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b133ef6ea4
Just one fix, to make sure the PCR (Processor Compatibility Register) is reset on boot. Otherwise if we're running in compat mode in a guest (eg. pretending a Power9 is a Power8) and the host kernel oopses and kdumps then the kdump kernel's userspace will be running in Power8 mode, and will SIGILL if it uses Power9-only instructions. Thanks to: Michael Neuling. -----BEGIN PGP SIGNATURE----- iQIwBAABCAAaBQJbB/PjExxtcGVAZWxsZXJtYW4uaWQuYXUACgkQUevqPMjhpYCK rhAAh2zSxZfpvDkjvWwqD26yDiDRcVV+rU2CtDiFQk+tAWVFhFqEMJvPWaUU4Ub9 EQStTS4gLiYsY282M+TyFGoUX76aAlMJenaCak8YQmYA4DQ8Sv2LB/jTJBhvbVnC 5ig9aNhSef5aDS7i5r5XzITf+SQ+1U2wddMxzy5Oklku+ypFX3cj9MtNvcD+fJIK D35vvv5kI2a3wZsE/R7TB91MmfLgWY/4fb4da+dXMVTm+E1gHgOOU7JcnmzEJ/fH Ds3d8JiIvsFXPCSwCruLiTXtmzQjZUYK3p81ffD7f3qCLBb54PbNBvsFgMYq4h8k JGNeTqo+gGq3rqqbsftSudHVfG9jleKiJk7Xng3m5iqADHioroq0WTxulZczFd7t DIl3NcmPnl7kFG/OjO39EDg50+Y/o0+uurjiy3EB9xTtivnOQ0Os+7tvmeqnzL8y RpXVtZ0Uvf1aBrfXaobz/uNGy4Zy0ZamzdyxfLup7gqtPdAnDVnRak2Cn5bKuqK0 Xsi7/liq6Y7mwtys+iFuCMthh4/wza43VyH+ZYleEXOe6c0hfnuAvQdGcRSDtLMh arSXYKbJCzwaQXKiTL5VRf/ta51MVi22ghV9/72Cf0wYUMJe0SNDYkhn34C8KlxB Z5xYHljqRZE/uD8lYeeSdZKMvNEcinEJSpaC645uJVcvkKA= =lmT9 -----END PGP SIGNATURE----- Merge tag 'powerpc-4.17-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fix from Michael Ellerman: "Just one fix, to make sure the PCR (Processor Compatibility Register) is reset on boot. Otherwise if we're running in compat mode in a guest (eg. pretending a Power9 is a Power8) and the host kernel oopses and kdumps then the kdump kernel's userspace will be running in Power8 mode, and will SIGILL if it uses Power9-only instructions. Thanks to Michael Neuling" * tag 'powerpc-4.17-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: Clear PCR on boot |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.