KVM: SVM: Clear current_vmcb during vCPU free for all *possible* CPUs

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commit 1bee4838eb upstream.

When freeing a vCPU and thus its VMCB, clear current_vmcb for all possible
CPUs, not just online CPUs, as it's theoretically possible a CPU could go
offline and come back online in conjunction with KVM reusing the page for
a new VMCB.

Link: https://lore.kernel.org/all/20250320013759.3965869-1-yosry.ahmed@linux.dev
Fixes: fd65d3142f ("kvm: svm: Ensure an IBPB on all affected CPUs when freeing a vmcb")
Cc: stable@vger.kernel.org
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
[sean: split to separate patch, write changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Yosry Ahmed 2025-04-29 08:32:15 -07:00 • committed by Greg Kroah-Hartman

parent 850931ba01

commit 264edbfc3b

1 changed files with 1 additions and 1 deletions

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arch/x86/kvm/svm/svm.c

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