[PATCH 3/5] BIOS changes for qemu-kvm hpet support (v9)

[Beth Kon <eak@xxxxxxxxxx>]

    Advertise HPET in ACPI HPET table

    Signed-off-by: Beth Kon <eak@xxxxxxxxxx>
    Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>

---
 kvm/bios/acpi-dsdt.dsl |    2 --
 kvm/bios/rombios32.c   |   11 +++--------
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/kvm/bios/acpi-dsdt.dsl b/kvm/bios/acpi-dsdt.dsl
index 3560baa..26fc7ad 100755
--- a/kvm/bios/acpi-dsdt.dsl
+++ b/kvm/bios/acpi-dsdt.dsl
@@ -194,7 +194,6 @@ DefinitionBlock (
             })
         }
 #ifdef BX_QEMU
-#ifdef HPET_WORKS_IN_KVM
         Device(HPET) {
             Name(_HID,  EISAID("PNP0103"))
             Name(_UID, 0)
@@ -214,7 +213,6 @@ DefinitionBlock (
             })
         }
 #endif
-#endif
     }
 
     Scope(\_SB.PCI0) {
diff --git a/kvm/bios/rombios32.c b/kvm/bios/rombios32.c
index f9e0452..28f2b21 100755
--- a/kvm/bios/rombios32.c
+++ b/kvm/bios/rombios32.c
@@ -1526,8 +1526,8 @@ struct acpi_20_generic_address {
 } __attribute__((__packed__));
 
 /*
- *  * HPET Description Table
- *   */
+ *  HPET Description Table
+ */
 struct acpi_20_hpet {
     ACPI_TABLE_HEADER_DEF                           /* ACPI common table header */
     uint32_t           timer_block_id;
@@ -1716,13 +1716,11 @@ void acpi_bios_init(void)
     addr += madt_size;
 
 #ifdef BX_QEMU
-#ifdef HPET_WORKS_IN_KVM
     addr = (addr + 7) & ~7;
     hpet_addr = addr;
     hpet = (void *)(addr);
     addr += sizeof(*hpet);
 #endif
-#endif
 
     /* RSDP */
     memset(rsdp, 0, sizeof(*rsdp));
@@ -1900,7 +1898,6 @@ void acpi_bios_init(void)
     }
 
     /* HPET */
-#ifdef HPET_WORKS_IN_KVM
     memset(hpet, 0, sizeof(*hpet));
     /* Note timer_block_id value must be kept in sync with value advertised by
      * emulated hpet
@@ -1909,7 +1906,6 @@ void acpi_bios_init(void)
     hpet->addr.address = cpu_to_le32(ACPI_HPET_ADDRESS);
     acpi_build_table_header((struct  acpi_table_header *)hpet,
                              "HPET", sizeof(*hpet), 1);
-#endif
 
 #endif
 
@@ -1919,8 +1915,7 @@ void acpi_bios_init(void)
     rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(ssdt_addr);
     rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(madt_addr);
 #ifdef BX_QEMU
-    /* No HPET (yet) */
-//  rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(hpet_addr);
+    rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(hpet_addr);
     if (nb_numa_nodes > 0)
         rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(srat_addr);
     acpi_additional_tables(); /* resets cfg to required entry */
--
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