On Mon, Feb 21, 2022 at 9:05 PM Naveen Krishna Chatradhi <nchatrad@xxxxxxx> wrote: > > From: Suma Hegde <suma.hegde@xxxxxxx> > > Recent Fam19h EPYC server line of processors from AMD support system > management functionality via HSMP (Host System Management Port) interface. > > The Host System Management Port (HSMP) is an interface to provide > OS-level software with access to system management functions via a > set of mailbox registers. > > More details on the interface can be found in chapter > "7 Host System Management Port (HSMP)" of the following PPR > https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip > > This patch adds new amd_hsmp module under the drivers/platforms/x86/ > which creates miscdevice with an IOCTL interface to the user space. > /dev/hsmp is for running the hsmp mailbox commands. > > Signed-off-by: Suma Hegde <suma.hegde@xxxxxxx> > Signed-off-by: Naveen Krishna Chatradhi <nchatrad@xxxxxxx> > Reviewed-by: Carlos Bilbao <carlos.bilbao@xxxxxxx> > Acked-by: Song Liu <song@xxxxxxxxxx> > Reviewed-by: Nathan Fontenot <nathan.fontenot@xxxxxxx> What would be the next step for this set? We are hoping to back port it to our kernel to unblock some tests. Ideally, we would like to do the back port after it is applied to pdx86 tree. Thanks, Song
