https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216759
and...@azar-a.net changed:
What |Removed |Added
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Attachment #181048| |maintainer-approval+
Flags| |
--- Comment #18 from and...@azar-a.net ---
Created attachment 181048
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=181048&action=edit
tsc.c patch to allow KVM hypervisor with host cpu to pass through the good TSC
This patch is not "correct" because it just whitelists Generic virtualization
(VM_GUEST_VM), however I don't see how it can be done correctly at this point
of overall coding quality in tsc.c regarding virtualization.
I guess a CPU_VENDOR_VIRTUAL should be considered as an option, so we can leave
host pass-through CPU as a real host CPU and allow virtual CPUs like
QEMU_X86_64 or whatever to be treated separately where all ifs and switches are
tested for stability of CPU TSC (that seems to be the Linux approach).
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