[Bug 225629] lang/gcc5: Fails to build on powerpc64 (POWER9)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225629

Nathan Whitehorn <nwhitehorn at FreeBSD.org> changed:

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                 CC|                            |nwhitehorn at FreeBSD.org

--- Comment #11 from Nathan Whitehorn <nwhitehorn at FreeBSD.org> ---
Do you see a message like this in your dmesg?
WARNING: Running on a broken hypervisor that does not support mandatory
H_CLEAR_MOD and H_CLEAR_REF hypercalls. Performance will be suboptimal.

If so, could you try enabling those hypercalls in qemu (the kernel supports
them on any reasonably recent kernel)? We really need them for the VM system to
work and the workaround for older broken kernels/QEMU releases is a bit of hack
and may cause memory corruption under load.

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