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From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Alejandro Lucero <alejandro.lucero@netronome.com>, dev@dpdk.org
Subject: Re: [PATCH v2 2/6] mem: use address hint for mapping hugepages
Date: Fri, 5 Oct 2018 13:16:07 +0100	[thread overview]
Message-ID: <729cabae-ab75-8080-7da6-bf603099a938@intel.com> (raw)
In-Reply-To: <1538741212-7922-3-git-send-email-alejandro.lucero@netronome.com>

On 05-Oct-18 1:06 PM, Alejandro Lucero wrote:
> Linux kernel uses a really high address as starting address for
> serving mmaps calls. If there exist addressing limitations and
> IOVA mode is VA, this starting address is likely too high for
> those devices. However, it is possible to use a lower address in
> the process virtual address space as with 64 bits there is a lot
> of available space.
> 
> This patch adds an address hint as starting address for 64 bits
> systems and increments the hint for next invocations. If the mmap
> call does not use the hint address, repeat the mmap call using
> the hint address incremented by page size.
> 
> Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
> ---

Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>

-- 
Thanks,
Anatoly

  reply	other threads:[~2018-10-05 12:16 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-05 12:06 [PATCH v2 0/6] use IOVAs check based on DMA mask Alejandro Lucero
2018-10-05 12:06 ` [PATCH v2 1/6] mem: add function for checking memsegs IOVAs addresses Alejandro Lucero
2018-10-05 12:15   ` Burakov, Anatoly
2018-10-05 12:19     ` Alejandro Lucero
2018-10-05 12:20       ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 2/6] mem: use address hint for mapping hugepages Alejandro Lucero
2018-10-05 12:16   ` Burakov, Anatoly [this message]
2018-10-05 12:06 ` [PATCH v2 3/6] bus/pci: check iommu addressing limitation just once Alejandro Lucero
2018-10-05 12:16   ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 4/6] bus/pci: use IOVAs dmak mask check when setting IOVA mode Alejandro Lucero
2018-10-05 12:18   ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 5/6] net/nfp: check hugepages IOVAs based on DMA mask Alejandro Lucero
2018-10-05 12:06 ` [PATCH v2 6/6] net/nfp: support IOVA VA mode Alejandro Lucero

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