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vgic_get_irq() has an awkward signature, as it takes both a kvm *and* a vcpu, where the vcpu is allowed to be NULL if the INTID being looked up is a global interrupt (SPI or LPI). This leads to potentially problematic situations where the INTID passed is a private interrupt, but that there is no vcpu. In order to make things less ambiguous, let have *two* helpers instead: - vgic_get_irq(struct kvm *kvm, u32 intid), which is only concerned with *global* interrupts, as indicated by the lack of vcpu. - vgic_get_vcpu_irq(struct kvm_vcpu *vcpu, u32 intid), which can return *any* interrupt class, but must have of course a non-NULL vcpu. Most of the code nicely falls under one or the other situations, except for a couple of cases (close to the UABI or in the debug code) where we have to distinguish between the two cases. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20241117165757.247686-3-maz@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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.