3d2ffcdd2a
POWER10 DD1 has an issue where it generates watchpoint exceptions when it shouldn't. The conditions where this occur are: - octword op - ending address of DAWR range is less than starting address of op - those addresses need to be in the same or in two consecutive 512B blocks - 'op address + 64B' generates an address that has a carry into bit 52 (crosses 2K boundary) Handle such spurious exception by considering them as extraneous and emulating/single-steeping instruction without generating an event. [ravi: Fixed build warning reported by lkp@intel.com] Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201106045650.278987-1-ravi.bangoria@linux.ibm.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.