From: Xiaoyao Li <xiaoyao...@intel.com> Currently, QEMU always constructs a all-zero CPUID entry for CPUID[0xD 0x3f].
It's meaningless to construct such a leaf as the end of leaf 0xD. Rework the logic of how subleaves of 0xD are constructed to get rid of such all-zero value of subleaf 0x3f. Signed-off-by: Xiaoyao Li <xiaoyao...@intel.com> Link: https://lore.kernel.org/r/20240814075431.339209-2-xiaoyao...@intel.com Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- target/i386/kvm/kvm.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index e6f94900f3c..6f6301460d4 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1864,10 +1864,6 @@ static uint32_t kvm_x86_build_cpuid(CPUX86State *env, case 0xb: case 0xd: for (j = 0; ; j++) { - if (i == 0xd && j == 64) { - break; - } - c->function = i; c->flags = KVM_CPUID_FLAG_SIGNIFCANT_INDEX; c->index = j; @@ -1883,7 +1879,12 @@ static uint32_t kvm_x86_build_cpuid(CPUX86State *env, break; } if (i == 0xd && c->eax == 0) { - continue; + if (j < 63) { + continue; + } else { + cpuid_i--; + break; + } } if (cpuid_i == KVM_MAX_CPUID_ENTRIES) { goto full; -- 2.46.2
