Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices:
OnePlus 5/5T, Xiaomi Mi 6, F(x)tec Pro¹ (2019 QX1000 model) & Sony Xperia XZ Premium (UNTESTED!)
d8da2da21f
Currently the OS fails the PSP initialization when the file specified at 'init_ex_path' does not exist or has invalid content. However the SEV spec just requires users to allocate 32KB of 0xFF in the file, which can be taken care of by the OS easily. To improve the robustness during the PSP init, leverage the retry mechanism and continue the init process: Before the first INIT_EX call, if the content is invalid or missing, continue the process by feeding those contents into PSP instead of aborting. PSP will then override it with 32KB 0xFF and return SEV_RET_SECURE_DATA_INVALID status code. In the second INIT_EX call, this 32KB 0xFF content will then be fed and PSP will write the valid data to the file. In order to do this, sev_read_init_ex_file should only be called once for the first INIT_EX call. Calling it again for the second INIT_EX call will cause the invalid file content overwriting the valid 32KB 0xFF data provided by PSP in the first INIT_EX call. Co-developed-by: Peter Gonda <pgonda@google.com> Signed-off-by: Peter Gonda <pgonda@google.com> Signed-off-by: Jacky Li <jackyli@google.com> Reported-by: Alper Gun <alpergun@google.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.