[PATCH 1/2] KVM: arm64: Slightly optimize flush_context()

From: Christophe JAILLET
Date: Tue Apr 18 2023 - 17:48:14 EST


bitmap_zero() is faster than bitmap_clear(), so use it to save a few
cycles.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
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 08978d0672e7..bbf0677cfefa 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);
--
2.34.1