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[Qemu-devel] [PATCH v2 1/8] acpi nvdimm: fix wrong buffer size returned
From: |
Xiao Guangrong |
Subject: |
[Qemu-devel] [PATCH v2 1/8] acpi nvdimm: fix wrong buffer size returned by DSM method |
Date: |
Fri, 12 Aug 2016 14:54:03 +0800 |
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 <address@hidden>
---
hw/acpi/nvdimm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index e486128..5454c0f 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -863,6 +863,8 @@ static void nvdimm_build_common_dsm(Aml *dev)
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(result_size, 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),
--
1.8.3.1
- [Qemu-devel] [PATCH v2 0/8] nvdimm: hotplug support, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 1/8] acpi nvdimm: fix wrong buffer size returned by DSM method,
Xiao Guangrong <=
- [Qemu-devel] [PATCH v2 6/8] pc: memhp: do not export nvdimm's memory via _CRS, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 5/8] pc-dimm: introduce prepare_unplug() callback, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 3/8] nvdimm acpi: introduce _FIT, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 2/8] nvdimm acpi: prebuild nvdimm devices for available slots, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 7/8] pc: acpi: memhp: nvdimm hotplug support, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 8/8] nvdimm docs: add nvdimm Read FIT function, Xiao Guangrong, 2016/08/12
- [Qemu-devel] [PATCH v2 4/8] nvdimm acpi: implement Read FIT function, Xiao Guangrong, 2016/08/12
- Re: [Qemu-devel] [PATCH v2 0/8] nvdimm: hotplug support, Stefan Hajnoczi, 2016/08/12
- Re: [Qemu-devel] [PATCH v2 0/8] nvdimm: hotplug support, Dan Williams, 2016/08/18