On Mon, Sep 20, 2021 at 01:53:39PM +0100, Srinivas Kandagatla wrote: > > > On 20/09/2021 08:51, Greg KH wrote: > > On Mon, Sep 20, 2021 at 01:04:34PM +0530, Jeya R wrote: > > > For latest chipsets, upto 13 fastrpc sessions can be > > > supported. This includes 12 compute sessions and 1 cpz > > > session. Not updating this might result to out of bounds > > > memory access issues if more than 9 context bank nodes > > > are added to the DT file. > > > > > > Signed-off-by: Jeya R <jeyr@xxxxxxxxxxxxxx> > > > --- > > > drivers/misc/fastrpc.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c > > > index beda610..bd7811e 100644 > > > --- a/drivers/misc/fastrpc.c > > > +++ b/drivers/misc/fastrpc.c > > > @@ -24,7 +24,7 @@ > > > #define SDSP_DOMAIN_ID (2) > > > #define CDSP_DOMAIN_ID (3) > > > #define FASTRPC_DEV_MAX 4 /* adsp, mdsp, slpi, cdsp*/ > > > -#define FASTRPC_MAX_SESSIONS 9 /*8 compute, 1 cpz*/ > > > +#define FASTRPC_MAX_SESSIONS 13 /*12 compute, 1 cpz*/ > > > #define FASTRPC_ALIGN 128 > > > #define FASTRPC_MAX_FDLIST 16 > > > #define FASTRPC_MAX_CRCLIST 64 > > > -- > > > 2.7.4 > > > > > > > What happens if you run this on "older" chipsets? > > This change should not have any implications on the older chips, as the > existing compute context bank device tree entries will not exceed 9. > > > > > And is this an issue now, or can this wait to 5.16-rc1? > > We could wait take in 5.16-rc1, as its an enhancement to allow more compute > context banks. Ok, can I get a reviewed-by: for this?
