From: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
To: Amit Machhiwal <amachhiw@linux.ibm.com>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Cc: Amit Machhiwal <amachhiw@linux.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
kvm-ppc@vger.kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Gautam Menghani <gautam@linux.ibm.com>,
Harsh Prateek Bora <harshpb@linux.ibm.com>,
R Nageswara Sastry <rnsastry@linux.ibm.com>,
Alexander Graf <agraf@suse.de>,
linux-hardening@vger.kernel.org, stable@vger.kernel.org,
Avi Kivity <avi@redhat.com>
Subject: Re: [RESEND PATCH 2/3] KVM: PPC: Book3S HV: Add preempt_disable() around virtual-mode HPTE bit-lock users
Date: Mon, 28 Sep 2026 19:12:53 +0530 [thread overview]
Message-ID: <tsn9jxuq.ritesh.list@gmail.com> (raw)
In-Reply-To: <20260928122837.8782-3-amachhiw@linux.ibm.com>
Amit Machhiwal <amachhiw@linux.ibm.com> writes:
> kvmppc_hv_find_lock_hpte() requires virtual-mode callers to run with
> preemption disabled, because it can return with HPTE_V_HVLOCK still held
> until the caller later unlocks the HPTE. Existing virtual-mode callers
> in book3s_64_mmu_hv.c already follow that rule.
>
That make sense. LGTM. Please feel free to add:
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
next prev parent reply other threads:[~2026-09-28 13:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-28 12:28 [RESEND PATCH 0/3] KVM: PPC: Fixes for Book3S HV HPT locking and paired-single decoding Amit Machhiwal
2026-09-28 12:28 ` [RESEND PATCH 1/3] KVM: PPC: Book3S HV: Add SRCU protection for virtual-mode HPT hcalls Amit Machhiwal
2026-09-28 13:27 ` Ritesh Harjani
2026-09-28 12:28 ` [RESEND PATCH 2/3] KVM: PPC: Book3S HV: Add preempt_disable() around virtual-mode HPTE bit-lock users Amit Machhiwal
2026-09-28 13:42 ` Ritesh Harjani [this message]
2026-09-29 6:18 ` Shrikanth Hegde
2026-09-30 13:38 ` Amit Machhiwal
2026-09-28 12:28 ` [RESEND PATCH 3/3] KVM: PPC: Fix get_d_signext() 12-bit displacement for paired-single D-form Amit Machhiwal
2026-10-12 3:31 ` [RESEND PATCH 0/3] KVM: PPC: Fixes for Book3S HV HPT locking and paired-single decoding Madhavan Srinivasan
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