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a495cbdffa
Provide a recovery function sgx_memory_failure(). If the poison was consumed synchronously then send a SIGBUS. Note that the virtual address of the access is not included with the SIGBUS as is the case for poison outside of SGX enclaves. This doesn't matter as addresses of code/data inside an enclave is of little to no use to code executing outside the (now dead) enclave. Poison found in a free page results in the page being moved from the free list to the per-node poison page list. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Tested-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lkml.kernel.org/r/20211026220050.697075-5-tony.luck@intel.com |
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