diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index f50f022dc2..784bbffead 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -140,6 +140,7 @@ static void acpi_dsdt_add_cpus(Aml *scope, RISCVVirtState *s)
  * 5.2.36 RISC-V Hart Capabilities Table (RHCT)
  * REF: https://github.com/riscv-non-isa/riscv-acpi/issues/16
  *      https://drive.google.com/file/d/1nP3nFiH4jkPMp6COOxP6123DCZKR-tia/view
+ *      https://drive.google.com/file/d/1sKbOa8m1UZw1JkquZYe3F1zQBN1xXsaf/view
  */
 static void build_rhct(GArray *table_data,
                        BIOSLinker *linker,
@@ -149,8 +150,8 @@ static void build_rhct(GArray *table_data,
     MachineState *ms = MACHINE(s);
     const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(ms);
     size_t len, aligned_len;
-    uint32_t isa_offset, num_rhct_nodes;
-    RISCVCPU *cpu;
+    uint32_t isa_offset, num_rhct_nodes, cmo_offset = 0;
+    RISCVCPU *cpu = &s->soc[0].harts[0];
     char *isa;
 
     AcpiTable table = { .sig = "RHCT", .rev = 1, .oem_id = s->oem_id,
@@ -166,6 +167,9 @@ static void build_rhct(GArray *table_data,
 
     /* ISA + N hart info */
     num_rhct_nodes = 1 + ms->smp.cpus;
+    if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) {
+        num_rhct_nodes++;
+    }
 
     /* Number of RHCT nodes*/
     build_append_int_noprefix(table_data, num_rhct_nodes, 4);
@@ -177,7 +181,6 @@ static void build_rhct(GArray *table_data,
     isa_offset = table_data->len - table.table_offset;
     build_append_int_noprefix(table_data, 0, 2);   /* Type 0 */
 
-    cpu = &s->soc[0].harts[0];
     isa = riscv_isa_string(cpu);
     len = 8 + strlen(isa) + 1;
     aligned_len = (len % 2) ? (len + 1) : len;
@@ -193,14 +196,59 @@ static void build_rhct(GArray *table_data,
         build_append_int_noprefix(table_data, 0x0, 1);   /* Optional Padding */
     }
 
+    /* CMO node */
+    if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) {
+        cmo_offset = table_data->len - table.table_offset;
+        build_append_int_noprefix(table_data, 1, 2);    /* Type */
+        build_append_int_noprefix(table_data, 10, 2);   /* Length */
+        build_append_int_noprefix(table_data, 0x1, 2);  /* Revision */
+        build_append_int_noprefix(table_data, 0, 1);    /* Reserved */
+
+        /* CBOM block size */
+        if (cpu->cfg.cbom_blocksize) {
+            build_append_int_noprefix(table_data,
+                                      __builtin_ctz(cpu->cfg.cbom_blocksize),
+                                      1);
+        } else {
+            build_append_int_noprefix(table_data, 0, 1);
+        }
+
+        /* CBOP block size */
+        build_append_int_noprefix(table_data, 0, 1);
+
+        /* CBOZ block size */
+        if (cpu->cfg.cboz_blocksize) {
+            build_append_int_noprefix(table_data,
+                                      __builtin_ctz(cpu->cfg.cboz_blocksize),
+                                      1);
+        } else {
+            build_append_int_noprefix(table_data, 0, 1);
+        }
+    }
+
     /* Hart Info Node */
     for (int i = 0; i < arch_ids->len; i++) {
+        len = 16;
+        int num_offsets = 1;
         build_append_int_noprefix(table_data, 0xFFFF, 2);  /* Type */
-        build_append_int_noprefix(table_data, 16, 2);      /* Length */
-        build_append_int_noprefix(table_data, 0x1, 2);     /* Revision */
-        build_append_int_noprefix(table_data, 1, 2);    /* Number of offsets */
-        build_append_int_noprefix(table_data, i, 4);    /* ACPI Processor UID */
-        build_append_int_noprefix(table_data, isa_offset, 4); /* Offsets[0] */
+
+        /* Length */
+        if (cmo_offset) {
+            len += 4;
+            num_offsets++;
+        }
+
+        build_append_int_noprefix(table_data, len, 2);
+        build_append_int_noprefix(table_data, 0x1, 2); /* Revision */
+        /* Number of offsets */
+        build_append_int_noprefix(table_data, num_offsets, 2);
+        build_append_int_noprefix(table_data, i, 4);   /* ACPI Processor UID */
+
+        /* Offsets */
+        build_append_int_noprefix(table_data, isa_offset, 4);
+        if (cmo_offset) {
+            build_append_int_noprefix(table_data, cmo_offset, 4);
+        }
     }
 
     acpi_table_end(linker, &table);