From: Bruce Richardson <bruce.richardson@intel.com>
To: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2 2/2] mem: unmap unneeded space
Date: Mon, 30 Apr 2018 13:50:36 +0100 [thread overview]
Message-ID: <20180430125035.GB100464@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <73e35ca9ce462ab097c6ca8e7cbfdd5b8bc06c1d.1525086045.git.anatoly.burakov@intel.com>
On Mon, Apr 30, 2018 at 12:21:43PM +0100, Anatoly Burakov wrote:
> When we ask to reserve virtual areas, we usually include
> alignment in the mapping size, and that memory ends up
> being wasted. Wasting a gigabyte of VA space while trying to
> reserve one gigabyte is pretty expensive on 32-bit, so after
> we're done mapping, unmap unneeded space.
>
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>
> Notes:
> v2:
> - Split fix for size_t overflow into separate patch
> - Improve readability of unmapping code
> - Added comment explaining why unmapping is done
>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
next prev parent reply other threads:[~2018-04-30 12:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-19 16:35 [dpdk-dev] [PATCH] " Anatoly Burakov
2018-04-27 16:32 ` Bruce Richardson
2018-04-27 16:38 ` Bruce Richardson
2018-04-30 11:21 ` [dpdk-dev] [PATCH v2 1/2] mem: check if allocation size is too big Anatoly Burakov
2018-04-30 12:49 ` Bruce Richardson
2018-04-30 11:21 ` [dpdk-dev] [PATCH v2 2/2] mem: unmap unneeded space Anatoly Burakov
2018-04-30 12:50 ` Bruce Richardson [this message]
2018-05-02 21:00 ` Thomas Monjalon
2018-05-08 20:20 ` Thomas Monjalon
2018-05-13 23:33 ` Thomas Monjalon
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