drivers: hv: clear halt when injecting SNP interrupts#150
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Pull request overview
This PR fixes SEV-SNP interrupt wakeup behavior by ensuring a vCPU previously marked as halted is un-halted when pending interrupts are observed in the Secure AVIC (vAPIC) IRR, allowing VTL0 to resume execution instead of remaining in native_safe_halt().
Changes:
- Add an SNP-specific helper to clear
HALT_*offload flags (andMSHV_VTL_RUN_FLAG_HALTEDwhen applicable) when IRR indicates a pending interrupt. - Invoke that helper after pulling
proxy_irrinto the SNP Secure AVIC page in the interrupt-injection fast path.
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When processing interrupts in the SNP path, be sure to clear the HALT flag when waking VTL0.
Signed-off-by: Brian Perkins bperkins@microsoft.com