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KVM: arm64: Use the bitmap API to allocate bitmaps

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Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/3c5043731db4d3635383e9326bc7e98e25de3288.1681854412.git.christophe.jaillet@wanadoo.fr
This commit is contained in:
Christophe JAILLET 2023-04-18 23:47:38 +02:00 committed by Marc Zyngier
parent 4be8ddb48b
commit a00e9e4319
1 changed files with 2 additions and 3 deletions
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5
arch/arm64/kvm/vmid.c
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@ -182,8 +182,7 @@ int __init kvm_arm_vmid_alloc_init(void)
*/ */
WARN_ON(NUM_USER_VMIDS - 1 <= num_possible_cpus()); WARN_ON(NUM_USER_VMIDS - 1 <= num_possible_cpus());
atomic64_set(&vmid_generation, VMID_FIRST_VERSION); atomic64_set(&vmid_generation, VMID_FIRST_VERSION);
vmid_map = kcalloc(BITS_TO_LONGS(NUM_USER_VMIDS), vmid_map = bitmap_zalloc(NUM_USER_VMIDS, GFP_KERNEL);
sizeof(*vmid_map), GFP_KERNEL);
if (!vmid_map) if (!vmid_map)
return -ENOMEM; return -ENOMEM;
@ -192,5 +191,5 @@ int __init kvm_arm_vmid_alloc_init(void)
void __init kvm_arm_vmid_alloc_free(void) void __init kvm_arm_vmid_alloc_free(void)
{ {
kfree(vmid_map); bitmap_free(vmid_map);
} }