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Commit cb007648 authored May 12, 2009 by Mark McLoughlin Committed by Avi Kivity Sep 10, 2009

KVM: fix cpuid E2BIG handling for extended request types



If we run out of cpuid entries for extended request types
we should return -E2BIG, just like we do for the standard
request types.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

parent 60af2ecd

arch/x86/kvm/x86.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1506,6 +1506,10 @@ static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
		for (func = 0x80000001; func <= limit && nent < cpuid->nent; ++func)
		do_cpuid_ent(&cpuid_entries[nent], func, 0,
		&nent, cpuid->nent);
		r = -E2BIG;
		if (nent >= cpuid->nent)
		goto out_free;

		r = -EFAULT;
		if (copy_to_user(entries, cpuid_entries,
		nent * sizeof(struct kvm_cpuid_entry2)))