From: Michael Ellerman <mpe@ellerman.id.au>
To: Gautam Menghani <gautam@linux.ibm.com>,
npiggin@gmail.com, christophe.leroy@csgroup.eu,
naveen@kernel.org, maddy@linux.ibm.com
Cc: Gautam Menghani <gautam@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] KVM: PPC: Book3S HV: Mask off LPCR_MER for a vCPU before running it to avoid spurious interrupts
Date: Sun, 17 Nov 2024 23:08:38 +1100 [thread overview]
Message-ID: <87jzd2xdtl.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20241028090411.34625-1-gautam@linux.ibm.com>
Gautam Menghani <gautam@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
prev parent reply other threads:[~2024-11-17 12:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-28 9:04 [PATCH v3] KVM: PPC: Book3S HV: Mask off LPCR_MER for a vCPU before running it to avoid spurious interrupts Gautam Menghani
2024-11-07 4:16 ` Ritesh Harjani (IBM)
2024-11-17 12:08 ` Michael Ellerman [this message]
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