diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2016-10-29 00:11:49 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-11-01 19:21:08 +0200 |
| commit | d51d1d7edeb869e0010d6b3833bd53ad561ff805 (patch) | |
| tree | 6a9e01e30cea559a72078b9c6821be3351b7f96a /hw/acpi/nvdimm.c | |
| parent | 6034011c7e00e9408e18d42a7fb807a0f12157fc (diff) | |
acpi nvdimm: fix wrong buffer size returned by DSM method
Currently, 'RLEN' is the totally buffer size written by QEMU and it is
ACPI internally used only. The buffer size returned to guest should
not include 'RLEN' itself
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/acpi/nvdimm.c')
| -rw-r--r-- | hw/acpi/nvdimm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index e486128aa1..24a2b3b78a 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -862,7 +862,8 @@ static void nvdimm_build_common_dsm(Aml *dev) aml_append(method, aml_store(dsm_mem, aml_name("NTFI"))); result_size = aml_local(1); - aml_append(method, aml_store(aml_name("RLEN"), result_size)); + /* RLEN is not included in the payload returned to guest. */ + aml_append(method, aml_subtract(aml_name("RLEN"), aml_int(4), result_size)); aml_append(method, aml_store(aml_shiftleft(result_size, aml_int(3)), result_size)); aml_append(method, aml_create_field(aml_name("ODAT"), aml_int(0), |