On Wed, Mar 27, 2019 at 01:15:36PM -0700, Jim Mattson wrote:
> Per the APM, "CPUID Fn8000_001D_E[D,C,B,A]X reports cache topology
> information for the cache enumerated by the value passed to the
> instruction in ECX, referred to as Cache n in the following
> description. To gather information for all cache levels, software must
> repeatedly execute CPUID with 8000_001Dh in EAX and ECX set to
> increasing values beginning with 0 until a value of 00h is returned in
> the field CacheType (EAX[4:0]) indicating no more cache descriptions
> are available for this processor."
>
> The termination condition is the same as leaf 4, so we can reuse that
> code block for leaf 0x8000001d.
>
> Fixes: 8765d75329a38 ("KVM: X86: Extend CPUID range to include new leaf")
> Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Signed-off-by: Jim Mattson <jmattson@xxxxxxxxxx>
> Reviewed-by: Marc Orr <marcorr@xxxxxxxxxx>
> ---
> arch/x86/kvm/cpuid.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Reviewed-by: Borislav Petkov <bp@xxxxxxx>
--
Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
