mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-09-17 09:41:09 +02:00
Sandipan Das
57e11990f4
For uncore PMUs, a single context is shared across all CPUs in a domain. The domain can be a CCX, like in the case of the L3 PMU, or a socket, like in the case of DF and UMC PMUs. This information is available via the PMU's cpumask. For contexts shared across a socket, the domain is currently determined from topology_die_id() which is incorrect after the introduction of commit63edbaa48a("x86/cpu/topology: Add support for the AMD 0x80000026 leaf") as it now returns a CCX identifier on Zen 4 and later systems which support CPUID leaf 0x80000026. Use topology_logical_package_id() instead as it always returns a socket identifier irrespective of the availability of CPUID leaf 0x80000026. Fixes:63edbaa48a("x86/cpu/topology: Add support for the AMD 0x80000026 leaf") Signed-off-by: Sandipan Das <sandipan.das@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20240626074942.1044818-1-sandipan.das@amd.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 reStructuredText 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.