On POWER10 bit 12 in the PVR indicates if the core is SMT4 or SMT8. Bit 12 is set for SMT4. Without this patch, /proc/cpuinfo on a SMT4 DD1 POWER10 looks like this: cpu : POWER10, altivec supported revision : 17.0 (pvr 0080 1100) Fixes: a3ea40d5c736 ("powerpc: Add POWER10 architected mode") Cc: stable@vger.kernel.org # v5.8 Signed-off-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200803035600.1820371-1-mikey@neuling.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.
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