From: Tom Murphy <tmurphy@arista.com>
To: Christoph Hellwig <hch@infradead.org>, joerg.roedel@amd.com
Cc: iommu@lists.linux-foundation.org,
Heiko Stuebner <heiko@sntech.de>,
Will Deacon <will.deacon@arm.com>,
David Brown <david.brown@linaro.org>,
linux-samsung-soc@vger.kernel.org,
Dmitry Safonov <dima@arista.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-rockchip@lists.infradead.org, Kukjin Kim <kgene@kernel.org>,
Andy Gross <andy.gross@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>,
linux-arm-msm@vger.kernel.org,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Tom Murphy <murphyt7@tcd.ie>,
Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH 5/9] iommu/amd: Implement .flush_np_cache
Date: Mon, 15 Apr 2019 19:18:21 +0100 [thread overview]
Message-ID: <CAPL0++49xZk=bfkBu4e0cS_NA3gs7_z0tiifZBL+Jp8d_6S1rg@mail.gmail.com> (raw)
In-Reply-To: <20190415063351.GD1377@infradead.org>
This is a cut and paste from the current amd_iommu driver. I really
have no idea if it's a good idea or not. It looks like
joerg.roedel@amd.com might be the person to ask.
@Joerg Roedel should we keep this?
On Mon, Apr 15, 2019 at 7:33 AM Christoph Hellwig <hch@infradead.org> wrote:
>
> > +static void amd_iommu_flush_np_cache(struct iommu_domain *domain,
> > + unsigned long iova, size_t size)
> > +{
> > + struct protection_domain *dom = to_pdomain(domain);
> > +
> > + if (unlikely(amd_iommu_np_cache)) {
>
> Is this case really so unlikely that it needs a static branch prediction
> hint?
WARNING: multiple messages have this Message-ID (diff)
From: Tom Murphy via iommu <iommu@lists.linux-foundation.org>
To: Christoph Hellwig <hch@infradead.org>, joerg.roedel@amd.com
Cc: linux-samsung-soc@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
Dmitry Safonov <dima@arista.com>,
Marc Zyngier <marc.zyngier@arm.com>,
linux-arm-msm@vger.kernel.org, Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
David Brown <david.brown@linaro.org>,
iommu@lists.linux-foundation.org, Kukjin Kim <kgene@kernel.org>,
linux-mediatek@lists.infradead.org, Tom Murphy <murphyt7@tcd.ie>,
Andy Gross <andy.gross@linaro.org>,
linux-rockchip@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>
Subject: Re: [PATCH 5/9] iommu/amd: Implement .flush_np_cache
Date: Mon, 15 Apr 2019 19:18:21 +0100 [thread overview]
Message-ID: <CAPL0++49xZk=bfkBu4e0cS_NA3gs7_z0tiifZBL+Jp8d_6S1rg@mail.gmail.com> (raw)
Message-ID: <20190415181821.SfCxgaHnclR31sUhdXTqbw0fvPtmEh1JcedcwEHLBf8@z> (raw)
In-Reply-To: <20190415063351.GD1377@infradead.org>
This is a cut and paste from the current amd_iommu driver. I really
have no idea if it's a good idea or not. It looks like
joerg.roedel@amd.com might be the person to ask.
@Joerg Roedel should we keep this?
On Mon, Apr 15, 2019 at 7:33 AM Christoph Hellwig <hch@infradead.org> wrote:
>
> > +static void amd_iommu_flush_np_cache(struct iommu_domain *domain,
> > + unsigned long iova, size_t size)
> > +{
> > + struct protection_domain *dom = to_pdomain(domain);
> > +
> > + if (unlikely(amd_iommu_np_cache)) {
>
> Is this case really so unlikely that it needs a static branch prediction
> hint?
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Tom Murphy <tmurphy@arista.com>
To: Christoph Hellwig <hch@infradead.org>, joerg.roedel@amd.com
Cc: linux-samsung-soc@vger.kernel.org,
Heiko Stuebner <heiko@sntech.de>,
Dmitry Safonov <dima@arista.com>,
Marc Zyngier <marc.zyngier@arm.com>,
linux-arm-msm@vger.kernel.org, Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
David Brown <david.brown@linaro.org>,
iommu@lists.linux-foundation.org, Kukjin Kim <kgene@kernel.org>,
linux-mediatek@lists.infradead.org, Tom Murphy <murphyt7@tcd.ie>,
Andy Gross <andy.gross@linaro.org>,
linux-rockchip@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>
Subject: Re: [PATCH 5/9] iommu/amd: Implement .flush_np_cache
Date: Mon, 15 Apr 2019 19:18:21 +0100 [thread overview]
Message-ID: <CAPL0++49xZk=bfkBu4e0cS_NA3gs7_z0tiifZBL+Jp8d_6S1rg@mail.gmail.com> (raw)
In-Reply-To: <20190415063351.GD1377@infradead.org>
This is a cut and paste from the current amd_iommu driver. I really
have no idea if it's a good idea or not. It looks like
joerg.roedel@amd.com might be the person to ask.
@Joerg Roedel should we keep this?
On Mon, Apr 15, 2019 at 7:33 AM Christoph Hellwig <hch@infradead.org> wrote:
>
> > +static void amd_iommu_flush_np_cache(struct iommu_domain *domain,
> > + unsigned long iova, size_t size)
> > +{
> > + struct protection_domain *dom = to_pdomain(domain);
> > +
> > + if (unlikely(amd_iommu_np_cache)) {
>
> Is this case really so unlikely that it needs a static branch prediction
> hint?
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-04-15 18:18 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 18:47 [PATCH 0/9] iommu/amd: Convert the AMD iommu driver to the dma-iommu api Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` [PATCH 1/9] iommu/dma-iommu: Add iommu_map_atomic Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
[not found] ` <20190411184741.27540-2-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:30 ` Christoph Hellwig
2019-04-15 6:30 ` Christoph Hellwig
2019-04-15 6:30 ` Christoph Hellwig
2019-04-15 6:30 ` Christoph Hellwig
2019-04-11 18:47 ` [PATCH 2/9] iommu/dma-iommu: Add function to flush any cached not present IOTLB entries Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
2019-04-16 14:00 ` Robin Murphy
2019-04-16 14:00 ` Robin Murphy
2019-04-16 14:00 ` Robin Murphy
[not found] ` <82ce70dc-b370-3bb0-bce8-2d32db4d6a0d-5wv7dgnIgG8@public.gmane.org>
2019-04-16 16:40 ` Tom Murphy via iommu
2019-04-16 16:40 ` Tom Murphy
2019-04-16 16:40 ` Tom Murphy via iommu
2019-04-16 16:40 ` Tom Murphy
2019-04-11 18:47 ` [PATCH 3/9] iommu/dma-iommu: Add iommu_dma_copy_reserved_iova, iommu_dma_apply_resv_region to the dma-iommu api Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
[not found] ` <20190411184741.27540-4-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:31 ` Christoph Hellwig
2019-04-15 6:31 ` Christoph Hellwig
2019-04-15 6:31 ` Christoph Hellwig
2019-04-15 6:31 ` Christoph Hellwig
2019-04-16 13:22 ` Tom Murphy
2019-04-16 13:22 ` Tom Murphy
2019-04-16 13:22 ` Tom Murphy via iommu
2019-04-16 13:37 ` Robin Murphy
2019-04-16 13:37 ` Robin Murphy
2019-04-16 13:37 ` Robin Murphy
2019-04-11 18:47 ` [PATCH 4/9] iommu/dma-iommu: Add iommu_dma_map_page_coherent Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 6:33 ` Christoph Hellwig
2019-04-11 18:47 ` [PATCH 5/9] iommu/amd: Implement .flush_np_cache Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
[not found] ` <20190411184741.27540-6-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 6:33 ` Christoph Hellwig
2019-04-15 18:18 ` Tom Murphy [this message]
2019-04-15 18:18 ` Tom Murphy
2019-04-15 18:18 ` Tom Murphy via iommu
2019-04-11 18:47 ` [PATCH 6/9] iommu/amd: Implement map_atomic Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
2019-04-16 14:13 ` Robin Murphy
2019-04-16 14:13 ` Robin Murphy
2019-04-16 14:13 ` Robin Murphy
2019-04-11 18:47 ` [PATCH 7/9] iommu/amd: Use the dma-iommu api Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` [PATCH 8/9] iommu/amd: Clean up unused functions Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
[not found] ` <20190411184741.27540-9-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:22 ` Christoph Hellwig
2019-04-15 6:22 ` Christoph Hellwig
2019-04-15 6:22 ` Christoph Hellwig
2019-04-15 6:22 ` Christoph Hellwig
2019-04-11 18:47 ` [PATCH 9/9] iommu/amd: Add allocated domain to global list earlier Tom Murphy
2019-04-11 18:47 ` Tom Murphy
2019-04-11 18:47 ` Tom Murphy via iommu
2019-04-11 18:47 ` Tom Murphy
[not found] ` <20190411184741.27540-10-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:23 ` Christoph Hellwig
2019-04-15 6:23 ` Christoph Hellwig
2019-04-15 6:23 ` Christoph Hellwig
2019-04-15 6:23 ` Christoph Hellwig
2019-04-15 18:06 ` Tom Murphy
2019-04-15 18:06 ` Tom Murphy
2019-04-15 18:06 ` Tom Murphy via iommu
[not found] ` <20190411184741.27540-1-tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
2019-04-15 6:18 ` [PATCH 0/9] iommu/amd: Convert the AMD iommu driver to the dma-iommu api Christoph Hellwig
2019-04-15 6:18 ` Christoph Hellwig
2019-04-15 6:18 ` Christoph Hellwig
2019-04-15 6:18 ` Christoph Hellwig
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