[PATCH] KVM: PPC: Book3S HV: Use the bitmap API to allocate bitmaps

[PATCH] KVM: PPC: Book3S HV: Use the bitmap API to allocate bitmaps

[Christophe JAILLET]

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>
---
 arch/powerpc/kvm/book3s_hv_uvmem.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c
index 598006301620..95de5fac6497 100644
--- a/arch/powerpc/kvm/book3s_hv_uvmem.c
+++ b/arch/powerpc/kvm/book3s_hv_uvmem.c
@@ -1187,8 +1187,7 @@ int kvmppc_uvmem_init(void)
 
 	pfn_first = res->start >> PAGE_SHIFT;
 	pfn_last = pfn_first + (resource_size(res) >> PAGE_SHIFT);
-	kvmppc_uvmem_bitmap = kcalloc(BITS_TO_LONGS(pfn_last - pfn_first),
-				      sizeof(unsigned long), GFP_KERNEL);
+	kvmppc_uvmem_bitmap = bitmap_zalloc(pfn_last - pfn_first, GFP_KERNEL);
 	if (!kvmppc_uvmem_bitmap) {
 		ret = -ENOMEM;
 		goto out_unmap;
@@ -1212,5 +1211,5 @@ void kvmppc_uvmem_free(void)
 	memunmap_pages(&kvmppc_uvmem_pgmap);
 	release_mem_region(kvmppc_uvmem_pgmap.range.start,
 			   range_len(&kvmppc_uvmem_pgmap.range));
-	kfree(kvmppc_uvmem_bitmap);
+	bitmap_free(kvmppc_uvmem_bitmap);
 }
-- 
2.34.1

Re: [PATCH] KVM: PPC: Book3S HV: Use the bitmap API to allocate bitmaps

[Michael Ellerman]

On Sat, 9 Jul 2022 17:56:43 +0200, Christophe JAILLET wrote:
> Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.
> 
> It is less verbose and it improves the semantic.
> 
> 

Applied to powerpc/next.

[1/1] KVM: PPC: Book3S HV: Use the bitmap API to allocate bitmaps
      https://git.kernel.org/powerpc/c/a96b20758b23be7e9f693218908228d6100c3c26

cheers