From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>, dev@dpdk.org
Cc: stable@dpdk.org
Subject: Re: [dpdk-stable] [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
next prev 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 ` [dpdk-stable] [dpdk-dev] " 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
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