mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-13 16:04:45 -04:00
d99ad3c842
Instead of an explicit GUEST_SYNC() after each access+#PF, run another thread that keeps sending SIGUSR to the vCPU thread, essentially triggering exits to userspace and save+restore on random points in guest execution. This makes the test a lot more meaningful as it opens the door to exercising race conditions between #PF handling in the guest and save+restore in the host. The signals are ignored using SIG_IGN outside of __vcpu_run() to avoid interrupting other ioctls/sysctls performed by the test. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Yosry Ahmed <yosry@kernel.org> Link: https://patch.msgid.link/20260728174232.2423257-12-yosry@kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com>