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 --- arch/mips/bmips/Kconfig | 83 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 arch/mips/bmips/Kconfig (limited to 'arch/mips/bmips/Kconfig') diff --git a/arch/mips/bmips/Kconfig b/arch/mips/bmips/Kconfig new file mode 100644 index 000000000..63dfc6950 --- /dev/null +++ b/arch/mips/bmips/Kconfig @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: GPL-2.0 +if BMIPS_GENERIC + +choice + prompt "Built-in device tree" + help + Legacy bootloaders do not pass a DTB pointer to the kernel, so + if a "wrapper" is not being used, the kernel will need to include + a device tree that matches the target board. + + The builtin DTB will only be used if the firmware does not supply + a valid DTB. + +config DT_NONE + bool "None" + +config DT_BCM93384WVG + bool "BCM93384WVG Zephyr CPU" + select BUILTIN_DTB + +config DT_BCM93384WVG_VIPER + bool "BCM93384WVG Viper CPU (EXPERIMENTAL)" + select BUILTIN_DTB + +config DT_BCM96368MVWG + bool "BCM96368MVWG" + select BUILTIN_DTB + +config DT_BCM9EJTAGPRB + bool "BCM9EJTAGPRB" + select BUILTIN_DTB + +config DT_BCM97125CBMB + bool "BCM97125CBMB" + select BUILTIN_DTB + +config DT_BCM97346DBSMB + bool "BCM97346DBSMB" + select BUILTIN_DTB + +config DT_BCM97358SVMB + bool "BCM97358SVMB" + select BUILTIN_DTB + +config DT_BCM97360SVMB + bool "BCM97360SVMB" + select BUILTIN_DTB + +config DT_BCM97362SVMB + bool "BCM97362SVMB" + select BUILTIN_DTB + +config DT_BCM97420C + bool "BCM97420C" + select BUILTIN_DTB + +config DT_BCM97425SVMB + bool "BCM97425SVMB" + select BUILTIN_DTB + +config DT_BCM97435SVMB + bool "BCM97435SVMB" + select BUILTIN_DTB + +config DT_COMTREND_VR3032U + bool "Comtrend VR-3032u" + select BUILTIN_DTB + +config DT_NETGEAR_CVG834G + bool "NETGEAR CVG834G" + select BUILTIN_DTB + +config DT_SFR_NEUFBOX4_SERCOMM + bool "SFR Neufbox 4 (Sercomm)" + select BUILTIN_DTB + +config DT_SFR_NEUFBOX6_SERCOMM + bool "SFR Neufbox 6 (Sercomm)" + select BUILTIN_DTB + +endchoice + +endif -- cgit v1.3.1