From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: Nate Watterson <nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] iommu/arm-smmu-v3: limit use of 2-level stream tables
Date: Thu, 12 Jan 2017 17:20:19 +0000 [thread overview]
Message-ID: <20170112172019.GI13843@arm.com> (raw)
In-Reply-To: <1484077633-18376-1-git-send-email-nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
On Tue, Jan 10, 2017 at 02:47:13PM -0500, Nate Watterson wrote:
> In the current arm-smmu-v3 driver, all smmus that support 2-level
> stream tables are being forced to use them. This is suboptimal for
> smmus that support fewer stream id bits than would fill in a single
> second level table. This patch limits the use of 2-level tables to
> smmus that both support the feature and whose first level table can
> possibly contain more than a single entry.
>
> Signed-off-by: Nate Watterson <nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
> ---
> drivers/iommu/arm-smmu-v3.c | 21 ++++++++++-----------
> 1 file changed, 10 insertions(+), 11 deletions(-)
Thanks Nate, I'll queue this for 4.11. Sorry for messing you about before.
Will
WARNING: multiple messages have this Message-ID (diff)
From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] iommu/arm-smmu-v3: limit use of 2-level stream tables
Date: Thu, 12 Jan 2017 17:20:19 +0000 [thread overview]
Message-ID: <20170112172019.GI13843@arm.com> (raw)
In-Reply-To: <1484077633-18376-1-git-send-email-nwatters@codeaurora.org>
On Tue, Jan 10, 2017 at 02:47:13PM -0500, Nate Watterson wrote:
> In the current arm-smmu-v3 driver, all smmus that support 2-level
> stream tables are being forced to use them. This is suboptimal for
> smmus that support fewer stream id bits than would fill in a single
> second level table. This patch limits the use of 2-level tables to
> smmus that both support the feature and whose first level table can
> possibly contain more than a single entry.
>
> Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
> ---
> drivers/iommu/arm-smmu-v3.c | 21 ++++++++++-----------
> 1 file changed, 10 insertions(+), 11 deletions(-)
Thanks Nate, I'll queue this for 4.11. Sorry for messing you about before.
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Nate Watterson <nwatters@codeaurora.org>
Cc: Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
linux-arm-kernel@lists.infradead.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iommu/arm-smmu-v3: limit use of 2-level stream tables
Date: Thu, 12 Jan 2017 17:20:19 +0000 [thread overview]
Message-ID: <20170112172019.GI13843@arm.com> (raw)
In-Reply-To: <1484077633-18376-1-git-send-email-nwatters@codeaurora.org>
On Tue, Jan 10, 2017 at 02:47:13PM -0500, Nate Watterson wrote:
> In the current arm-smmu-v3 driver, all smmus that support 2-level
> stream tables are being forced to use them. This is suboptimal for
> smmus that support fewer stream id bits than would fill in a single
> second level table. This patch limits the use of 2-level tables to
> smmus that both support the feature and whose first level table can
> possibly contain more than a single entry.
>
> Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
> ---
> drivers/iommu/arm-smmu-v3.c | 21 ++++++++++-----------
> 1 file changed, 10 insertions(+), 11 deletions(-)
Thanks Nate, I'll queue this for 4.11. Sorry for messing you about before.
Will
next prev parent reply other threads:[~2017-01-12 17:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-19 20:26 [PATCH] iommu/arm-smmu-v3: avoid over allocating for l2 stream tables Nate Watterson
2016-12-19 20:26 ` Nate Watterson
2016-12-19 20:26 ` Nate Watterson
[not found] ` <1482179200-4264-1-git-send-email-nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2016-12-20 10:22 ` Will Deacon
2016-12-20 10:22 ` Will Deacon
2016-12-20 10:22 ` Will Deacon
[not found] ` <20161220102209.GC10132-5wv7dgnIgG8@public.gmane.org>
2017-01-10 19:47 ` [PATCH] iommu/arm-smmu-v3: limit use of 2-level " Nate Watterson
2017-01-10 19:47 ` Nate Watterson
2017-01-10 19:47 ` Nate Watterson
[not found] ` <1484077633-18376-1-git-send-email-nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-01-12 17:20 ` Will Deacon [this message]
2017-01-12 17:20 ` Will Deacon
2017-01-12 17:20 ` Will Deacon
-- strict thread matches above, loose matches on Subject: below --
2016-07-11 18:00 Nate Watterson
2016-07-11 18:00 ` Nate Watterson
[not found] ` <1468260059-10759-1-git-send-email-nwatters-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2016-07-12 9:36 ` Robin Murphy
2016-07-12 9:36 ` Robin Murphy
2016-07-12 9:36 ` Robin Murphy
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