Enable the Bus Lock Detect feature for the EPYC-Turin-v2 CPU model to match the hardware capabilities of AMD Turin processors. This feature allows detection of split locks and bus locks, which can cause performance degradation in multi-core systems.
The bus-lock-detect feature is part of the architectural capabilities exposed through CPUID and should be enabled by default for Turin v2 and later CPU models. Signed-off-by: Shivansh Dhiman <[email protected]> --- target/i386/cpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 12500d6b7bed..660b9c2a98b6 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6748,6 +6748,7 @@ static const X86CPUDefinition builtin_x86_defs[] = { .version = 2, .props = (PropValue[]) { { "x-force-cpuid-0x80000026", "on" }, + { "bus-lock-detect", "on" }, { /* end of list */ } } }, -- 2.43.0
