https://bugs.winehq.org/show_bug.cgi?id=11908
--- Comment #42 from Artem S. Tashkinov aros@gmx.com --- (In reply to mirh from comment #41)
I know it's only userspace, but that doesn't have to mean you are only unprivileged.
AFAIK /dev/mem is always there available (at least, if that hasn't been disallowed in Kconfig), and AFAICT lspci shows some clocks with sudo and -vvv
/dev/mem is available only for root and like you said it might even be disabled completely.
`lspci -vvv` also requires root access and doesn't really show anything interesting aside from the PCI-E link state.
The Linux kernel has no APIs for exporting low-level CPU/GPU information and Wine developers won't add it either because Windows utilities use their own drivers, so these APIs will be worthless for Wine applications.