* Re: [dpdk-stable] [dpdk-dev] [PATCH v4] bus/pci: align next mapping address on page boundary
[not found] ` <78A93308629D474AA53B84C5879E84D24B10A29B@DGGEMM533-MBX.china.huawei.com>
@ 2019-11-14 13:14 ` David Marchand
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From: David Marchand @ 2019-11-14 13:14 UTC (permalink / raw)
To: Wangyu (Eric)
Cc: dev, ferruh.yigit, Linuxarm, humin (Q), Liyuan (Larry),
dengxiaofeng, dpdk stable
On Wed, Nov 13, 2019 at 8:17 AM Wangyu (Eric) <seven.wangyu@huawei.com> wrote:
>
> Currently, the next address picked by PCI mapping infrastructure
> may be page-unaligned due to BAR length being smaller than page size.
> This leads to a situation where the requested map address is invalid,
> resulting in mmap() call returning an arbitrary address,
> which will later interfere with device BAR mapping in secondary processes.
>
> Fix it by always aligning the next requested address on page boundary.
>
> Signed-off-by: Xiaofeng Deng <dengxiaofeng@huawei.com>
> Signed-off-by: Wangyu (Eric) <seven.wangyu@huawei.com>
> Acked-by: Wei Hu <xavier.huwei@huawei.com>
> Acked-by: Min Hu <humin29@huawei.com>
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
> Acked-by: Gavin Hu (Arm Technology China) <Gavin.Hu@arm.com>
>
> Fixes: c752998b5e2e ("pci: introduce library and driver")
> Cc: stable@dpdk.org
Cc'd stable.
Applied, thanks.
--
David Marchand
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