From: santosh <santosh.shukla@caviumnetworks.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
Thomas Monjalon <thomas@monjalon.net>,
Bruce Richardson <bruce.richardson@intel.com>,
Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
Cc: dev@dpdk.org, Jianfeng Tan <jianfeng.tan@intel.com>
Subject: Re: [dpdk-dev] [PATCH] eal: disable IOVA mode detection by default
Date: Wed, 1 Nov 2017 09:24:44 +0530 [thread overview]
Message-ID: <f4ae30b6-ba2e-a543-924a-a85abe21d1fc@caviumnetworks.com> (raw)
In-Reply-To: <20171101010726.17781-1-ferruh.yigit@intel.com>
On Wednesday 01 November 2017 06:37 AM, Ferruh Yigit wrote:
> Fix kernel crash with KNI because KNI requires physical addresses.
>
> A config option introduced to disable IOVA mode detection and to set it
> to physical address by default. Disabling config option will enable IOVA
> mode detection.
>
> When there is no intension to use KNI, it is safe to enable detection.
>
> Config option disable IOVA mode detection by default to be sure only who
> is aware of result enable it.
>
> Fixes: 72d013644bd6 ("mem: honor IOVA mode in malloc virt2phy")
>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> ---
Disabling _IOVA in config (static-way) defeats the dynamic iova autodetect purpose.
HW facilitates iova=pa/va address space so pmd's should able
to adapt for both the programming mode.. meaning Perhaps phy2virt
style translation might address the KNI crash. For that
KNI could check iova mode by referring to api rte_eal_iova_mode() and then
do the phy2virt translation.
next prev parent reply other threads:[~2017-11-01 3:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-01 1:07 Ferruh Yigit
2017-11-01 2:17 ` Tan, Jianfeng
2017-11-01 6:32 ` Ferruh Yigit
2017-11-01 6:37 ` Tan, Jianfeng
2017-11-01 7:29 ` Ferruh Yigit
2017-11-01 7:55 ` Tan, Jianfeng
2017-11-01 3:54 ` santosh [this message]
2017-11-01 4:02 ` Jerin Jacob
2017-11-01 6:21 ` Ferruh Yigit
2017-11-01 6:54 ` Jerin Jacob
2017-11-01 7:39 ` Tan, Jianfeng
2017-11-01 8:26 ` Jerin Jacob
2017-11-01 8:53 ` Tan, Jianfeng
2017-11-01 18:31 ` Ferruh Yigit
2017-11-01 8:12 ` Ferruh Yigit
2017-11-01 10:31 ` Thomas Monjalon
2017-11-01 11:06 ` santosh
2017-11-01 18:22 ` Ferruh Yigit
2017-11-01 18:11 ` Ferruh Yigit
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