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| author | Reinette Chatre <reinette.chatre@intel.com> | 2021-11-15 10:35:26 -0800 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2021-11-15 11:34:16 -0800 |
| commit | 688542e29fae655a8be25832f6a9959bdd308dd8 (patch) | |
| tree | ec600b5f486bac0ae297a0d2787657f34c2e668c | |
| parent | 26e688f1263a3c226f3bb5e3441c310ae11e8001 (diff) | |
| download | linux-688542e29fae655a8be25832f6a9959bdd308dd8.tar.bz2 | |
selftests/sgx: Add test for multiple TCS entry
Each thread executing in an enclave is associated with a Thread Control
Structure (TCS). The SGX test enclave contains two hardcoded TCS, thus
supporting two threads in the enclave.
Add a test to ensure it is possible to enter enclave at both entrypoints.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/7be151a57b4c7959a2364753b995e0006efa3da1.1636997631.git.reinette.chatre@intel.com
| -rw-r--r-- | tools/testing/selftests/sgx/defines.h | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/sgx/main.c | 32 | ||||
| -rw-r--r-- | tools/testing/selftests/sgx/test_encl.c | 6 |
3 files changed, 39 insertions, 0 deletions
diff --git a/tools/testing/selftests/sgx/defines.h b/tools/testing/selftests/sgx/defines.h index 0bbda6f0c7d3..02d775789ea7 100644 --- a/tools/testing/selftests/sgx/defines.h +++ b/tools/testing/selftests/sgx/defines.h @@ -23,6 +23,7 @@ enum encl_op_type { ENCL_OP_GET_FROM_BUFFER, ENCL_OP_PUT_TO_ADDRESS, ENCL_OP_GET_FROM_ADDRESS, + ENCL_OP_NOP, ENCL_OP_MAX, }; diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c index 1b4858f8ca4e..7e912db4c6c5 100644 --- a/tools/testing/selftests/sgx/main.c +++ b/tools/testing/selftests/sgx/main.c @@ -410,6 +410,38 @@ TEST_F(enclave, clobbered_vdso_and_user_function) } /* + * Sanity check that it is possible to enter either of the two hardcoded TCS + */ +TEST_F(enclave, tcs_entry) +{ + struct encl_op_header op; + + ASSERT_TRUE(setup_test_encl(ENCL_HEAP_SIZE_DEFAULT, &self->encl, _metadata)); + + memset(&self->run, 0, sizeof(self->run)); + self->run.tcs = self->encl.encl_base; + + op.type = ENCL_OP_NOP; + + EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0); + + EXPECT_EEXIT(&self->run); + EXPECT_EQ(self->run.exception_vector, 0); + EXPECT_EQ(self->run.exception_error_code, 0); + EXPECT_EQ(self->run.exception_addr, 0); + + /* Move to the next TCS. */ + self->run.tcs = self->encl.encl_base + PAGE_SIZE; + + EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0); + + EXPECT_EEXIT(&self->run); + EXPECT_EQ(self->run.exception_vector, 0); + EXPECT_EQ(self->run.exception_error_code, 0); + EXPECT_EQ(self->run.exception_addr, 0); +} + +/* * Second page of .data segment is used to test changing PTE permissions. * This spans the local encl_buffer within the test enclave. * diff --git a/tools/testing/selftests/sgx/test_encl.c b/tools/testing/selftests/sgx/test_encl.c index 5d86e3e6456a..4fca01cfd898 100644 --- a/tools/testing/selftests/sgx/test_encl.c +++ b/tools/testing/selftests/sgx/test_encl.c @@ -49,6 +49,11 @@ static void do_encl_op_get_from_addr(void *_op) memcpy(&op->value, (void *)op->addr, 8); } +static void do_encl_op_nop(void *_op) +{ + +} + void encl_body(void *rdi, void *rsi) { const void (*encl_op_array[ENCL_OP_MAX])(void *) = { @@ -56,6 +61,7 @@ void encl_body(void *rdi, void *rsi) do_encl_op_get_from_buf, do_encl_op_put_to_addr, do_encl_op_get_from_addr, + do_encl_op_nop, }; struct encl_op_header *op = (struct encl_op_header *)rdi; |