motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2026-02-16 01:19:32 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

i386/tdx: handle TDG.VP.VMCALL<GetTdVmCallInfo>

Browse source 
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Binbin Wu 2025-04-30 08:53:14 +08:00 • committed by Paolo Bonzini
parent 688b0756ad
commit 427b8cf47a
4 changed files with 37 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

12
target/i386/kvm/kvm.c
View file

@ -6170,6 +6170,18 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
break;
}
break;
case KVM_EXIT_TDX:
/*
* run->tdx is already set up for the case where userspace
* does not handle the TDVMCALL.
*/
switch (run->tdx.nr) {
case TDVMCALL_GET_TD_VM_CALL_INFO:
tdx_handle_get_tdvmcall_info(cpu, run);
break;
}
ret = 0;
break;
default:
fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
ret = -1;

4
target/i386/kvm/tdx-stub.c
View file

@ -18,3 +18,7 @@ int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run)
{
return -EINVAL;
}
void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run)
{
}

12
target/i386/kvm/tdx.c
View file

@ -1120,6 +1120,18 @@ int tdx_parse_tdvf(void *flash_ptr, int size)
return tdvf_parse_metadata(&tdx_guest->tdvf, flash_ptr, size);
}
void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run)
{
if (run->tdx.get_tdvmcall_info.leaf != 1) {
return;
}
run->tdx.get_tdvmcall_info.r11 = 0;
run->tdx.get_tdvmcall_info.r12 = 0;
run->tdx.get_tdvmcall_info.r13 = 0;
run->tdx.get_tdvmcall_info.r14 = 0;
}
static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code,
char *message, uint64_t gpa)
{

9
target/i386/kvm/tdx.h
View file

@ -21,6 +21,14 @@ typedef struct TdxGuestClass {
/* TDX requires bus frequency 25MHz */
#define TDX_APIC_BUS_CYCLES_NS 40
#define TDVMCALL_GET_TD_VM_CALL_INFO 0x10000
#define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL
#define TDG_VP_VMCALL_RETRY 0x0000000000000001ULL
#define TDG_VP_VMCALL_INVALID_OPERAND 0x8000000000000000ULL
#define TDG_VP_VMCALL_GPA_INUSE 0x8000000000000001ULL
#define TDG_VP_VMCALL_ALIGN_ERROR 0x8000000000000002ULL
enum TdxRamType {
TDX_RAM_UNACCEPTED,
TDX_RAM_ADDED,
@ -61,5 +69,6 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp);
void tdx_set_tdvf_region(MemoryRegion *tdvf_mr);
int tdx_parse_tdvf(void *flash_ptr, int size);
int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run);
void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run);
#endif /* QEMU_I386_TDX_H */