[dpdk-stable] [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets

Burakov, Anatoly anatoly.burakov at intel.com
Mon May 10 17:31:57 CEST 2021


On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> +Cc Anatoly
> 
> 08/05/2021 16:27, Lance Richardson:
>> For 32-bit targets, size_t is normally a 32-bit type and
>> does not have sufficient range to represent 64-bit offsets
>> that can are needed when mapping PCI addresses. Use uint64_t
>> instead.
>>
>> Found when attempting to run 32-bit Linux dpdk-testpmd
>> using VFIO driver:
>>
>>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
>>      0x200000, 0x20000000000): Invalid argument ((nil))
>>
>> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
>> Cc: stable at dpdk.org
>> Signed-off-by: Lance Richardson <lance.richardson at broadcom.com>
>> ---

LGTM, although the Fixes: tag is probably wrong because IIRC previous 
versions did have the same issue.

Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

-- 
Thanks,
Anatoly


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