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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2025 10:17:44.7623 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5f4911fd-f188-471f-5ffd-08de0a41c044 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000055E0.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7495 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1760351216483158500 Content-Type: text/plain; charset="utf-8" Helper domctl_lock_{acquire,release} is domctl_lock, which HVM_PARAM_IDENT_= PT uses to ensure synchronization and hence being a toolstack-only operation. So we shall make HVM_PARAM_IDENT_PT conditional upon CONFIG_MGMT_HYPERCALLS, returning -EOPNOTSUPP when MGMT_HYPERCALLS=3Dn. Suggested-by: Jan Beulich Signed-off-by: Penny Zheng --- v2 -> v3: - new commit --- xen/arch/x86/hvm/hvm.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c index e77b0c03ed..e7d630af95 100644 --- a/xen/arch/x86/hvm/hvm.c +++ b/xen/arch/x86/hvm/hvm.c @@ -4281,7 +4281,6 @@ static int hvm_allow_set_param(struct domain *d, static int hvm_set_param(struct domain *d, uint32_t index, uint64_t value) { struct domain *curr_d =3D current->domain; - struct vcpu *v; int rc; =20 rc =3D hvm_allow_set_param(d, index, value); @@ -4307,6 +4306,10 @@ static int hvm_set_param(struct domain *d, uint32_t = index, uint64_t value) rc =3D -EINVAL; break; case HVM_PARAM_IDENT_PT: + { +#ifdef CONFIG_MGMT_HYPERCALLS + struct vcpu *v; + /* * Only actually required for VT-x lacking unrestricted_guest * capabilities. Short circuit the pause if possible. @@ -4334,7 +4337,11 @@ static int hvm_set_param(struct domain *d, uint32_t = index, uint64_t value) domain_unpause(d); =20 domctl_lock_release(); +#else + rc =3D -EOPNOTSUPP; +#endif /* CONFIG_MGMT_HYPERCALLS */ break; + } case HVM_PARAM_DM_DOMAIN: /* The only value this should ever be set to is DOMID_SELF */ if ( value !=3D DOMID_SELF ) --=20 2.34.1