linux-kernel - [PATCH 2/3] KVM: PPC: simplify kvmppc_core_check

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Message-ID: <20250717192418.207114-3-yury.norov@gmail.com>
Date: Thu, 17 Jul 2025 15:24:15 -0400
From: Yury Norov <yury.norov@...il.com>
To: Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Nicholas Piggin <npiggin@...il.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Yury Norov <yury.norov@...il.com>
Subject: [PATCH 2/3] KVM: PPC: simplify kvmppc_core_check_exceptions()

From: Yury Norov (NVIDIA) <yury.norov@...il.com>

The function opencodes for_each_set_bit() macro.

Signed-off-by: Yury Norov (NVIDIA) <yury.norov@...il.com>
---
 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_vcpu *vcpu)
 	unsigned long *pending = &vcpu->arch.pending_exceptions;
 	unsigned int priority;
 
-	priority = __ffs(*pending);
-	while (priority < BOOKE_IRQPRIO_MAX) {
+	for_each_set_bit(priority, pending, BOOKE_IRQPRIO_MAX)
 		if (kvmppc_booke_irqprio_deliver(vcpu, priority))
 			break;
 
-		priority = find_next_bit(pending,
-		                         BITS_PER_BYTE * sizeof(*pending),
-		                         priority + 1);
-	}
-
 	/* Tell the guest about our interrupt status */
 	vcpu->arch.shared->int_pending = !!*pending;
 }
-- 
2.43.0