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acpi: fix tables for no-hpet configuration 

acpi build tried to add offset of hpet table to rsdt even when hpet was
disabled.  If no tables follow hpet, this could lead to a malformed
rsdt.

Fix it up.

To avoid such errors in the future, rearrange code slightly to make it
clear that acpi_add_table stores the offset of the following table - not
of the previous one.

Reported-by: TeLeMan <geleman@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: qemu-stable@nongnu.org
This commit is contained in:
Michael S. Tsirkin 2014-04-28 08:15:32 +03:00
parent 097a97a665
commit 9ac1c4c07e
1 changed files with 4 additions and 3 deletions
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7
hw/i386/acpi-build.c
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@ -1416,15 +1416,16 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
/* ACPI tables pointed to by RSDT */
acpi_add_table(table_offsets, tables->table_data);
build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt);
acpi_add_table(table_offsets, tables->table_data);
acpi_add_table(table_offsets, tables->table_data);
build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci,
guest_info);
acpi_add_table(table_offsets, tables->table_data);
build_madt(tables->table_data, tables->linker, &cpu, guest_info);
acpi_add_table(table_offsets, tables->table_data);
build_madt(tables->table_data, tables->linker, &cpu, guest_info);
if (misc.has_hpet) {
acpi_add_table(table_offsets, tables->table_data);
build_hpet(tables->table_data, tables->linker);
}
if (guest_info->numa_nodes) {