From 8d316b8468ec2e87ffc2e75c422698a2acdbcd16 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 18 Jul 2025 18:03:46 +0200 Subject: [PATCH 054/115] i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu RH-Author: Paolo Bonzini RH-MergeRequest: 391: TDX support, including attestation and device assignment RH-Jira: RHEL-15710 RHEL-20798 RHEL-49728 RH-Acked-by: Yash Mankad RH-Acked-by: Peter Xu RH-Acked-by: David Hildenbrand RH-Commit: [54/115] 01b560fa024020f7be4e649cabd47f9f6bca920a (bonzini/rhel-qemu-kvm) TDX vcpu needs to be initialized by SEAMCALL(TDH.VP.INIT) and KVM provides vcpu level IOCTL KVM_TDX_INIT_VCPU for it. KVM_TDX_INIT_VCPU needs the address of the HOB as input. Invoke it for each vcpu after HOB list is created. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/20250508150002.689633-26-xiaoyao.li@intel.com Signed-off-by: Paolo Bonzini (cherry picked from commit 41f7fd22073561a23229c0479d9d708dee9d3a1e) Signed-off-by: Paolo Bonzini --- target/i386/kvm/tdx.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 8f0826ac11..7980daf8c4 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -259,6 +259,18 @@ static void tdx_init_ram_entries(void) tdx_guest->nr_ram_entries = j; } +static void tdx_post_init_vcpus(void) +{ + TdxFirmwareEntry *hob; + CPUState *cpu; + + hob = tdx_get_hob_entry(tdx_guest); + CPU_FOREACH(cpu) { + tdx_vcpu_ioctl(cpu, KVM_TDX_INIT_VCPU, 0, (void *)hob->address, + &error_fatal); + } +} + static void tdx_finalize_vm(Notifier *notifier, void *unused) { TdxFirmware *tdvf = &tdx_guest->tdvf; @@ -302,6 +314,8 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused) tdvf_hob_create(tdx_guest, tdx_get_hob_entry(tdx_guest)); + tdx_post_init_vcpus(); + for_each_tdx_fw_entry(tdvf, entry) { struct kvm_tdx_init_mem_region region; uint32_t flags; -- 2.50.1