linux-kernel - Re: [PATCH v2] iommu/vt-d: Don't be too aggressive when clearing one context entry

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Message-ID: <20170901093107.dk5tt7jcgvbrbjpm@8bytes.org>
Date:   Fri, 1 Sep 2017 11:31:07 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Filippo Sironi <sironi@...zon.de>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        David Woodhouse <dwmw@...zon.co.uk>,
        David Woodhouse <dwmw2@...radead.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v2] iommu/vt-d: Don't be too aggressive when clearing one
 context entry

On Thu, Aug 31, 2017 at 10:58:11AM +0200, Filippo Sironi wrote:
> Previously, we were invalidating context cache and IOTLB globally when
> clearing one context entry.  This is a tad too aggressive.
> Invalidate the context cache and IOTLB for the interested device only.
> 
> Signed-off-by: Filippo Sironi <sironi@...zon.de>
> Cc: David Woodhouse <dwmw@...zon.co.uk>
> Cc: David Woodhouse <dwmw2@...radead.org>
> Cc: Joerg Roedel <joro@...tes.org>
> Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Cc: iommu@...ts.linux-foundation.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  drivers/iommu/intel-iommu.c | 42 ++++++++++++++++++++++++------------------
>  1 file changed, 24 insertions(+), 18 deletions(-)

Applied, thanks.