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/phy/starfive/Kconfig | 48 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 drivers/phy/starfive/Kconfig (limited to 'drivers/phy/starfive/Kconfig') diff --git a/drivers/phy/starfive/Kconfig b/drivers/phy/starfive/Kconfig new file mode 100644 index 000000000..d0cdd7cb4 --- /dev/null +++ b/drivers/phy/starfive/Kconfig @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Phy drivers for StarFive platforms +# + +if ARCH_STARFIVE || COMPILE_TEST + +config PHY_STARFIVE_JH7110_DPHY_RX + tristate "StarFive JH7110 D-PHY RX support" + depends on HAS_IOMEM + select GENERIC_PHY + select GENERIC_PHY_MIPI_DPHY + help + Choose this option if you have a StarFive D-PHY in your + system. If M is selected, the module will be called + phy-jh7110-dphy-rx.ko. + +config PHY_STARFIVE_JH7110_DPHY_TX + tristate "StarFive JH7110 D-PHY TX Support" + depends on HAS_IOMEM + select GENERIC_PHY + select GENERIC_PHY_MIPI_DPHY + help + Choose this option if you have a StarFive D-PHY TX in your + system. If M is selected, the module will be called + phy-jh7110-dphy-tx.ko. + +config PHY_STARFIVE_JH7110_PCIE + tristate "Starfive JH7110 PCIE 2.0/USB 3.0 PHY support" + depends on HAS_IOMEM + select GENERIC_PHY + help + Enable this to support the StarFive PCIe 2.0 PHY, + or used as USB 3.0 PHY. + If M is selected, the module will be called + phy-jh7110-pcie.ko. + +config PHY_STARFIVE_JH7110_USB + tristate "Starfive JH7110 USB 2.0 PHY support" + depends on USB_SUPPORT + select GENERIC_PHY + help + Enable this to support the StarFive USB 2.0 PHY, + used with the Cadence USB controller. + If M is selected, the module will be called + phy-jh7110-usb.ko. + +endif # ARCH_STARFIVE || COMPILE_TEST -- cgit v1.3.1