| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sat, 9 Oct 2021 09:32:48 +0800
From: "Longpeng(Mike)" <longpeng2@...wei.com>
To: <andraprs@...zon.com>, <lexnv@...zon.com>, <alcioa@...zon.com>
CC: <arei.gonglei@...wei.com>, <gregkh@...uxfoundation.org>,
<kamal@...onical.com>, <pbonzini@...hat.com>,
<sgarzare@...hat.com>, <stefanha@...hat.com>,
<vkuznets@...hat.com>, <linux-kernel@...r.kernel.org>,
<ne-devel-upstream@...zon.com>, Longpeng <longpeng2@...wei.com>
Subject: [PATCH v3 4/4] nitro_enclaves: Add KUnit tests for contiguous physical memory regions merging
From: Longpeng <longpeng2@...wei.com>
Add KUnit tests for the contiguous physical memory regions merging
functionality from the Nitro Enclaves misc device logic.
We'll see the following message using dmesg if everything goes well:
[...] # Subtest: ne_misc_dev_test
[...] 1..1
[...] (NULL device *): Physical mem region address is not 2 MiB aligned
[...] (NULL device *): Physical mem region size is not multiple of 2 MiB
[...] (NULL device *): Physical mem region address is not 2 MiB aligned
[...] ok 1 - ne_misc_dev_test_merge_phys_contig_memory_regions
[...] ok 1 - ne_misc_dev_test
Signed-off-by: Longpeng <longpeng2@...wei.com>
---
Changes v2 -> v3:
- update the commit title and commit message. [Andra]
- align the fileds in 'struct phys_regions_test'. [Andra]
- rename 'phys_regions_testcases' to 'phys_regions_test_cases'. [Andra]
- add comments before each test cases. [Andra]
- initialize the variables in ne_misc_dev_test_merge_phys_contig_memory_regions. [Andra]
---
drivers/virt/nitro_enclaves/ne_misc_dev_test.c | 136 +++++++++++++++++++++++++
1 file changed, 136 insertions(+)
diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev_test.c b/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
index bcb755e..7bd6b34 100644
--- a/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
+++ b/drivers/virt/nitro_enclaves/ne_misc_dev_test.c
@@ -2,7 +2,143 @@
#include <kunit/test.h>
+#define MAX_PHYS_REGIONS 16
+#define INVALID_VALUE (~0ull)
+
+struct phys_regions_test {
+ u64 paddr;
+ u64 size;
+ int expect_rc;
+ int expect_num;
+ u64 expect_last_paddr;
+ u64 expect_last_size;
+} phys_regions_test_cases[] = {
+ /*
+ * Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
+ * Expected result:
+ * Failed, start address is not 2M-aligned
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 0
+ * region = {}
+ */
+ {0x1000, 0x200000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},
+
+ /*
+ * Add the region from 0x200000 to (0x200000 + 0x1000 - 1):
+ * Expected result:
+ * Failed, size is not 2M-aligned
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 0
+ * region = {}
+ */
+ {0x200000, 0x1000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},
+
+ /*
+ * Add the region from 0x200000 to (0x200000 + 0x200000 - 1):
+ * Expected result:
+ * Successful
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 1
+ * region = {
+ * {start=0x200000, end=0x3fffff}, // len=0x200000
+ * }
+ */
+ {0x200000, 0x200000, 0, 1, 0x200000, 0x200000},
+
+ /*
+ * Add the region from 0x0 to (0x0 + 0x200000 - 1):
+ * Expected result:
+ * Successful
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 2
+ * region = {
+ * {start=0x200000, end=0x3fffff}, // len=0x200000
+ * {start=0x0, end=0x1fffff}, // len=0x200000
+ * }
+ */
+ {0x0, 0x200000, 0, 2, 0x0, 0x200000},
+
+ /*
+ * Add the region from 0x600000 to (0x600000 + 0x400000 - 1):
+ * Expected result:
+ * Successful
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 3
+ * region = {
+ * {start=0x200000, end=0x3fffff}, // len=0x200000
+ * {start=0x0, end=0x1fffff}, // len=0x200000
+ * {start=0x600000, end=0x9fffff}, // len=0x400000
+ * }
+ */
+ {0x600000, 0x400000, 0, 3, 0x600000, 0x400000},
+
+ /*
+ * Add the region from 0xa00000 to (0xa00000 + 0x400000 - 1):
+ * Expected result:
+ * Successful, merging case!
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 3
+ * region = {
+ * {start=0x200000, end=0x3fffff}, // len=0x200000
+ * {start=0x0, end=0x1fffff}, // len=0x200000
+ * {start=0x600000, end=0xdfffff}, // len=0x800000
+ * }
+ */
+ {0xa00000, 0x400000, 0, 3, 0x600000, 0x800000},
+
+ /*
+ * Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
+ * Expected result:
+ * Failed, start address is not 2M-aligned
+ *
+ * Now the instance of struct phys_contig_mem_regions is:
+ * num = 3
+ * region = {
+ * {start=0x200000, end=0x3fffff}, // len=0x200000
+ * {start=0x0, end=0x1fffff}, // len=0x200000
+ * {start=0x600000, end=0xdfffff}, // len=0x800000
+ * }
+ */
+ {0x1000, 0x200000, -EINVAL, 3, 0x600000, 0x800000},
+};
+
+static void ne_misc_dev_test_merge_phys_contig_memory_regions(struct kunit *test)
+{
+ struct phys_contig_mem_regions *regions;
+ size_t sz = 0;
+ int rc = 0;
+ int i = 0;
+
+ sz = sizeof(*regions) + MAX_PHYS_REGIONS * sizeof(struct range);
+ regions = kunit_kzalloc(test, sz, GFP_KERNEL);
+ KUNIT_ASSERT_TRUE(test, regions != NULL);
+
+ for (i = 0; i < ARRAY_SIZE(phys_regions_test_cases); i++) {
+ struct phys_regions_test *entry = phys_regions_test_cases + i;
+
+ rc = ne_merge_phys_contig_memory_regions(regions,
+ entry->paddr, entry->size);
+ KUNIT_EXPECT_EQ(test, rc, entry->expect_rc);
+ KUNIT_EXPECT_EQ(test, regions->num, entry->expect_num);
+
+ if (entry->expect_last_paddr == INVALID_VALUE)
+ continue;
+
+ KUNIT_EXPECT_EQ(test, regions->region[regions->num - 1].start,
+ entry->expect_last_paddr);
+ KUNIT_EXPECT_EQ(test, range_len(®ions->region[regions->num - 1]),
+ entry->expect_last_size);
+ }
+}
+
static struct kunit_case ne_misc_dev_test_cases[] = {
+ KUNIT_CASE(ne_misc_dev_test_merge_phys_contig_memory_regions),
{}
};
--
1.8.3.1
Powered by blists - more mailing lists