Originated-from: Isaku Yamahata <[email protected]>
Signed-off-by: Xiaoyao Li <[email protected]>
---
qapi/run-state.json | 17 +++++++++++++--
softmmu/runstate.c | 49 +++++++++++++++++++++++++++++++++++++++++++
target/i386/kvm/tdx.c | 24 ++++++++++++++++++++-
3 files changed, 87 insertions(+), 3 deletions(-)
diff --git a/qapi/run-state.json b/qapi/run-state.json
index f216ba54ec4c..506bbe31541f 100644
--- a/qapi/run-state.json
+++ b/qapi/run-state.json
@@ -499,7 +499,7 @@
# Since: 2.9
##
{ 'enum': 'GuestPanicInformationType',
- 'data': [ 'hyper-v', 's390' ] }
+ 'data': [ 'hyper-v', 's390', 'tdx' ] }
##
# @GuestPanicInformation:
@@ -514,7 +514,8 @@
'base': {'type': 'GuestPanicInformationType'},
'discriminator': 'type',
'data': {'hyper-v': 'GuestPanicInformationHyperV',
- 's390': 'GuestPanicInformationS390'}}
+ 's390': 'GuestPanicInformationS390',
+ 'tdx' : 'GuestPanicInformationTdx'}}
##
# @GuestPanicInformationHyperV:
@@ -577,6 +578,18 @@
'psw-addr': 'uint64',
'reason': 'S390CrashReason'}}
+##
+# @GuestPanicInformationTdx:
+#
+# TDX GHCI TDG.VP.VMCALL<ReportFatalError> specific guest panic information
+#
+# Since: 8.2
+##
+{'struct': 'GuestPanicInformationTdx',
+ 'data': {'error-code': 'uint64',
+ 'gpa': 'uint64',
+ 'message': 'str'}}
+
##
# @MEMORY_FAILURE:
#
diff --git a/softmmu/runstate.c b/softmmu/runstate.c
index f3bd86281813..cab11484ed7e 100644
--- a/softmmu/runstate.c
+++ b/softmmu/runstate.c
@@ -518,7 +518,56 @@ void qemu_system_guest_panicked(GuestPanicInformation
*info)
S390CrashReason_str(info->u.s390.reason),
info->u.s390.psw_mask,
info->u.s390.psw_addr);
+ } else if (info->type == GUEST_PANIC_INFORMATION_TYPE_TDX) {
+ char *buf = NULL;
+ bool printable = false;
+
+ /*
+ * Although message is defined as a json string, we shouldn't
+ * unconditionally treat it as is because the guest generated it
and
+ * it's not necessarily trustable.
+ */
+ if (info->u.tdx.message) {
+ /* The caller guarantees the NUL-terminated string. */
+ int len = strlen(info->u.tdx.message);
+ int i;
+
+ printable = len > 0;
+ for (i = 0; i < len; i++) {
+ if (!(0x20 <= info->u.tdx.message[i] &&
+ info->u.tdx.message[i] <= 0x7e)) {
+ printable = false;
+ break;
+ }
+ }
+
+ /* 3 = length of "%02x " */
+ buf = g_malloc(len * 3);
+ for (i = 0; i < len; i++) {
+ if (info->u.tdx.message[i] == '\0') {
+ break;
+ } else {
+ sprintf(buf + 3 * i, "%02x ", info->u.tdx.message[i]);
+ }
+ }
+ if (i > 0)
+ /* replace the last ' '(space) to NUL */
+ buf[i * 3 - 1] = '\0';
+ else
+ buf[0] = '\0';
+ }
+
+ qemu_log_mask(LOG_GUEST_ERROR,
+ //" TDX report fatal error:\"%s\" %s",
+ " TDX report fatal error:\"%s\""
+ "error: 0x%016" PRIx64 " gpa page: 0x%016" PRIx64
"\n",
+ printable ? info->u.tdx.message : "",
+ //buf ? buf : "",
+ info->u.tdx.error_code,
+ info->u.tdx.gpa);
+ g_free(buf);
}
+
qapi_free_GuestPanicInformation(info);
}
}
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index f111b46dac92..7efaa13f59e2 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -18,6 +18,7 @@
#include "qom/object_interfaces.h"
#include "standard-headers/asm-x86/kvm_para.h"
#include "sysemu/kvm.h"
+#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
#include "exec/ramblock.h"
@@ -1408,11 +1409,26 @@ static void tdx_handle_get_quote(X86CPU *cpu, struct
kvm_tdx_vmcall *vmcall)
vmcall->status_code = TDG_VP_VMCALL_SUCCESS;
}
+static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code,
+ uint64_t gpa, char *message)
+{
+ GuestPanicInformation *panic_info;
+
+ panic_info = g_new0(GuestPanicInformation, 1);
+ panic_info->type = GUEST_PANIC_INFORMATION_TYPE_TDX;
+ panic_info->u.tdx.error_code = error_code;
+ panic_info->u.tdx.gpa = gpa;
+ panic_info->u.tdx.message = (char *)message;
+
+ qemu_system_guest_panicked(panic_info);
+}
+
static void tdx_handle_report_fatal_error(X86CPU *cpu,
struct kvm_tdx_vmcall *vmcall)
{
uint64_t error_code = vmcall->in_r12;
char *message = NULL;
+ uint64_t gpa = -1ull;
if (error_code & 0xffff) {
error_report("invalid error code of
TDG.VP.VMCALL<REPORT_FATAL_ERROR>\n");
@@ -1441,7 +1457,13 @@ static void tdx_handle_report_fatal_error(X86CPU *cpu,
}
error_report("TD guest reports fatal error. %s\n", message ? : "");
- exit(1);
+
+#define TDX_REPORT_FATAL_ERROR_GPA_VALID BIT_ULL(63)
+ if (error_code & TDX_REPORT_FATAL_ERROR_GPA_VALID) {
+ gpa = vmcall->in_r13;
+ }
+
+ tdx_panicked_on_fatal_error(cpu, error_code, gpa, message);
}
static void tdx_handle_setup_event_notify_interrupt(X86CPU *cpu,
--
2.34.1
