At least Linux x86 ABI's does not use carry bit and expects that the dx register is preserved. For this add a new sv_set_fork_retval hook and call it from cpu_fork(). Add a short comment about touching dx in x86_set_fork_retval(), for more details see phab comments from kib@ and imp@. Reviewed by: kib Differential revision: https://reviews.freebsd.org/D31472 MFC after: 2 weeks |
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acpica | ||
bios | ||
conf | ||
cpufreq | ||
include | ||
iommu | ||
isa | ||
linux | ||
pci | ||
x86 | ||
xen |