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[ Upstream commit8fac67ca23] After new memory blocks have been hotplugged, max_pfn and max_low_pfn needs updating to reflect on new PFNs being hot added to system. Without this patch, debug-related functions that use max_pfn such as get_max_dump_pfn() or read_page_owner() will not work with any page in memory that is hot-added after boot. Fixes:4ab2150615("arm64: Add memory hotplug support") Signed-off-by: Sudarshan Rajagopalan <quic_sudaraja@quicinc.com> Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Georgi Djakov <quic_c_gdjako@quicinc.com> Tested-by: Georgi Djakov <quic_c_gdjako@quicinc.com> Link: https://lore.kernel.org/r/a51a27ee7be66024b5ce626310d673f24107bcb8.1632853776.git.quic_cgoldswo@quicinc.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.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.