From 4be8ddb48b1b6c6067fb59c846b9c6e19d6efe14 Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Tue, 18 Apr 2023 23:47:37 +0200
Subject: [PATCH] KVM: arm64: Slightly optimize flush_context()
bitmap_zero() is faster than bitmap_clear(), so use it to save a few
cycles.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/97bf2743f3a302b3066aced02218b9da60690dd3.1681854412.git.christophe.jaillet@wanadoo.fr
---
arch/arm64/kvm/vmid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/vmid.c b/arch/arm64/kvm/vmid.c
index 08978d0672e7e..bbf0677cfefa9 100644
--- a/arch/arm64/kvm/vmid.c
+++ b/arch/arm64/kvm/vmid.c
@@ -47,7 +47,7 @@ static void flush_context(void)
int cpu;
u64 vmid;
- bitmap_clear(vmid_map, 0, NUM_USER_VMIDS);
+ bitmap_zero(vmid_map, NUM_USER_VMIDS);
for_each_possible_cpu(cpu) {
vmid = atomic64_xchg_relaxed(&per_cpu(active_vmids, cpu), 0);
--
2.30.2