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From: Crane Chu <cranechu@gmail.com>
To: users@dpdk.org
Subject: [dpdk-users] memzone reserve 2GB memory fail in dynamic memory mode
Date: Sat, 1 Dec 2018 17:03:35 +0800	[thread overview]
Message-ID: <CAPtQi4SsHt+5vUT=zvO6e7FjG42WqZw0htp3oai9OAUJo4dXYQ@mail.gmail.com> (raw)

Hi,

In my DPDK/SPDK application, it needs a large contiguous memory (2GB or
even much larger) given enough memory pre-allocated. It works fine with
DPDK before v18.05.

Now, I want to upgrade DPDK to v18.10, which includes the reworked memory
subsystem. In legary mode, rte_memzone_reserve_aligned can still reserve
the memory successfully, and the application works fine.

However, in new dynamic mode, rte_memzone_reserve_aligned(... 2GB,
..., RTE_MEMZONE_IOVA_CONTIG) fails always. So, in dynamic memory mode of
the reworked memory subsystem, is it possible to allocate the large
contiguous memzone? Is there any special configuration required?

Thanks,
-Crane

                 reply	other threads:[~2018-12-01  9:03 UTC|newest]

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