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Thu, 17 Jul 2025 12:24:27 -0700 (PDT) From: Yury Norov To: Madhavan Srinivasan , Nicholas Piggin , Michael Ellerman , Christophe Leroy , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Yury Norov Subject: [PATCH 1/3] KVM: PPC: simplify kvmppc_core_prepare_to_enter() Date: Thu, 17 Jul 2025 15:24:14 -0400 Message-ID: <20250717192418.207114-2-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250717192418.207114-1-yury.norov@gmail.com> References: <20250717192418.207114-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yury Norov (NVIDIA) The function opencodes for_each_set_bit() macro. Signed-off-by: Yury Norov (NVIDIA) --- arch/powerpc/kvm/book3s.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index d79c5d1098c0..dc05ea496aad 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -401,17 +401,12 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcp= u) if (vcpu->arch.pending_exceptions) printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_except= ions); #endif - priority =3D __ffs(*pending); - while (priority < BOOK3S_IRQPRIO_MAX) { + for_each_set_bit(priority, pending, BOOK3S_IRQPRIO_MAX) { if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && clear_irqprio(vcpu, priority)) { clear_bit(priority, &vcpu->arch.pending_exceptions); break; } - - priority =3D find_next_bit(pending, - BITS_PER_BYTE * sizeof(*pending), - priority + 1); } =20 /* Tell the guest about our interrupt status */ --=20 2.43.0 From nobody Mon Oct 6 18:49:05 2025 Received: from mail-pf1-f182.google.com (mail-pf1-f182.google.com [209.85.210.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 781F62F7D0D; 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Signed-off-by: Yury Norov (NVIDIA) --- arch/powerpc/kvm/booke.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 3401b96be475..1fe2592c2022 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -692,16 +692,10 @@ static void kvmppc_core_check_exceptions(struct kvm_v= cpu *vcpu) unsigned long *pending =3D &vcpu->arch.pending_exceptions; unsigned int priority; =20 - priority =3D __ffs(*pending); - while (priority < BOOKE_IRQPRIO_MAX) { + for_each_set_bit(priority, pending, BOOKE_IRQPRIO_MAX) if (kvmppc_booke_irqprio_deliver(vcpu, priority)) break; =20 - priority =3D find_next_bit(pending, - BITS_PER_BYTE * sizeof(*pending), - priority + 1); - } - /* Tell the guest about our interrupt status */ vcpu->arch.shared->int_pending =3D !!*pending; } --=20 2.43.0 From nobody Mon Oct 6 18:49:05 2025 Received: from mail-pf1-f178.google.com (mail-pf1-f178.google.com [209.85.210.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6B1C2F7CEE; 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Thu, 17 Jul 2025 12:24:35 -0700 (PDT) Received: from localhost ([216.228.127.129]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74eb9f1b2f6sm17245711b3a.99.2025.07.17.12.24.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Jul 2025 12:24:34 -0700 (PDT) From: Yury Norov To: Madhavan Srinivasan , Nicholas Piggin , Michael Ellerman , Christophe Leroy , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Yury Norov Subject: [PATCH 3/3] KVM: PPC: use for_each_set_bit() in IRQ_check() Date: Thu, 17 Jul 2025 15:24:16 -0400 Message-ID: <20250717192418.207114-4-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250717192418.207114-1-yury.norov@gmail.com> References: <20250717192418.207114-1-yury.norov@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yury Norov (NVIDIA) The function opencodes for_each_set_bit() macro. Signed-off-by: Yury Norov (NVIDIA) --- arch/powerpc/kvm/mpic.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c index 23e9c2bd9f27..ae68b213f0f9 100644 --- a/arch/powerpc/kvm/mpic.c +++ b/arch/powerpc/kvm/mpic.c @@ -290,15 +290,11 @@ static inline void IRQ_resetbit(struct irq_queue *q, = int n_IRQ) =20 static void IRQ_check(struct openpic *opp, struct irq_queue *q) { - int irq =3D -1; + int irq; int next =3D -1; int priority =3D -1; =20 - for (;;) { - irq =3D find_next_bit(q->queue, opp->max_irq, irq + 1); - if (irq =3D=3D opp->max_irq) - break; - + for_each_set_bit(irq, q->queue, opp->max_irq) { pr_debug("IRQ_check: irq %d set ivpr_pr=3D%d pr=3D%d\n", irq, IVPR_PRIORITY(opp->src[irq].ivpr), priority); =20 --=20 2.43.0