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- Handle the case where x2APIC is enabled and locked by the BIOS on a
kernel with CONFIG_X86_X2APIC=n gracefully. Instead of a panic which
does not make it to the graphical console during very early boot,
simply disable the local APIC completely and boot with the PIC and very
limited functionality, which allows to diagnose the issue.
- Convert x86 APIC device tree bindings to YAML
- Extend x86 APIC device tree bindings to configure interrupt delivery
mode and handle this in during init. This allows to boot with device
tree on platforms which lack a legacy PIC.
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Merge tag 'x86-apic-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic update from Thomas Gleixner:
"A set of changes for the x86 APIC code:
- Handle the case where x2APIC is enabled and locked by the BIOS on a
kernel with CONFIG_X86_X2APIC=n gracefully.
Instead of a panic which does not make it to the graphical console
during very early boot, simply disable the local APIC completely
and boot with the PIC and very limited functionality, which allows
to diagnose the issue
- Convert x86 APIC device tree bindings to YAML
- Extend x86 APIC device tree bindings to configure interrupt
delivery mode and handle this in during init. This allows to boot
with device tree on platforms which lack a legacy PIC"
* tag 'x86-apic-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/of: Add support for boot time interrupt delivery mode configuration
x86/of: Replace printk(KERN_LVL) with pr_lvl()
dt-bindings: x86: apic: Introduce new optional bool property for lapic
dt-bindings: x86: apic: Convert Intel's APIC bindings to YAML schema
x86/of: Remove unused early_init_dt_add_memory_arch()
x86/apic: Handle no CONFIG_X86_X2APIC on systems with x2APIC enabled by BIOS
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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.