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At present, the SEV guest driver exclusively handles SNP guest messaging. All routines for sending guest messages are embedded within it. To support Secure TSC, SEV-SNP guests must communicate with the AMD Security Processor during early boot. However, these guest messaging functions are not accessible during early boot since they are currently part of the guest driver. Hence, relocate the core SNP guest messaging functions to SEV common code and provide an API for sending SNP guest messages. No functional change, but just an export symbol added for snp_send_guest_request() and dropped the export symbol on snp_issue_guest_request() and made it static. Signed-off-by: Nikunj A Dadhania <nikunj@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Link: https://lore.kernel.org/r/20250106124633.1418972-5-nikunj@amd.com
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 reStructuredText 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.