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d24dde74f7
Add a basic stress test for handling #PFs in a guest while the host is doing save+restore cycles. The guest periodically accesses non-present memory causing a #PF, and the #PF handler walks the page tables and updates the PTE to be present, like a proper #PF handler. After every access (and #PF), the guest triggers a sync and the test performs save+restore of the VM. This is not very meaningful as save+restore are performed after the access and #PF handling complete, but following changes will change that. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-11-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>