DPDK patches and discussions
 help / color / mirror / Atom feed
From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>, dev@dpdk.org
Cc: stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] memory: do not use base-virtaddr in secondary processes
Date: Tue, 19 Jun 2018 10:21:56 +0100	[thread overview]
Message-ID: <6fb6125a-9f0a-4c37-a51b-c266f353d5b9@intel.com> (raw)
In-Reply-To: <1529351589-173939-1-git-send-email-dariuszx.stojaczyk@intel.com>

On 18-Jun-18 8:53 PM, Dariusz Stojaczyk wrote:
> Since secondary process' address space is highly dictated
> by the primary process' mappings, it doesn't make much
> sense to use base-virtaddr for secondary processes.
> 
> This patch is intended to fix PCI resource mapping
> in secondary processes using the same base-virtaddr
> as their primary processes. PCI uses the end of the hugepage
> memory area to map all resources. [pci_find_max_end_va()]
> It works for primary processes, but can't be mapped 1:1
> by secondary ones, as the same addresses are currently always
> occupied by shadow memseg lists, which were created with
> eal_get_virtual_area(NULL, ...).
> 
> ```
> PRIMARY PROCESS
> 0x6e00e00000    388K rw-s- fbarray_memseg-2048k-1-3
> 0x6e01000000 16777216K r----   [ anon ]
> 0x7201000000     16K rw-s- resource0
> 
> SECONDARY PROCESS
> 0x6e00e00000    388K rw-s- fbarray_memseg-2048k-1-3
> 0x6e01000000 16777216K r----   [ anon ]
> 0x7201000000      4K rw-s- fbarray_memseg-1048576k-0-0_203213
> ```
> 
> Fixes: 524e43c2ad9a ("mem: prepare memseg lists for multiprocess sync")
> Cc: anatoly.burakov@intel.com
> Cc: stable@dpdk.org
> 
> Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
> ---

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

-- 
Thanks,
Anatoly

  parent reply	other threads:[~2018-06-19  9:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-18 19:53 Dariusz Stojaczyk
2018-06-18 17:21 ` Alejandro Lucero
2018-06-18 19:03   ` Stojaczyk, DariuszX
2018-06-18 19:33     ` Alejandro Lucero
2018-06-18 20:12       ` Stojaczyk, DariuszX
2018-06-19  9:24         ` Burakov, Anatoly
2018-06-19 10:23           ` Alejandro Lucero
2018-06-19 10:27             ` Burakov, Anatoly
2018-06-19 11:48               ` Alejandro Lucero
2018-06-19  9:21 ` Burakov, Anatoly [this message]
2018-07-12 22:08   ` Thomas Monjalon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=6fb6125a-9f0a-4c37-a51b-c266f353d5b9@intel.com \
    --to=anatoly.burakov@intel.com \
    --cc=dariuszx.stojaczyk@intel.com \
    --cc=dev@dpdk.org \
    --cc=stable@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).