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Alexey Kardashevskiy 8a5dd102e4 ccp: Make snp_reclaim_pages and __sev_do_cmd_locked public
The snp_reclaim_pages() helper reclaims pages in the FW state. SEV-TIO
and the TMPM driver (a hardware engine which smashes IOMMU PDEs among
other things) will use to reclaim memory when cleaning up.

Share and export snp_reclaim_pages().

Most of the SEV-TIO code uses sev_do_cmd() which locks the sev_cmd_mutex
and already exported. But the SNP init code (which also sets up SEV-TIO)
executes under the sev_cmd_mutex lock so the SEV-TIO code has to use
the __sev_do_cmd_locked() helper. This one though does not need to be
exported/shared globally as SEV-TIO is a part of the CCP driver still.

Share __sev_do_cmd_locked() via the CCP internal header.

Signed-off-by: Alexey Kardashevskiy <aik@amd.com>
Link: https://patch.msgid.link/20251202024449.542361-2-aik@amd.com
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
History 2025-12-02 12:05:51 -08:00
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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 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.