Kernel

Add

This section of the config is meant to expose the various Kexts in your OC folder. This along with many of the other sections will be auto-filled by simply going to File -> OC Clean Snapshot and going to the OC folder in your OpenCore.img mount point.

Block

Blocks certain Kexts from loading. Not relevant for us.

Emulate

Needed for spoofing unsupported CPUs like Pentiums and Celerons. We won’t need those options. Set DummyPowerManagement to True.

Key Type Value
Cpuid1Data Data <>
Cpuid1Mask Data <>
DummyPowerManagement Boolean True

Force

Used for loading Kexts off system volume, only relevant for older operating systems where certain kexts are not present in the cache, i.e IONetworkingFamily in 10.6.

For us, we can ignore.

Patch

Patches both the kernel and Kexts. We can ignore this section.

Quirks

Don’t skip over this section, we’ll be changing the following:

Quirk Value Description
DisableLinkeditJettison False This option lets Lilu.kext, and possibly other kexts, function in macOS Big Sur at their best performance levels without requiring the keepsyms=1 boot argument.
PanicNoKextDump True Disables dumping of the loaded kexts when a kernel panic occurs, greatly helps with reading the panic output and debugging.
PowerTimeoutKernelPanic True Helps fix kernel panics relating to power timeouts with Apple drivers in OS X Catalina and above, most notably with digital audio.
ProvideCurrentCpuInfo True Provides current CPU info to the kernel. On KVM and other hypervisors it provides precomputed MSR 35h values to avoid some kernel panics.

Scheme

Settings related to legacy booting, but we can change the following.

Key Type Value Description
CustomKernel Boolean False Loads a custom kernel, usually used for unsupported CPUs. Here we spoof the CPU with QEMU so we do not require this.
FuzzyMatch Boolean True Improves Mac OS X 10.6 (Snow Leopard) booting times by utilizing a different algorithm
KernelArch String x86_64 Slightly improves boot performance by hardcoding that we’re booting the kernel in AMD64 mode instead of x86.
KernelCache String Auto Specifies the kernel cache type used, on modern macOS versions, this can be hardcoded to Prelinked to speed up boot times.

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DarwinKVM Docs Version 2.0.0~prerelease
Copyright © 2024 RoyalGraphX. Distributed by a BSD 3-Clause License.
Last Modified: Sat, 7 Sep 2024 18:00:00 CDT