAM_PROTECTED; memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name, backend->size, ram_flags, fd, 0, errp); - g_free(name); } =20 static void sgx_epc_backend_instance_init(Object *obj) --=20 1.8.3.1