On 2/29/2024 2:36 PM, Xiaoyao Li wrote:
Current KVM doesn't support PMU for TD guest. It returns error if TD is
created with PMU bit being set in attributes.
Disable PMU for TD guest on QEMU side.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
target/i386/kvm/tdx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index 262e86fd2c67..1c12cda002b8 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -496,6 +496,8 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp)
g_autofree struct kvm_tdx_init_vm *init_vm = NULL;
int r = 0;
+ object_property_set_bool(OBJECT(cpu), "pmu", false, &error_abort);
Is it necessary to output some prompt if the user wants to enable pmu by
"-cpu host,pmu=on"? As in patch 27, it mentions PMU is configured by
x86cpu->enable_pmu, but PMU is actually not support in this series and
will be disabled silently.