563d5929d5
Improved performance on KVM paravirtualised systems. Testing welcomed; please report successes and issues to: https://reviews.freebsd.org/D29733 kvmclock-kmod is experimental and currently under development. This port provides an easy and quick method for users to test this code for early testing, feedback and bug reports. This driver enables FreeBSD to use a more efficient paravirtualized hardware clock, instead of emulating one, or abusing hypervisor interrupts, when running as a virtualized OS under Linux KVM (Kernel-based Virtual Machine). Reviewed by: allanjude Sponsored by: Klara Inc. Sponsored by: SkunkWerks, GmbH Differential Revision: https://reviews.freebsd.org/D30459 PR: 216759
11 lines
565 B
Text
11 lines
565 B
Text
Development version of kvmclock FreeBSD driver for virtual machines.
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References and prior art:
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https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/chap-kvm_guest_timing_management
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https://www.vmware.com/files/pdf/techpaper/Timekeeping-In-VirtualMachines.pdf
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http://oliveryang.net/2015/09/pitfalls-of-TSC-usage/#33-tsc-emulation-on-different-hypervisors
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https://reviews.freebsd.org/D29531
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216759
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WWW: https://reviews.freebsd.org/D29733
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