[PATCH v3] KVM: PPC: Book3S HV: Mask off LPCR_MER for a vCPU before running it to avoid spurious interrupts

Michael Ellerman mpe at ellerman.id.au
Sun Nov 17 23:08:38 AEDT 2024


Gautam Menghani <gautam at linux.ibm.com> writes:
> Running a L2 vCPU (see [1] for terminology) with LPCR_MER bit set and no
> pending interrupts results in that L2 vCPU getting an infinite flood of
> spurious interrupts. The 'if check' in kvmhv_run_single_vcpu() sets the
> LPCR_MER bit if there are pending interrupts.

Applied to powerpc/fixes.

[1/1] KVM: PPC: Book3S HV: Mask off LPCR_MER for a vCPU before running it to avoid spurious interrupts
      https://git.kernel.org/powerpc/c/a373830f96db288a3eb43a8692b6bcd0bd88dfe1

cheers


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