diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 3e00299a91..4a6662b31f 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -579,6 +579,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
               /* 365 */
               "machine.pseries.cap-sbbc",
               "machine.pseries.cap-ibs",
+              "tcg",
     );
 
 
@@ -1296,6 +1297,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = {
     { "rng-builtin", QEMU_CAPS_OBJECT_RNG_BUILTIN },
     { "tpm-spapr", QEMU_CAPS_DEVICE_TPM_SPAPR },
     { "vhost-user-fs-device", QEMU_CAPS_DEVICE_VHOST_USER_FS },
+    { "tcg-accel", QEMU_CAPS_TCG },
 };
 
 static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBalloon[] = {
@@ -4869,6 +4871,10 @@ virQEMUCapsInitQMPVersionCaps(virQEMUCapsPtr qemuCaps)
         ARCH_IS_PPC64(qemuCaps->arch)) {
         virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT);
     }
+
+    /* TCG couldn't be disabled nor queried until QEMU 2.10 */
+    if (qemuCaps->version < 2010000)
+        virQEMUCapsSet(qemuCaps, QEMU_CAPS_TCG);
 }
 
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 281aca5ea7..9092da047d 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -560,6 +560,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     /* 365 */
     QEMU_CAPS_MACHINE_PSERIES_CAP_SBBC, /* -machine pseries.cap-sbbc */
     QEMU_CAPS_MACHINE_PSERIES_CAP_IBS, /* -machine pseries.cap-ibs */
+    QEMU_CAPS_TCG, /* QEMU does support TCG */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml
index b57cb2ab59..2ba184cdda 100644
--- a/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml
@@ -85,6 +85,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>1005003</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100245</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml
index 5d0a14a5db..fb160dfd4c 100644
--- a/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml
@@ -90,6 +90,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>1006000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml
index c196fe5e45..732af17233 100644
--- a/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml
@@ -92,6 +92,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>1007000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100244</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml
index 1edcaa4657..22b4817e4e 100644
--- a/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml
@@ -108,6 +108,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2001001</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
index f598b4678a..8c2f8be55d 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
@@ -140,6 +140,7 @@
   <flag name='vhost-vsock'/>
   <flag name='egl-headless'/>
   <flag name='iothread.poll-max-ns'/>
+  <flag name='tcg'/>
   <version>2010000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700287</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
index b95a9d42ad..cec361b60c 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
@@ -140,6 +140,7 @@
   <flag name='egl-headless'/>
   <flag name='iothread.poll-max-ns'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2010000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900287</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
index 04ac872985..7b14f7c209 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
@@ -107,6 +107,7 @@
   <flag name='query-cpu-model-baseline'/>
   <flag name='query-cpu-model-comparison'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2010000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100287</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
index 7ebe97b6ab..4a8bc42778 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
@@ -183,6 +183,7 @@
   <flag name='iothread.poll-max-ns'/>
   <flag name='x86-max-cpu'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2010000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100287</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
index 6d36a6e484..ec8723f045 100644
--- a/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
@@ -114,6 +114,7 @@
   <flag name='query-cpu-model-baseline'/>
   <flag name='query-cpu-model-comparison'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2011000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100288</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml
index b8eb3abd40..03ba191bc2 100644
--- a/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml
@@ -189,6 +189,7 @@
   <flag name='iothread.poll-max-ns'/>
   <flag name='x86-max-cpu'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2011000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100288</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
index 64d8d4951c..025130c378 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
@@ -156,6 +156,7 @@
   <flag name='memory-backend-file.align'/>
   <flag name='arm-max-cpu'/>
   <flag name='drive-nvme'/>
+  <flag name='tcg'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
index 4c1758fbfe..06ee1f4ec4 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
@@ -157,6 +157,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
index 21a168dd3b..8be663c96d 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
@@ -126,6 +126,7 @@
   <flag name='query-cpu-model-comparison'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
index 0c30cc75da..3e86df890b 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
@@ -198,6 +198,7 @@
   <flag name='x86-max-cpu'/>
   <flag name='drive-nvme'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100289</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml
index 9b486effe1..a11659d617 100644
--- a/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml
@@ -134,6 +134,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2004000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml
index 147b179fdb..432e3a5af4 100644
--- a/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml
@@ -140,6 +140,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2005000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100243</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.6.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.6.0.aarch64.xml
index fddca13ee2..389f7af1d6 100644
--- a/tests/qemucapabilitiesdata/caps_2.6.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.6.0.aarch64.xml
@@ -123,6 +123,7 @@
   <flag name='nbd-tls'/>
   <flag name='sdl-gl'/>
   <flag name='hda-output'/>
+  <flag name='tcg'/>
   <version>2006000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700244</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml
index deb5c28790..cdf9450f4a 100644
--- a/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml
@@ -119,6 +119,7 @@
   <flag name='sdl-gl'/>
   <flag name='hda-output'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2006000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900244</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml
index fc508aba8a..4b6b840496 100644
--- a/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml
@@ -152,6 +152,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2006000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100244</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
index 17351ca6bf..f1ba44d78f 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
@@ -91,6 +91,7 @@
   <flag name='sdl-gl'/>
   <flag name='zpci'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2007000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100245</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
index ed199057dc..1fa9a37102 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
@@ -157,6 +157,7 @@
   <flag name='hda-output'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2007000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100245</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
index d204b82030..5d8545146a 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
@@ -96,6 +96,7 @@
   <flag name='query-cpu-model-baseline'/>
   <flag name='query-cpu-model-comparison'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2007093</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100246</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
index 489b67f99a..2847ad711f 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
@@ -160,6 +160,7 @@
   <flag name='vhost-vsock'/>
   <flag name='mch'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2008000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100246</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
index 3bc6ec8dab..539b5e042d 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
@@ -132,6 +132,7 @@
   <flag name='vhost-vsock'/>
   <flag name='iothread.poll-max-ns'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2009000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900247</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
index 9a6d94d37b..4e7919316d 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
@@ -101,6 +101,7 @@
   <flag name='query-cpu-model-baseline'/>
   <flag name='query-cpu-model-comparison'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>2009000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100247</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
index 83fc6cde97..765e469205 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
@@ -177,6 +177,7 @@
   <flag name='iothread.poll-max-ns'/>
   <flag name='x86-max-cpu'/>
   <flag name='i8042'/>
+  <flag name='tcg'/>
   <version>2009000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100247</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
index a8390a12eb..c9c2ac4a0b 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml
@@ -159,6 +159,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>2012050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
index 6814a2f9c6..690c964f76 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.riscv32.xml
@@ -96,6 +96,7 @@
   <flag name='ramfb'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
index b81f5825cc..ad2a5fe163 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.riscv64.xml
@@ -96,6 +96,7 @@
   <flag name='ramfb'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
index 85cda12076..cdd89c8c7d 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.s390x.xml
@@ -129,6 +129,7 @@
   <flag name='ramfb'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
index 517e27d815..2f318640d8 100644
--- a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml
@@ -204,6 +204,7 @@
   <flag name='drive-nvme'/>
   <flag name='i8042'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>3000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100239</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
index d96caaa9ed..18fba375fb 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml
@@ -164,6 +164,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>3000091</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
index d901715ffc..6a05b3e719 100644
--- a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml
@@ -207,6 +207,7 @@
   <flag name='drive-nvme'/>
   <flag name='i8042'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>3000092</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
index 6fd1880ae2..2e8460f829 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.aarch64.xml
@@ -170,6 +170,7 @@
   <flag name='arm-max-cpu'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
index 44c1b9205e..978fad0ba6 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml
@@ -178,6 +178,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
index 6a567239b9..4322ca3593 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv32.xml
@@ -171,6 +171,7 @@
   <flag name='migration-file-drop-cache'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
index d6686b7c68..8df0e1eb79 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.riscv64.xml
@@ -171,6 +171,7 @@
   <flag name='migration-file-drop-cache'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
index 9dc29832f9..60d3a942be 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.s390x.xml
@@ -137,6 +137,7 @@
   <flag name='query-cpu-model-comparison'/>
   <flag name='drive-nvme'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
index ae4004ad3c..4285bec2bf 100644
--- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml
@@ -212,6 +212,7 @@
   <flag name='drive-nvme'/>
   <flag name='i8042'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4000000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100240</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
index d9bdeb2516..1c960faa6c 100644
--- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml
@@ -218,6 +218,7 @@
   <flag name='smp-dies'/>
   <flag name='i8042'/>
   <flag name='storage.werror'/>
+  <flag name='tcg'/>
   <version>4001000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
index e994aa79f5..418b5937a0 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.aarch64.xml
@@ -182,6 +182,7 @@
   <flag name='storage.werror'/>
   <flag name='fsdev.multidevs'/>
   <flag name='virtio.packed'/>
+  <flag name='tcg'/>
   <version>4001050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
index 2eef337cc4..796ed0a2bc 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml
@@ -183,6 +183,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>4001050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml b/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
index 058326ba51..4c0908294a 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.s390x.xml
@@ -147,6 +147,7 @@
   <flag name='storage.werror'/>
   <flag name='fsdev.multidevs'/>
   <flag name='virtio.packed'/>
+  <flag name='tcg'/>
   <version>4002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>39100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
index a1994603cc..0d4d6e71d5 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
@@ -226,6 +226,7 @@
   <flag name='storage.werror'/>
   <flag name='fsdev.multidevs'/>
   <flag name='virtio.packed'/>
+  <flag name='tcg'/>
   <version>4002000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100242</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
index 3876d08ce9..3bacfe13dc 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml
@@ -184,6 +184,7 @@
   <flag name='storage.werror'/>
   <flag name='fsdev.multidevs'/>
   <flag name='virtio.packed'/>
+  <flag name='tcg'/>
   <version>4002050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>61700241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
index d972def4b3..a998bed430 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml
@@ -195,6 +195,7 @@
   <flag name='machine.pseries.cap-cfpc'/>
   <flag name='machine.pseries.cap-sbbc'/>
   <flag name='machine.pseries.cap-ibs'/>
+  <flag name='tcg'/>
   <version>4002050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>42900241</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
index 4058efdfbd..d0d376b0f9 100644
--- a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml
@@ -231,6 +231,7 @@
   <flag name='virtio.packed'/>
   <flag name='pcie-root-port.hotplug'/>
   <flag name='aio.io_uring'/>
+  <flag name='tcg'/>
   <version>4002093</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100241</microcodeVersion>
diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c
index cb68ac0488..9f9eb4033c 100644
--- a/tests/testutilsqemu.c
+++ b/tests/testutilsqemu.c
@@ -345,6 +345,7 @@ int qemuTestCapsCacheInsert(virFileCachePtr cache,
                                       0,
                                       false,
                                       false);
+                virQEMUCapsSet(tmpCaps, QEMU_CAPS_TCG);
             }
             for (j = 0; kvm_machines[i][j] != NULL; j++) {
                 virQEMUCapsAddMachine(tmpCaps,