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b484079b9f
ghes_copy_tofrom_phys() uses a different fixmap slot depending on in_nmi(). This doesn't work when there are multiple NMI-like notifications, that could interrupt each other. As with the locking, move the chosen fixmap_idx to the notification helper. This only matters for NMI-like notifications, anything calling ghes_proc() can use the IRQ fixmap slot as its already holding an irqsave spinlock. This lets us collapse the ghes_ioremap_pfn_*() helpers. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Borislav Petkov <bp@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.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 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.