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

From
Michael Ellerman <mpe@ellerman.id.au>
Date
2024-11-17 12:08:39
Also in
kvm, lkml
Reply to
Gautam Menghani, 2024-10-28
Gautam Menghani [off-list ref] 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
Thread (3 messages) 3 messages, 3 authors, last reply 2024-11-17
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