#include "cpu.h"
#include "cpu-internal.h"
#include "host-cpu.h"
+#include "hw/i386/apic_internal.h"
+#include "hw/i386/apic-msidef.h"
#include "hw/i386/e820_memory_layout.h"
#include "hw/i386/tdvf.h"
#include "hw/i386/x86.h"
#include "hw/i386/tdvf-hob.h"
+#include "hw/pci/msi.h"
#include "kvm_i386.h"
#include "tdx.h"
#include "tdx-quote-generator.h"
return tdvf_parse_metadata(&tdx_guest->tdvf, flash_ptr, size);
}
+static void tdx_inject_interrupt(uint32_t apicid, uint32_t vector)
+{
+ int ret;
+
+ if (vector < 32 || vector > 255) {
+ return;
+ }
+
+ MSIMessage msg = {
+ .address = ((apicid & 0xff) << MSI_ADDR_DEST_ID_SHIFT) |
+ (((uint64_t)apicid & 0xffffff00) << 32),
+ .data = vector | (APIC_DM_FIXED << MSI_DATA_DELIVERY_MODE_SHIFT),
+ };
+
+ ret = kvm_irqchip_send_msi(kvm_state, msg);
+ if (ret < 0) {
+ /* In this case, no better way to tell it to guest. Log it. */
+ error_report("TDX: injection interrupt %d failed, interrupt lost (%s).",
+ vector, strerror(-ret));
+ }
+}
+
static void tdx_get_quote_completion(TdxGenerateQuoteTask *task)
{
TdxGuest *tdx = task->opaque;
error_report("TDX: get-quote: failed to update GetQuote header.");
}
+ tdx_inject_interrupt(tdx_guest->event_notify_apicid,
+ tdx_guest->event_notify_vector);
+
g_free(task->send_data);
g_free(task->receive_buf);
g_free(task);
g_free(task);
}
-#define SUPPORTED_TDVMCALLINFO_1_R11 (0)
+#define SUPPORTED_TDVMCALLINFO_1_R11 (TDG_VP_VMCALL_SUBFUNC_SET_EVENT_NOTIFY_INTERRUPT)
#define SUPPORTED_TDVMCALLINFO_1_R12 (0)
void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run)
run->tdx.get_tdvmcall_info.ret = TDG_VP_VMCALL_SUCCESS;
}
+void tdx_handle_setup_event_notify_interrupt(X86CPU *cpu, struct kvm_run *run)
+{
+ uint64_t vector = run->tdx.setup_event_notify.vector;
+
+ if (vector >= 32 && vector < 256) {
+ qemu_mutex_lock(&tdx_guest->lock);
+ tdx_guest->event_notify_vector = vector;
+ tdx_guest->event_notify_apicid = cpu->apic_id;
+ qemu_mutex_unlock(&tdx_guest->lock);
+ run->tdx.setup_event_notify.ret = TDG_VP_VMCALL_SUCCESS;
+ } else {
+ run->tdx.setup_event_notify.ret = TDG_VP_VMCALL_INVALID_OPERAND;
+ }
+}
+
static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code,
char *message, uint64_t gpa)
{
NULL, NULL);
qemu_mutex_init(&tdx->lock);
+
+ tdx->event_notify_vector = -1;
+ tdx->event_notify_apicid = -1;
}
static void tdx_guest_finalize(Object *obj)
#define TDVMCALL_GET_TD_VM_CALL_INFO 0x10000
#define TDVMCALL_GET_QUOTE 0x10002
+#define TDVMCALL_SETUP_EVENT_NOTIFY_INTERRUPT 0x10004
#define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL
#define TDG_VP_VMCALL_RETRY 0x0000000000000001ULL
#define TDG_VP_VMCALL_GPA_INUSE 0x8000000000000001ULL
#define TDG_VP_VMCALL_ALIGN_ERROR 0x8000000000000002ULL
+#define TDG_VP_VMCALL_SUBFUNC_SET_EVENT_NOTIFY_INTERRUPT BIT_ULL(1)
+
enum TdxRamType {
TDX_RAM_UNACCEPTED,
TDX_RAM_ADDED,
/* GetQuote */
SocketAddress *qg_sock_addr;
int num;
+
+ uint32_t event_notify_vector;
+ uint32_t event_notify_apicid;
} TdxGuest;
#ifdef CONFIG_TDX
int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run);
void tdx_handle_get_quote(X86CPU *cpu, struct kvm_run *run);
void tdx_handle_get_tdvmcall_info(X86CPU *cpu, struct kvm_run *run);
+void tdx_handle_setup_event_notify_interrupt(X86CPU *cpu, struct kvm_run *run);
#endif /* QEMU_I386_TDX_H */