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504dba50b0
Some hypervisor interrupts (such as for Hyper-V VMbus and Hyper-V timers) have hardcoded interrupt vectors on x86 and don't have Linux IRQs assigned. These interrupts are shown in /proc/interrupts, but are not reported in the first field of the "intr" line in /proc/stat because the x86 version of arch_irq_stat_cpu() doesn't include them. Fix this by adding code to arch_irq_stat_cpu() to include these interrupts, similar to existing interrupts that don't have Linux IRQs. Use #if IS_ENABLED() because unlike all the other nearby #ifdefs, CONFIG_HYPERV can be built as a module. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/all/1677523568-50263-1-git-send-email-mikelley%40microsoft.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 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.