linux-kernel - [PATCH 1/3] KVM: PPC: simplify kvmppc_core_prepare_to

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Message-ID: <20250717192418.207114-2-yury.norov@gmail.com>
Date: Thu, 17 Jul 2025 15:24:14 -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 1/3] KVM: PPC: simplify kvmppc_core_prepare_to_enter()

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/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 *vcpu)
 	if (vcpu->arch.pending_exceptions)
 		printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 #endif
-	priority = __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 = find_next_bit(pending,
-					 BITS_PER_BYTE * sizeof(*pending),
-					 priority + 1);
 	}
 
 	/* Tell the guest about our interrupt status */
-- 
2.43.0