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0005ca2076
SAP's vSMP MemoryONE continuously requests a local APIC timer period less than 500 us, resulting in the following kernel log spam: kvm: vcpu 15: requested 70240 ns lapic timer period limited to 500000 ns kvm: vcpu 19: requested 52848 ns lapic timer period limited to 500000 ns kvm: vcpu 15: requested 70256 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 70256 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 70208 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 387520 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 70160 ns lapic timer period limited to 500000 ns kvm: vcpu 66: requested 205744 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 70224 ns lapic timer period limited to 500000 ns kvm: vcpu 9: requested 70256 ns lapic timer period limited to 500000 ns limit_periodic_timer_frequency: 7569 callbacks suppressed ... To eliminate this spam, change the pr_info_ratelimited() in limit_periodic_timer_frequency() to pr_info_once(). Reported-by: James Houghton <jthoughton@google.com> Signed-off-by: Jim Mattson <jmattson@google.com> Message-ID: <20240724190640.2449291-1-jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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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 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.