Re: [PATCH 2/2] KVM: x86: Fix a typo about the usage of kvcalloc()

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On 11/3/22 02:17, Liao Chang wrote:
Swap the 1st and 2nd arguments to be consistent with the usage of
kvcalloc().

Fixes: c9b8fecddb5b ("KVM: use kvcalloc for array allocations")
Signed-off-by: Liao Chang<liaochang1@xxxxxxxxxx>
---
  arch/x86/kvm/cpuid.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 7065462378e2..b33c18b142c2 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1331,7 +1331,7 @@ int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
  	if (sanity_check_entries(entries, cpuid->nent, type))
  		return -EINVAL;
- array.entries = kvcalloc(sizeof(struct kvm_cpuid_entry2), cpuid->nent, GFP_KERNEL);
+	array.entries = kvcalloc(cpuid->nent, sizeof(struct kvm_cpuid_entry2), GFP_KERNEL);
  	if (!array.entries)
  		return -ENOMEM;

It doesn't make any difference, but scripts/checkpatch.pl checks it so
let's fix the sole occurrence in KVM.

However, please send a patch to scripts/checkpatch.pl to include calloc(),
kvmalloc_array and kvcalloc() in the matched functions:

# check for alloc argument mismatch
                if ($line =~ /\b((?:devm_)?(?:kcalloc|kmalloc_array))\s*\(\s*sizeof\b/) {
                        WARN("ALLOC_ARRAY_ARGS",
                             "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
                }


Paolo




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