From: sashiko-bot@kernel.org
To: "Sasha Levin" <sashal@kernel.org>
Cc: linux-pci@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 6.18-5.10] PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX
Date: Mon, 19 Oct 2026 14:50:28 +0000 [thread overview]
Message-ID: <sashiko-outbox-177518@kernel.org> (raw)
In-Reply-To: <20261019135441.1420968-288-sashal@kernel.org>
> From: Ali Alaei <ali.alaei.tabatabaei@gmail.com>
>
> [ Upstream commit 72b32eccbcd591b9606edacf3bd7c455176d7660 ]
>
> On Intel Arrow Lake-HX systems (e.g. Core Ultra 9 275HX on Acer Predator
> PH16-73), the VMD controller reports BUS_RESTRICT_CFG = 3 in the VMCONFIG
> register. The existing switch statement only handled values 0, 1, and 2,
> causing vmd_get_bus_number_start() to return -ENODEV and aborting the
> entire VMD probe. This leaves NVMe drives behind the VMD controller
> invisible to the kernel.
>
> Hardware registers (VMCAP/VMCONFIG at offsets 0x40/0x44):
>
> VMD 0000:00:0e.0 (8086:ad0b): VMCAP=0x000f, VMCONFIG=0x03b8
> BUS_RESTRICT_CFG(0x03b8) = (0x03b8 >> 8) & 0x3 = 3
> [ ... ]
> Signed-off-by: Ali Alaei <ali.alaei.tabatabaei@gmail.com>
> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
> Link: https://patch.msgid.link/20260628143450.92492-1-ali.alaei.tabatabaei@gmail.com
> Signed-off-by: Sasha Levin <sashal@kernel.org>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261019135441.1420968-288-sashal@kernel.org?part=1
next prev parent reply other threads:[~2026-10-19 14:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20261019135441.1420968-1-sashal@kernel.org>
2026-10-19 13:45 ` [PATCH AUTOSEL 6.18-6.1] PCI: switchtec: Add Microchip PCI1008 to NTB DMA alias quirk Sasha Levin
2026-10-19 14:06 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18-5.10] PCI: cadence: Add missing MODULE_DEVICE_TABLE() Sasha Levin
2026-10-19 14:19 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18-6.1] PCI: switchtec: Add Microchip PCI1008 device ID Sasha Levin
2026-10-19 14:14 ` sashiko-bot
2026-10-19 13:46 ` [PATCH AUTOSEL 6.18] PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs Sasha Levin
2026-10-19 14:20 ` sashiko-bot
2026-10-19 13:48 ` [PATCH AUTOSEL 6.18-6.1] PCI: Avoid saving config space state if inaccessible Sasha Levin
2026-10-19 14:41 ` sashiko-bot
2026-10-19 13:48 ` [PATCH AUTOSEL 6.18-5.10] PCI/portdrv: Allow probing even without child services Sasha Levin
2026-10-19 14:40 ` sashiko-bot
2026-10-19 13:49 ` [PATCH AUTOSEL 6.18-5.10] PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX Sasha Levin
2026-10-19 14:50 ` sashiko-bot [this message]
2026-10-19 13:52 ` [PATCH AUTOSEL 6.18-5.10] PCI/ATS: Ensure pci_ats_supported() is PF-aware for VFs Sasha Levin
2026-10-19 15:18 ` sashiko-bot
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