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Date: Sat, 18 Sep 2010 12:13:16 -0700 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Steve Wise <swise@...ngridcomputing.com>, Roland Dreier <rolandd@...co.com> Subject: [098/129] RDMA/cxgb3: Dont exceed the max HW CQ depth 2.6.35-stable review patch. If anyone has any objections, please let us know. ------------------ From: Steve Wise <swise@...ngridcomputing.com> commit dc4e96ce2dceb649224ee84f83592aac8c54c9b7 upstream. The max depth supported by T3 is 64K entries. This fixes a bug introduced in commit 9918b28d ("RDMA/cxgb3: Increase the max CQ depth") that causes stalls and possibly crashes in large MPI clusters. Signed-off-by: Steve Wise <swise@...ngridcomputing.com> Signed-off-by: Roland Dreier <rolandd@...co.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/infiniband/hw/cxgb3/cxio_hal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/infiniband/hw/cxgb3/cxio_hal.h +++ b/drivers/infiniband/hw/cxgb3/cxio_hal.h @@ -53,7 +53,7 @@ #define T3_MAX_PBL_SIZE 256 #define T3_MAX_RQ_SIZE 1024 #define T3_MAX_QP_DEPTH (T3_MAX_RQ_SIZE-1) -#define T3_MAX_CQ_DEPTH 262144 +#define T3_MAX_CQ_DEPTH 65536 #define T3_MAX_NUM_STAG (1<<15) #define T3_MAX_MR_SIZE 0x100000000ULL #define T3_PAGESIZE_MASK 0xffff000 /* 4KB-128MB */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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