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[ Upstream commit 90f357208200a941e90e75757123326684d715d0 ] FRED and IDT can share most of the definitions and declarations so that in the majority of cases the actual handler implementation is the same. The differences are the exceptions where FRED stores exception related information on the stack and the sysvec implementations as FRED can handle irqentry/exit() in the dispatcher instead of having it in each handler. Also add stub defines for vectors which are not used due to Kconfig decisions to spare the ifdeffery in the actual FRED dispatch code. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Xin Li <xin3.li@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Tested-by: Shan Kang <shan.kang@intel.com> Link: https://lore.kernel.org/r/20231205105030.8698-23-xin3.li@intel.com Stable-dep-of: 477d81a1c47a ("x86/entry: Remove unwanted instrumentation in common_interrupt()") Signed-off-by: Sasha Levin <sashal@kernel.org>
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.