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| author | Sean Christopherson <seanjc@google.com> | 2026-09-23 09:37:21 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2026-09-26 00:39:55 -0400 |
| commit | 93de2a6a4b91b72607136dd656edf03fb399d27f (patch) | |
| tree | 9220c76eb23cb39a146fac9692ee69afa4aa3135 /drivers/soc/xilinx/Kconfig | |
| download | linux-stable-93de2a6a4b91b72607136dd656edf03fb399d27f.tar.gz linux-stable-93de2a6a4b91b72607136dd656edf03fb399d27f.zip | |
KVM: SEV: Do cache maintenance on the source VM during intra-host migrationgrafted
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 <fane@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20260923163721.1584779-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'drivers/soc/xilinx/Kconfig')
| -rw-r--r-- | drivers/soc/xilinx/Kconfig | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/soc/xilinx/Kconfig b/drivers/soc/xilinx/Kconfig new file mode 100644 index 000000000..49d69d6e1 --- /dev/null +++ b/drivers/soc/xilinx/Kconfig @@ -0,0 +1,29 @@ +# SPDX-License-Identifier: GPL-2.0 +menu "Xilinx SoC drivers" + +config ZYNQMP_POWER + bool "Enable Xilinx Zynq MPSoC Power Management driver" + depends on PM && ZYNQMP_FIRMWARE + default y + select MAILBOX + select ZYNQMP_IPI_MBOX + help + Say yes to enable power management support for ZyqnMP SoC. + This driver uses firmware driver as an interface for power + management request to firmware. It registers isr to handle + power management callbacks from firmware. It registers mailbox client + to handle power management callbacks from firmware. + + If in doubt, say N. + +config XLNX_EVENT_MANAGER + bool "Enable Xilinx Event Management Driver" + depends on ZYNQMP_FIRMWARE + default ZYNQMP_FIRMWARE + help + Say yes to enable event management support for Xilinx. + This driver uses firmware driver as an interface for event/power + management request to firmware. + + If in doubt, say N. +endmenu |