From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- Documentation/ABI/testing/sysfs-class-net-phydev | 75 ++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-net-phydev (limited to 'Documentation/ABI/testing/sysfs-class-net-phydev') diff --git a/Documentation/ABI/testing/sysfs-class-net-phydev b/Documentation/ABI/testing/sysfs-class-net-phydev new file mode 100644 index 000000000..31615c59b --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-net-phydev @@ -0,0 +1,75 @@ +What: /sys/class/mdio_bus///attached_dev +Date: May 2017 +KernelVersion: 4.13 +Contact: netdev@vger.kernel.org +Description: + Symbolic link to the network device this PHY device is + attached to. + +What: /sys/class/mdio_bus///phy_has_fixups +Date: February 2014 +KernelVersion: 3.15 +Contact: netdev@vger.kernel.org +Description: + This attribute contains the boolean value whether a given PHY + device has had any "fixup" workaround running on it, encoded as + a boolean. This information is provided to help troubleshooting + PHY configurations. + +What: /sys/class/mdio_bus///phy_id +Date: November 2012 +KernelVersion: 3.8 +Contact: netdev@vger.kernel.org +Description: + This attribute contains the 32-bit PHY Identifier as reported + by the device during bus enumeration, encoded in hexadecimal. + This ID is used to match the device with the appropriate + driver. + +What: /sys/class/mdio_bus///c45_phy_ids/mmd_device_id +Date: June 2025 +KernelVersion: 6.17 +Contact: netdev@vger.kernel.org +Description: + This attribute contains the 32-bit PHY Identifier as reported + by the device during bus enumeration, encoded in hexadecimal. + These C45 IDs are used to match the device with the appropriate + driver. These files are invisible to the C22 device. + +What: /sys/class/mdio_bus///phy_interface +Date: February 2014 +KernelVersion: 3.15 +Contact: netdev@vger.kernel.org +Description: + This attribute contains the PHY interface as configured by the + Ethernet driver during bus enumeration, encoded in string. + This interface mode is used to configure the Ethernet MAC with the + appropriate mode for its data lines to the PHY hardware. + + Possible values are: + + (not available), mii, gmii, sgmii, tbi, rev-mii, + rmii, rgmii, rgmii-id, rgmii-rxid, rgmii-txid, rtbi, smii + xgmii, moca, qsgmii, trgmii, 1000base-x, 2500base-x, rxaui, + xaui, 10gbase-kr, unknown + +What: /sys/class/mdio_bus///phy_standalone +Date: May 2019 +KernelVersion: 5.3 +Contact: netdev@vger.kernel.org +Description: + Boolean value indicating whether the PHY device is used in + standalone mode, without a net_device associated, by PHYLINK. + Attribute created only when this is the case. + +What: /sys/class/mdio_bus///phy_dev_flags +Date: March 2021 +KernelVersion: 5.13 +Contact: netdev@vger.kernel.org +Description: + 32-bit hexadecimal number representing a bit mask of the + configuration bits passed from the consumer of the PHY + (Ethernet MAC, switch, etc.) to the PHY driver. The flags are + only used internally by the kernel and their placement are + not meant to be stable across kernel versions. This is intended + for facilitating the debugging of PHY drivers. -- cgit v1.3.1