f18e502db6
The IMA log is currently copied to the new kernel during kexec 'load' using ima_dump_measurement_list(). However, the log copied at kexec 'load' may result in loss of IMA measurements that only occurred after kexec "load'. Setup the needed infrastructure to move the IMA log copy from kexec 'load' to 'execute'. Define a new IMA hook ima_update_kexec_buffer() as a stub function. It will be used to call ima_dump_measurement_list() during kexec 'execute'. Implement ima_kexec_post_load() function to be invoked after the new Kernel image has been loaded for kexec. ima_kexec_post_load() maps the IMA buffer to a segment in the newly loaded Kernel. It also registers the reboot notifier_block to trigger ima_update_kexec_buffer() at kexec 'execute'. Set the priority of register_reboot_notifier to INT_MIN to ensure that the IMA log copy operation will happen at the end of the operation chain, so that all the IMA measurement records extended into the TPM are copied Co-developed-by: Tushar Sugandhi <tusharsu@linux.microsoft.com> Signed-off-by: Tushar Sugandhi <tusharsu@linux.microsoft.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Steven Chen <chenste@linux.microsoft.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Acked-by: Baoquan He <bhe@redhat.com> Tested-by: Stefan Berger <stefanb@linux.ibm.com> # ppc64/kvm Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> |
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| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| cxl | ||
| drm | ||
| dt-bindings | ||
| hyperv | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rv | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| ufs | ||
| vdso | ||
| video | ||
| xen | ||
| Kbuild | ||