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When setting up interrupt remapping for legacy PCI(-X) devices, including PCI(-X) bridges, a lookup of the upstream bridge is required. This lookup, itself involving acquiring of a lock, is done in a context where acquiring that lock is unsafe. This can lead to a deadlock.
Reserved 2025-02-26 | Published 2025-07-17 | Updated 2025-07-17 | Assigner XENxenbits.xenproject.org/xsa/advisory-467.html
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