linux-kernel - intel_pmc_core does not initialize intel 8th gen PMC

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Message-ID: <1518426556.26505.2.camel@autistici.org>
Date:   Mon, 12 Feb 2018 10:09:16 +0100
From:   kitestramuort <kitestramuort@...istici.org>
To:     linux-kernel@...r.kernel.org
Subject: intel_pmc_core does not initialize intel 8th gen PMC

Hi,
don't know if this is intended. In 4.15.2 i have:

dmesg:
intel_pmc_core 0000:00:1f.2: enabling device (0000 -> 0002)

lspci:
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev
21)
	Subsystem: Intel Corporation Sunrise Point-LP PMC
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: Memory at dff00000 (32-bit, non-prefetchable)
[size=16K]
	Kernel driver in use: intel_pmc_core


in 4.16.0-rc1 this becomes
dmesg:
intel_pmc_core:  initialized

lspci:
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev
21)
	Subsystem: Intel Corporation Sunrise Point-LP PMC
	Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: Memory at dff00000 (32-bit, non-prefetchable)
[disabled] [size=16K]

regards