diff options
Diffstat (limited to 'target/i386/kvm/tdx.c')
| -rw-r--r-- | target/i386/kvm/tdx.c | 69 |
1 files changed, 64 insertions, 5 deletions
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index e809e4b2df..7d69d6d7b0 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -28,10 +28,13 @@ #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" @@ -1123,6 +1126,28 @@ int tdx_parse_tdvf(void *flash_ptr, int size) 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; @@ -1154,6 +1179,9 @@ static void tdx_get_quote_completion(TdxGenerateQuoteTask *task) 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); @@ -1256,20 +1284,45 @@ out_free: g_free(task); } +#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) { if (run->tdx.get_tdvmcall_info.leaf != 1) { - return; + return; } - run->tdx.get_tdvmcall_info.r11 = TDG_VP_VMCALL_SUBFUNC_GET_QUOTE; - run->tdx.get_tdvmcall_info.r12 = 0; + run->tdx.get_tdvmcall_info.r11 = (tdx_caps->user_tdvmcallinfo_1_r11 & + SUPPORTED_TDVMCALLINFO_1_R11) | + tdx_caps->kernel_tdvmcallinfo_1_r11; + run->tdx.get_tdvmcall_info.r12 = (tdx_caps->user_tdvmcallinfo_1_r12 & + SUPPORTED_TDVMCALLINFO_1_R12) | + tdx_caps->kernel_tdvmcallinfo_1_r12; run->tdx.get_tdvmcall_info.r13 = 0; run->tdx.get_tdvmcall_info.r14 = 0; + + 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) + char *message, bool has_gpa, + uint64_t gpa) { GuestPanicInformation *panic_info; @@ -1278,6 +1331,7 @@ static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code, panic_info->u.tdx.error_code = (uint32_t) error_code; panic_info->u.tdx.message = message; panic_info->u.tdx.gpa = gpa; + panic_info->u.tdx.has_gpa = has_gpa; qemu_system_guest_panicked(panic_info); } @@ -1297,6 +1351,7 @@ int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run) char *message = NULL; uint64_t *tmp; uint64_t gpa = -1ull; + bool has_gpa = false; if (error_code & 0xffff) { error_report("TDX: REPORT_FATAL_ERROR: invalid error code: 0x%"PRIx64, @@ -1329,9 +1384,10 @@ int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_run *run) if (error_code & TDX_REPORT_FATAL_ERROR_GPA_VALID) { gpa = run->system_event.data[R_R13]; + has_gpa = true; } - tdx_panicked_on_fatal_error(cpu, error_code, message, gpa); + tdx_panicked_on_fatal_error(cpu, error_code, message, has_gpa, gpa); return -1; } @@ -1468,6 +1524,9 @@ static void tdx_guest_init(Object *obj) NULL, NULL); qemu_mutex_init(&tdx->lock); + + tdx->event_notify_vector = -1; + tdx->event_notify_apicid = -1; } static void tdx_guest_finalize(Object *obj) |