[Xen-devel] [PATCH] hvmloader: always include HPET table

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

# HG changeset patch
# User Paolo Bonzini <pbonzini@xxxxxxxxxx>
# Date 1305874860 -7200
# Node ID fcf10fdad1e3c23bcbf0fbf119755970f9e38064
# Parent  8605c877b972c82a385915e38c0171952621ac3c
hvmloader: always include HPET table

Windows SVVP tests require an HPET table even if the HPET is disabled.
This makes sense since the HPET _is_ in the DSDT and, while the OS does
not know that, in principle it's status may change.

(For what it's worth SeaBIOS, in addition to doing this, totally ignores
QEMU's -no-hpet flag and always reports 0x0f for the HPET's _STA method).

Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>

diff --git a/tools/firmware/hvmloader/acpi/build.c 
b/tools/firmware/hvmloader/acpi/build.c
--- a/tools/firmware/hvmloader/acpi/build.c
+++ b/tools/firmware/hvmloader/acpi/build.c
@@ -190,12 +190,9 @@ static int construct_secondary_tables(ui
     }
 
     /* HPET. */
-    if ( hpet_exists(ACPI_HPET_ADDRESS) )
-    {
-        hpet = (struct acpi_20_hpet *)&buf[offset];
-        offset += construct_hpet(hpet);
-        table_ptrs[nr_tables++] = (unsigned long)hpet;
-    }
+    hpet = (struct acpi_20_hpet *)&buf[offset];
+    offset += construct_hpet(hpet);
+    table_ptrs[nr_tables++] = (unsigned long)hpet;
 
     if ( battery_port_exists() ) 
     {



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