diff options
Diffstat (limited to 'Documentation/driver-api/cxl/devices')
| -rw-r--r-- | Documentation/driver-api/cxl/devices/device-types.rst | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/driver-api/cxl/devices/device-types.rst b/Documentation/driver-api/cxl/devices/device-types.rst index f5e4330c1cfed..923f5d89bc044 100644 --- a/Documentation/driver-api/cxl/devices/device-types.rst +++ b/Documentation/driver-api/cxl/devices/device-types.rst @@ -63,13 +63,13 @@ A Type-2 CXL Device: * Supports cxl.io, cxl.cache, and cxl.mem protocols * Optionally implements coherent cache and Host-Managed Device Memory -* Is typically an accelerator device w/ high bandwidth memory. +* Is typically an accelerator device with high bandwidth memory. The primary difference between a type-1 and type-2 device is the presence of host-managed device memory, which allows the device to operate on a -local memory bank - while the CPU sill has coherent DMA to the same memory. +local memory bank - while the CPU still has coherent DMA to the same memory. -The allows things like GPUs to expose their memory via DAX devices or file +This allows things like GPUs to expose their memory via DAX devices or file descriptors, allows drivers and programs direct access to device memory rather than use block-transfer semantics. @@ -89,7 +89,7 @@ basic coherent DMA. Switch ------ -A CXL switch is a device capacity of routing any CXL (and by extension, PCIe) +A CXL switch is a device capable of routing any CXL (and by extension, PCIe) protocol between an upstream, downstream, or peer devices. Many devices, such as Multi-Logical Devices, imply the presence of switching in some manner. @@ -103,7 +103,7 @@ A Single-Logical Device (SLD) is a device which presents a single device to one or more heads. A Multi-Logical Device (MLD) is a device which may present multiple devices -to one or more devices. +to one or more upstream devices. A Single-Headed Device exposes only a single physical connection. |