Re: [PATCH 22/23] cxl/mem: Introduce cxl_mem driver
flat view
From: Randy Dunlap <rdunlap@infradead.org>
Date: 2021-11-20 00:40:19
Also in:
linux-cxl
On 11/19/21 4:02 PM, Ben Widawsky wrote:
quoted hunk ↗ jump to hunk
diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig index 3aeb33bba5a3..f5553443ba2a 100644 --- a/drivers/cxl/Kconfig +++ b/drivers/cxl/Kconfig@@ -30,6 +30,21 @@ config CXL_PCI If unsure say 'm'. +config CXL_MEM + tristate "CXL.mem: Memory Devices" + default CXL_BUS + help + The CXL.mem protocol allows a device to act as a provider of + "System RAM" and/or "Persistent Memory" that is fully coherent + as if the memory was attached to the typical CPU memory controller. + This is known as HDM "Host-managed Device Memory". + + Say 'y/m' to enable a driver that will attach to CXL.mem devices for + memory expansion and control of HDM. See Chapter 9.13 in the CXL 2.0 + specification for a detailed description of HDM. + + If unsure say 'm'.
Hi Ben, Both patch 20 and patch 22 add a "new" CXL_MEM config symbol. Is one of them a typo? thanks. -- ~Randy