On Mon, Feb 7, 2022 at 3:06 PM <[email protected]> wrote: > > From: Alison Schofield <[email protected]> > > Users may want the ability to change the partition layout of a CXL > memory device. > > Add interfaces to libcxl to allocate and send a SET_PARTITION_INFO > mailbox command as defined in the CXL 2.0 specification. > > Signed-off-by: Alison Schofield <[email protected]> > --- > Documentation/cxl/lib/libcxl.txt | 4 ++++ > cxl/lib/libcxl.c | 28 ++++++++++++++++++++++++++++ > cxl/lib/libcxl.sym | 2 ++ > cxl/lib/private.h | 8 ++++++++ > cxl/libcxl.h | 10 ++++++++++ > 5 files changed, 52 insertions(+) > > diff --git a/Documentation/cxl/lib/libcxl.txt > b/Documentation/cxl/lib/libcxl.txt > index a6986ab..301b4d7 100644 > --- a/Documentation/cxl/lib/libcxl.txt > +++ b/Documentation/cxl/lib/libcxl.txt > @@ -132,6 +132,8 @@ int cxl_memdev_read_label(struct cxl_memdev *memdev, void > *buf, size_t length, > int cxl_memdev_write_label(struct cxl_memdev *memdev, void *buf, size_t > length, > size_t offset); > struct cxl_cmd *cxl_cmd_new_get_partition(struct cxl_memdev *memdev); > +struct cxl_cmd *cxl_cmd_new_set_partition(struct cxl_memdev *memdev, > + unsigned long long volatile_size);
Perhaps a note here about the role of cxl_cmd_partition_set_mode(), that the default sets the partition for NEXTBOOT, and that IMMEDIATE support depends on the device being inactive in all regions before the kernel will allow the change? Otherwise, looks good. Reviewed-by: Dan Williams <[email protected]>
