Sean Christopherson af62fe2494 KVM: Harden and prepare for modifying existing guest_memfd memslots ...

Unbind guest_memfd memslots if KVM commits a MOVE or FLAGS_ONLY memslot
change to harden against use-after-free, and to prepare for eventually
supporting dirty logging on guest_memfd memslots, at which point
FLAGS_ONLY changes will be expected/supported.

Add two separate WARNs, once to yell if a guest_memfd memslot is moved
(which KVM is never expected to allow/support), and again if the unbind()
is triggered, to help detect uAPI goofs prior to deliberately allowing
FLAGS_ONLY changes.

Link: https://patch.msgid.link/20251202020334.1171351-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

2025-12-02 08:49:37 -08:00

..

kvm

KVM: Harden and prepare for modifying existing guest_memfd memslots

2025-12-02 08:49:37 -08:00

lib

irqbypass: Require producers to pass in Linux IRQ number during registration

2025-06-20 13:52:41 -07:00

Makefile

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