From: Zhao Liu <zhao1....@intel.com>

Host YongFeng CPU has 0x1f leaf by default, so that enable it for
Guest CPU by default as well.

Suggested-by: Ewan Hai <ewanhai...@zhaoxin.com>
Tested-by: Yi Lai <yi1....@intel.com>
Signed-off-by: Zhao Liu <zhao1....@intel.com>
Link: https://lore.kernel.org/r/20250711104603.1634832-10-zhao1....@intel.com
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 target/i386/cpu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 216e0232df4..4f0c9734461 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6548,8 +6548,12 @@ static const X86CPUDefinition builtin_x86_defs[] = {
             },
             {
                 .version = 3,
-                .note = "with the cache model",
+                .note = "with the cache model and 0x1f leaf",
                 .cache_info = &yongfeng_cache_info,
+                .props = (PropValue[]) {
+                    { "x-force-cpuid-0x1f", "on" },
+                    { /* end of list */ },
+                }
             },
             { /* end of list */ }
         }
-- 
2.50.0


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