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 --- Documentation/doc-guide/checktransupdate.rst | 54 ++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/doc-guide/checktransupdate.rst (limited to 'Documentation/doc-guide/checktransupdate.rst') diff --git a/Documentation/doc-guide/checktransupdate.rst b/Documentation/doc-guide/checktransupdate.rst new file mode 100644 index 000000000..7b25375cc --- /dev/null +++ b/Documentation/doc-guide/checktransupdate.rst @@ -0,0 +1,54 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Checking for needed translation updates +======================================= + +This script helps track the translation status of the documentation in +different locales, i.e., whether the documentation is up-to-date with +the English counterpart. + +How it works +------------ + +It uses ``git log`` command to track the latest English commit from the +translation commit (order by author date) and the latest English commits +from HEAD. If any differences occur, the file is considered as out-of-date, +then commits that need to be updated will be collected and reported. + +Features implemented + +- check all files in a certain locale +- check a single file or a set of files +- provide options to change output format +- track the translation status of files that have no translation + +Usage +----- + +:: + + tools/docs/checktransupdate.py --help + +Please refer to the output of argument parser for usage details. + +Samples + +- ``tools/docs/checktransupdate.py -l zh_CN`` + This will print all the files that need to be updated in the zh_CN locale. +- ``tools/docs/checktransupdate.py Documentation/translations/zh_CN/dev-tools/testing-overview.rst`` + This will only print the status of the specified file. + +Then the output is something like: + +:: + + Documentation/dev-tools/kfence.rst + No translation in the locale of zh_CN + + Documentation/translations/zh_CN/dev-tools/testing-overview.rst + commit 42fb9cfd5b18 ("Documentation: dev-tools: Add link to RV docs") + 1 commits needs resolving in total + +Features to be implemented + +- files can be a folder instead of only a file -- cgit v1.3.1