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c30c4b2555
RDI is the first argument to __tdx_hypercall() that used to pass pointer to struct tdx_hypercall_args. RSI is the second argument that contains flags, such as TDX_HCALL_HAS_OUTPUT and TDX_HCALL_ISSUE_STI. RDI and RSI can also be used as arguments to TDVMCALL leafs. Move RDI to RAX and RSI to RBP to free up them for the hypercall arguments. RAX saved on stack during TDCALL as it returns status code in the register. RBP value has to be restored before returning from __tdx_hypercall() as it is callee-saved register. This is preparatory patch. No functional change. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/all/20230126221159.8635-4-kirill.shutemov%40linux.intel.com |
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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.