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| author | Reinette Chatre <reinette.chatre@intel.com> | 2022-05-10 11:09:06 -0700 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2022-07-07 10:13:05 -0700 |
| commit | 08ceab2c37d32f422f8d98540656ee5a416ba729 (patch) | |
| tree | 09cc0d8474e76d643cfb180df082f016366ede9a /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 35c7e6dacb038e9311e98901d56bb1abd56f9ae0 (diff) | |
selftests/sgx: Test reclaiming of untouched page
Removing a page from an initialized enclave involves three steps:
(1) the user requests changing the page type to PT_TRIM via the
SGX_IOC_ENCLAVE_MODIFY_TYPES ioctl()
(2) on success the ENCLU[EACCEPT] instruction is run from within
the enclave to accept the page removal
(3) the user initiates the actual removal of the page via the
SGX_IOC_ENCLAVE_REMOVE_PAGES ioctl().
Remove a page that has never been accessed. This means that when the
first ioctl() requesting page removal arrives, there will be no page
table entry, yet a valid page table entry needs to exist for the
ENCLU[EACCEPT] function to succeed. In this test it is verified that
a page table entry can still be installed for a page that is in the
process of being removed.
Suggested-by: Haitao Huang <haitao.huang@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lkml.kernel.org/r/45e1b2a2fcd8c14597d04e40af5d8a9c1c5b017e.1652137848.git.reinette.chatre@intel.com
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions