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From: Andra Paraschiv <andraprs@amazon.com>
To: <linux-kernel@vger.kernel.org>
Cc: Anthony Liguori <aliguori@amazon.com>,
	Benjamin Herrenschmidt <benh@amazon.com>,
	Colm MacCarthaigh <colmmacc@amazon.com>,
	Bjoern Doebel <doebel@amazon.de>,
	David Woodhouse <dwmw@amazon.co.uk>,
	Frank van der Linden <fllinden@amazon.com>,
	Alexander Graf <graf@amazon.de>,
	Martin Pohlack <mpohlack@amazon.de>, Matt Wilson <msw@amazon.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Balbir Singh <sblbir@amazon.com>,
	Stewart Smith <trawets@amazon.com>,
	Uwe Dannowski <uwed@amazon.de>, <kvm@vger.kernel.org>,
	<ne-devel-upstream@amazon.com>,
	Andra Paraschiv <andraprs@amazon.com>
Subject: [PATCH v1 11/15] nitro_enclaves: Add logic for enclave start
Date: Tue, 21 Apr 2020 21:41:46 +0300
Message-ID: <20200421184150.68011-12-andraprs@amazon.com> (raw)
In-Reply-To: <20200421184150.68011-1-andraprs@amazon.com>

After all the enclave resources are set, the enclave is ready for
beginning to run.

Add ioctl command logic for starting an enclave after all its resources,
memory regions and CPUs, have been set.

The enclave start information includes the local channel addressing -
vsock CID - and the flags associated with the enclave.

Signed-off-by: Alexandru Vasile <lexnv@amazon.com>
Signed-off-by: Andra Paraschiv <andraprs@amazon.com>
---
 .../virt/amazon/nitro_enclaves/ne_misc_dev.c  | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.c b/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.c
index 0bd283f73a87..f07eb46f7995 100644
--- a/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.c
+++ b/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.c
@@ -455,6 +455,53 @@ static int ne_set_user_memory_region_ioctl(struct ne_enclave *ne_enclave,
 	return rc;
 }
 
+/**
+ * ne_enclave_start_ioctl - Trigger enclave start after the enclave resources,
+ * such as memory and CPU, have been set.
+ *
+ * This function gets called with the ne_enclave mutex held.
+ *
+ * @ne_enclave: private data associated with the current enclave.
+ * @enclave_start_metadata: enclave metadata that includes enclave cid and
+ *			    flags and the slot uid.
+ *
+ * @returns: 0 on success, negative return value on failure.
+ */
+static int ne_enclave_start_ioctl(struct ne_enclave *ne_enclave,
+	struct enclave_start_metadata *enclave_start_metadata)
+{
+	struct ne_pci_dev_cmd_reply cmd_reply = {};
+	struct enclave_start_req enclave_start_req = {};
+	int rc = -EINVAL;
+
+	BUG_ON(!ne_enclave);
+	BUG_ON(!ne_enclave->pdev);
+
+	if (WARN_ON(!enclave_start_metadata))
+		return -EINVAL;
+
+	enclave_start_metadata->slot_uid = ne_enclave->slot_uid;
+
+	enclave_start_req.enclave_cid = enclave_start_metadata->enclave_cid;
+	enclave_start_req.flags = enclave_start_metadata->flags;
+	enclave_start_req.slot_uid = enclave_start_metadata->slot_uid;
+
+	rc = ne_do_request(ne_enclave->pdev, ENCLAVE_START, &enclave_start_req,
+			   sizeof(enclave_start_req), &cmd_reply,
+			   sizeof(cmd_reply));
+	if (rc < 0) {
+		pr_err_ratelimited("Failure in enclave start [rc=%d]\n", rc);
+
+		return rc;
+	}
+
+	ne_enclave->state = NE_STATE_RUNNING;
+
+	enclave_start_metadata->enclave_cid = cmd_reply.enclave_cid;
+
+	return 0;
+}
+
 static int ne_enclave_open(struct inode *node, struct file *file)
 {
 	return 0;
@@ -521,6 +568,42 @@ static long ne_enclave_ioctl(struct file *file, unsigned int cmd,
 		return rc;
 	}
 
+	case NE_ENCLAVE_START: {
+		struct enclave_start_metadata enclave_start_metadata = {};
+		int rc = -EINVAL;
+
+		if (copy_from_user(&enclave_start_metadata, (void *)arg,
+				   sizeof(enclave_start_metadata))) {
+			pr_err_ratelimited("Failure in copy from user\n");
+
+			return -EFAULT;
+		}
+
+		mutex_lock(&ne_enclave->enclave_info_mutex);
+
+		if (!cpumask_empty(ne_enclave->cpu_siblings)) {
+			pr_err_ratelimited("Enclave has CPU siblings avail\n");
+
+			mutex_unlock(&ne_enclave->enclave_info_mutex);
+
+			return -EINVAL;
+		}
+
+		rc = ne_enclave_start_ioctl(ne_enclave,
+					    &enclave_start_metadata);
+
+		mutex_unlock(&ne_enclave->enclave_info_mutex);
+
+		if (copy_to_user((void *)arg, &enclave_start_metadata,
+				 sizeof(enclave_start_metadata))) {
+			pr_err_ratelimited("Failure in copy to user\n");
+
+			return -EFAULT;
+		}
+
+		return rc;
+	}
+
 	default:
 		return -ENOTTY;
 	}
-- 
2.20.1 (Apple Git-117)




Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in Romania. Registration number J22/2621/2005.


  parent reply index

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-21 18:41 [PATCH v1 00/15] Add support for Nitro Enclaves Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 01/15] nitro_enclaves: Add ioctl interface definition Andra Paraschiv
2020-04-21 18:47   ` Randy Dunlap
2020-04-21 21:45     ` Paolo Bonzini
2020-04-22 15:49       ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 02/15] nitro_enclaves: Define the PCI device interface Andra Paraschiv
2020-04-21 21:22   ` Paolo Bonzini
2020-04-23 13:37     ` Paraschiv, Andra-Irina
2020-04-24 15:10       ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 03/15] nitro_enclaves: Define enclave info for internal bookkeeping Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 04/15] nitro_enclaves: Init PCI device driver Andra Paraschiv
2020-04-25 14:25   ` Liran Alon
2020-04-29 16:31     ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 05/15] nitro_enclaves: Handle PCI device command requests Andra Paraschiv
2020-04-25 14:52   ` Liran Alon
2020-04-29 17:00     ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 06/15] nitro_enclaves: Handle out-of-band PCI device events Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 07/15] nitro_enclaves: Init misc device providing the ioctl interface Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 08/15] nitro_enclaves: Add logic for enclave vm creation Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 09/15] nitro_enclaves: Add logic for enclave vcpu creation Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 10/15] nitro_enclaves: Add logic for enclave memory region set Andra Paraschiv
2020-04-21 18:41 ` Andra Paraschiv [this message]
2020-04-21 18:41 ` [PATCH v1 12/15] nitro_enclaves: Add logic for enclave termination Andra Paraschiv
2020-04-21 18:41 ` [PATCH v1 13/15] nitro_enclaves: Add Kconfig for the Nitro Enclaves driver Andra Paraschiv
2020-04-21 18:50   ` Randy Dunlap
2020-04-22 14:35     ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 14/15] nitro_enclaves: Add Makefile " Andra Paraschiv
2020-04-23  8:12   ` kbuild test robot
2020-04-24 17:00     ` Paraschiv, Andra-Irina
2020-04-23  8:43   ` kbuild test robot
2020-04-24 15:27     ` Paraschiv, Andra-Irina
2020-04-21 18:41 ` [PATCH v1 15/15] MAINTAINERS: Add entry " Andra Paraschiv
2020-04-21 21:46 ` [PATCH v1 00/15] Add support for Nitro Enclaves Paolo Bonzini
2020-04-23 13:19   ` Paraschiv, Andra-Irina
2020-04-23 13:42     ` Paolo Bonzini
2020-04-23 17:42       ` Paraschiv, Andra-Irina
2020-04-23 17:51         ` Paolo Bonzini
2020-04-23 20:56           ` Alexander Graf
2020-04-23 21:18             ` Paolo Bonzini
2020-04-24 12:56               ` Alexander Graf
2020-04-24 16:27                 ` Paolo Bonzini
2020-04-24 19:11                   ` Alexander Graf
2020-04-25 16:05                     ` Paolo Bonzini
2020-04-27  9:15                       ` Paraschiv, Andra-Irina
2020-04-27  9:22                       ` Paraschiv, Andra-Irina
2020-04-27  9:46                         ` Paolo Bonzini
2020-04-27 10:00                           ` Paraschiv, Andra-Irina
2020-04-28 15:07                       ` Alexander Graf
2020-04-29 13:20                         ` Paolo Bonzini
2020-04-30 13:59                           ` Paraschiv, Andra-Irina
2020-04-30 10:34                         ` Paolo Bonzini
2020-04-30 11:21                           ` Alexander Graf
2020-04-30 11:38                             ` Paolo Bonzini
2020-04-30 11:47                               ` Alexander Graf
2020-04-30 11:58                                 ` Paolo Bonzini
2020-04-30 12:19                                   ` Alexander Graf
2020-05-07 17:44       ` Pavel Machek
2020-05-08  7:00         ` Paraschiv, Andra-Irina
2020-05-09 19:21           ` Pavel Machek
2020-05-10 11:02             ` Herrenschmidt, Benjamin
2020-05-11 10:49               ` Paraschiv, Andra-Irina
2020-05-11 13:49               ` Stefan Hajnoczi
2020-04-24  3:04     ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
2020-04-24  8:19       ` Paraschiv, Andra-Irina
2020-04-24  9:54         ` Paraschiv, Andra-Irina
2020-04-26  1:55           ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
2020-04-27 18:39             ` Paraschiv, Andra-Irina
2020-04-24  9:59     ` Tian, Kevin
2020-04-24 13:59       ` Paraschiv, Andra-Irina
2020-04-26  8:16         ` Tian, Kevin
2020-04-27 19:05           ` Paraschiv, Andra-Irina
     [not found]         ` <CAKXe6SLonLQLAOY9Q_2AzTeg4uJxiknsAWnJpTF0hMcXEG5Tew@mail.gmail.com>
2020-05-11 12:05           ` Paraschiv, Andra-Irina
2020-04-25 15:25     ` Liran Alon
2020-04-27  7:56       ` Paraschiv, Andra-Irina
2020-04-27 11:44         ` Liran Alon
2020-04-28 15:25           ` Alexander Graf
2020-04-28 16:01             ` Liran Alon

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