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| author | Michael S. Tsirkin <mst@redhat.com> | 2013-10-03 16:06:24 +0300 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2013-11-19 20:40:23 -0500 |
| commit | 62335436b649aea80242b6961f23c59b8f989f73 (patch) | |
| tree | a223cb9860371f4fe435fe52c22f6d9186b13f80 | |
| parent | ce39bd40318203dd30faa1721951596c188e233c (diff) | |
| download | seabios-62335436b649aea80242b6961f23c59b8f989f73.zip seabios-62335436b649aea80242b6961f23c59b8f989f73.tar.gz seabios-62335436b649aea80242b6961f23c59b8f989f73.tar.bz2 | |
acpi: strip compiler info in built-in DSDT if any
IASL stores it's revision in each table header it generates.
That's a problem since guests see a change each time
they move between hypervisors.
We generally fill our own info for tables,
but we forgot to do this for the built-in DSDT.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | src/fw/acpi.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/fw/acpi.c b/src/fw/acpi.c index 4504a86..042d571 100644 --- a/src/fw/acpi.c +++ b/src/fw/acpi.c @@ -676,13 +676,16 @@ acpi_setup(void) if (CONFIG_ACPI_DSDT && fadt && !fadt->dsdt) { /* default DSDT */ - void *dsdt = malloc_high(sizeof(AmlCode)); + struct acpi_table_header *dsdt = malloc_high(sizeof(AmlCode)); if (!dsdt) { warn_noalloc(); return; } memcpy(dsdt, AmlCode, sizeof(AmlCode)); fill_dsdt(fadt, dsdt); + /* Strip out compiler-generated header if any */ + memset(dsdt, 0, sizeof *dsdt); + build_header(dsdt, DSDT_SIGNATURE, sizeof(AmlCode), 1); } // Build final rsdt table |