4a692ae360
Pull x86 mm updates from Borislav Petkov: - Flush *all* mappings from the TLB after switching to the trampoline pagetable to prevent any stale entries' presence - Flush global mappings from the TLB, in addition to the CR3-write, after switching off of the trampoline_pgd during boot to clear the identity mappings - Prevent instrumentation issues resulting from the above changes * tag 'x86_mm_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Prevent early boot triple-faults with instrumentation x86/mm: Include spinlock_t definition in pgtable. x86/mm: Flush global TLB when switching to trampoline page-table x86/mm/64: Flush global TLB on boot and AP bringup x86/realmode: Add comment for Global bit usage in trampoline_pgd x86/mm: Add missing <asm/cpufeatures.h> dependency to <asm/page_64.h>
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.