1/0 to true/false
and add a comment explaining.
- Delete unused initialization.
- if dmar_acpi_insert_dev_scope() always returns zero,will not
call dmar_rmrr_add_acpi_dev().
- Use a proper error code.
- Use if(!pdev).
- Use goto unlock instead of mutex_unlock().
FelixCuioc
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the RMRR region.
Signed-off-by: FelixCuioc
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 76
1/0 to true/false
and add a comment explaining.
- Delete unused initialization.
- if dmar_acpi_insert_dev_scope() always returns zero,will not
call dmar_rmrr_add_acpi_dev().
- Use a proper error code.
- Use if(!pdev).
- Use goto unlock instead of mutex_unlock().
FelixCuioc
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the RMRR region.
Signed-off-by: FelixCuioc
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 76
In the probe_acpi_namespace_devices function,when the physical
node of the acpi device is NULL,the unlock function is missing.
Add mutex_unlock(>physical_node_lock).
Reported-by: Dan Carpenter
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/iommu.c | 1 +
1 file changed, 1 insertion(+)
d
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 74
>v2:
- Split the patch set to small series of patches
- Move the processing of physical node of acpi device for NULL
to probe_acpi_namespace_devices().
- Add mutex_unlock(>physical_node_lock) before returning
in probe_acpi_namespace_devices().
FelixCuioc (3):
iommu/vt-d:Ad
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the RMRR region.
Signed-off-by: FelixCuioc
In the probe_acpi_namespace_devices function,when the physical
node of the acpi device is NULL,the unlock function is missing.
Add mutex_unlock(>physical_node_lock).
Reported-by: Dan Carpenter
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/iommu.c | 1 +
1 file changed, 1 insertion(+)
d
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 74
>v2:
- Split the patch set to small series of patches
- Move the processing of physical node of acpi device for NULL
to probe_acpi_namespace_devices().
- Add mutex_unlock(>physical_node_lock) before returning
in probe_acpi_namespace_devices().
FelixCuioc (3):
iommu/vt-d:Ad
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the RMRR region.
Signed-off-by: FelixCuioc
In the probe_acpi_namespace_devices function,when the physical
node of the acpi device is NULL,the unlock function is missing.
Add mutex_unlock(>physical_node_lock).
Reported-by: Dan Carpenter
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/iommu.c | 1 +
1 file changed, 1 insertion(+)
d
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the RMRR region.
Signed-off-by: FelixCuioc
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 74
Some ACPI devices require access to the specified reserved memory
region.BIOS report the specified reserved memory region through
RMRR structures.Add analysis of ACPI device in RMRR and establish
identity mapping for ACPI device.
Reported-by: kernel test robot
Signed-off-by: FelixCuioc
Some ACPI devices require access to the specified reserved memory
region.BIOS report the specified reserved memory region through
RMRR structures.Add analysis of ACPI device in RMRR and establish
identity mapping for ACPI device.
Signed-off-by: FelixCuioc
---
drivers/iommu/intel/dmar.c | 74
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