From 93de2a6a4b91b72607136dd656edf03fb399d27f Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Wed, 23 Sep 2026 09:37:21 -0700 Subject: KVM: SEV: Do cache maintenance on the source VM during intra-host migration Manually perform cache maintenance on the source VM during intra-host migration to ensure no stale data is left in CPU caches after the VM is destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's memory reclaim flows won't trigger cache maintenance, e.g. when all guest memory is reclaimed in response to detaching from the mmu_notifier. Note, relying on the destination VM to do cache maintenance isn't an option as KVM doesn't require identical guest memory configurations, i.e. the source VM may have access to memory that the destination VM does not. Enforcing equivalent memory configurations is infeasible, as it would require a *deep* comparison of memslots, e.g. to verify that not only are the memslot identical, but what the memslots point at is also identical. Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration") Cc: stable@vger.kernel.org Reported-by: Stefan Teodorescu Signed-off-by: Sean Christopherson Message-ID: <20260923163721.1584779-3-seanjc@google.com> Signed-off-by: Paolo Bonzini --- drivers/usb/phy/Kconfig | 163 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 drivers/usb/phy/Kconfig (limited to 'drivers/usb/phy/Kconfig') diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig new file mode 100644 index 000000000..b7acf3966 --- /dev/null +++ b/drivers/usb/phy/Kconfig @@ -0,0 +1,163 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Physical Layer USB driver configuration +# +menu "USB Physical Layer drivers" + +config USB_PHY + select EXTCON + def_bool n + +# +# USB Transceiver Drivers +# +config AB8500_USB + tristate "AB8500 USB Transceiver Driver" + depends on AB8500_CORE + select USB_PHY + help + Enable this to support the USB OTG transceiver in AB8500 chip. + This transceiver supports high and full speed devices plus, + in host mode, low speed. + +config FSL_USB2_OTG + tristate "Freescale USB OTG Transceiver Driver" + depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM=y && PM + depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' + select USB_PHY + help + Enable this to support Freescale USB OTG transceiver. + +config KEYSTONE_USB_PHY + tristate "Keystone USB PHY Driver" + depends on ARCH_KEYSTONE || COMPILE_TEST + depends on NOP_USB_XCEIV + help + Enable this to support Keystone USB phy. This driver provides + interface to interact with USB 2.0 and USB 3.0 PHY that is part + of the Keystone SOC. + +config NOP_USB_XCEIV + tristate "NOP USB Transceiver Driver" + depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, NOP can't be built-in + select USB_PHY + help + This driver is to be used by all the usb transceiver which are either + built-in with usb ip or which are autonomous and doesn't require any + phy programming such as ISP1x04 etc. + +config AM335X_CONTROL_USB + tristate + +config AM335X_PHY_USB + tristate "AM335x USB PHY Driver" + depends on ARM || COMPILE_TEST + depends on NOP_USB_XCEIV + select USB_PHY + select AM335X_CONTROL_USB + select USB_COMMON + help + This driver provides PHY support for that phy which part for the + AM335x SoC. + +config TWL6030_USB + tristate "TWL6030 USB Transceiver Driver" + depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS + depends on OF + help + Enable this to support the USB OTG transceiver on TWL6030 + family chips. This TWL6030 transceiver has the VBUS and ID GND + and OTG SRP events capabilities. For all other transceiver functionality + UTMI PHY is embedded in OMAP4430. The internal PHY configurations APIs + are hooked to this driver through platform_data structure. + The definition of internal PHY APIs are in the mach-omap2 layer. + +config USB_GPIO_VBUS + tristate "GPIO based peripheral-only VBUS sensing 'transceiver'" + depends on GPIOLIB || COMPILE_TEST + depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' + depends on !USB_CONN_GPIO + select USB_PHY + help + Provides simple GPIO VBUS sensing for controllers with an + internal transceiver via the usb_phy interface, and + optionally control of a D+ pullup GPIO as well as a VBUS + current limit regulator. This driver is for devices that do + NOT support role switch. OTG devices that can do role switch + (master/peripheral) shall use the USB based connection + detection driver USB_CONN_GPIO. + +config OMAP_OTG + tristate "OMAP USB OTG controller driver" + depends on ARCH_OMAP_OTG && EXTCON + help + Enable this to support some transceivers on OMAP1 platforms. OTG + controller is needed to switch between host and peripheral modes. + + This driver can also be built as a module. If so, the module + will be called phy-omap-otg. + +config TAHVO_USB + tristate "Tahvo USB transceiver driver" + depends on MFD_RETU + depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' + select USB_PHY + help + Enable this to support USB transceiver on Tahvo. This is used + at least on Nokia 770. + +config TAHVO_USB_HOST_BY_DEFAULT + depends on TAHVO_USB + bool "Device in USB host mode by default" + help + Say Y here, if you want the device to enter USB host mode + by default on bootup. + +config USB_ISP1301 + tristate "NXP ISP1301 USB transceiver support" + depends on USB || USB_GADGET + depends on I2C + select USB_PHY + help + Say Y here to add support for the NXP ISP1301 USB transceiver driver. + This chip is typically used as USB transceiver for USB host, gadget + and OTG drivers (to be selected separately). + + To compile this driver as a module, choose M here: the + module will be called phy-isp1301. + +config USB_MXS_PHY + tristate "Freescale MXS USB PHY support" + depends on ARCH_MXC || ARCH_MXS + select STMP_DEVICE + select USB_PHY + help + Enable this to support the Freescale MXS USB PHY. + + MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x. + +config USB_TEGRA_PHY + tristate "NVIDIA Tegra USB PHY Driver" + depends on ARCH_TEGRA || COMPILE_TEST + select USB_COMMON + select USB_PHY + select USB_ULPI + help + This driver provides PHY support for the USB controllers found + on NVIDIA Tegra SoC's. + +config USB_ULPI + bool "Generic ULPI Transceiver Driver" + depends on ARM || ARM64 || COMPILE_TEST + select USB_ULPI_VIEWPORT + help + Enable this to support ULPI connected USB OTG transceivers which + are likely found on embedded boards. + +config USB_ULPI_VIEWPORT + bool + help + Provides read/write operations to the ULPI phy register set for + controllers with a viewport register (e.g. Chipidea/ARC controllers). + +endmenu -- cgit v1.3.1