From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: Auger Eric <eric.auger@redhat.com>
Cc: iommu@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
David Woodhouse <dwmw2@infradead.org>,
"Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>, Yi Liu <yi.l.liu@intel.com>,
jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH v2 01/10] iommu/vt-d: Introduce native SVM capable flag
Date: Mon, 18 Nov 2019 13:48:09 -0800 [thread overview]
Message-ID: <20191118134809.66b9fda4@jacob-builder> (raw)
In-Reply-To: <cb44724d-a396-0291-63c4-0039788fd26b@redhat.com>
On Mon, 18 Nov 2019 21:33:53 +0100
Auger Eric <eric.auger@redhat.com> wrote:
> Hi Jacob,
>
> On 11/18/19 8:42 PM, Jacob Pan wrote:
> > Shared Virtual Memory(SVM) is based on a collective set of hardware
> > features detected at runtime. There are requirements for matching
> > CPU and IOMMU capabilities.
> >
> > This patch introduces a flag which will be used to mark and test the
> > capability of SVM.
> >
> > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
> > Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
> > ---
> > include/linux/intel-iommu.h | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/include/linux/intel-iommu.h
> > b/include/linux/intel-iommu.h index ed11ef594378..63118991824c
> > 100644 --- a/include/linux/intel-iommu.h
> > +++ b/include/linux/intel-iommu.h
> > @@ -433,6 +433,7 @@ enum {
> >
> > #define VTD_FLAG_TRANS_PRE_ENABLED (1 << 0)
> > #define VTD_FLAG_IRQ_REMAP_PRE_ENABLED (1 << 1)
> > +#define VTD_FLAG_SVM_CAPABLE (1 << 2)
>
> I think I would rather squash this into the next patch as there is no
> user here.
>
Sure, I don't have strong preference. Baolu, what is your call?
> Thanks
>
> Eric
> >
> > extern int intel_iommu_sm;
> >
> >
>
[Jacob Pan]
next prev parent reply other threads:[~2019-11-18 21:43 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-18 19:42 [PATCH v2 00/10] VT-d Native Shared virtual memory cleanup and fixes Jacob Pan
2019-11-18 19:42 ` [PATCH v2 01/10] iommu/vt-d: Introduce native SVM capable flag Jacob Pan
2019-11-18 20:33 ` Auger Eric
2019-11-18 21:48 ` Jacob Pan [this message]
2019-11-19 2:55 ` Lu Baolu
2019-11-19 17:06 ` Jacob Pan
2019-11-18 19:42 ` [PATCH v2 02/10] iommu/vt-d: Fix CPU and IOMMU SVM feature matching checks Jacob Pan
2019-11-18 20:33 ` Auger Eric
2019-11-18 21:47 ` Jacob Pan
2019-11-19 8:02 ` Auger Eric
2019-11-19 17:32 ` Jacob Pan
2019-11-18 19:42 ` [PATCH v2 03/10] iommu/vt-d: Reject SVM bind for failed capability check Jacob Pan
2019-11-18 20:55 ` Auger Eric
2019-11-18 19:42 ` [PATCH v2 04/10] iommu/vt-d: Match CPU and IOMMU paging mode Jacob Pan
2019-11-18 20:55 ` Auger Eric
2019-11-18 21:52 ` Jacob Pan
2019-11-19 3:06 ` Lu Baolu
2019-11-19 8:04 ` Auger Eric
2019-11-19 17:12 ` Jacob Pan
2019-11-18 19:42 ` [PATCH v2 05/10] iommu/vt-d: Avoid duplicated code for PASID setup Jacob Pan
2019-11-18 20:59 ` Auger Eric
2019-11-18 19:42 ` [PATCH v2 06/10] iommu/vt-d: Fix off-by-one in PASID allocation Jacob Pan
2019-11-18 21:00 ` Auger Eric
2019-11-18 19:42 ` [PATCH v2 07/10] iommu/vt-d: Replace Intel specific PASID allocator with IOASID Jacob Pan
2019-11-18 21:11 ` Auger Eric
2019-11-18 22:16 ` Jacob Pan
2019-11-18 19:42 ` [PATCH v2 08/10] iommu/vt-d: Fix PASID cache flush Jacob Pan
2019-11-18 21:19 ` Auger Eric
2019-11-18 23:38 ` Jacob Pan
2019-11-18 19:42 ` [PATCH v2 09/10] iommu/vt-d: Avoid sending invalid page response Jacob Pan
2019-11-18 21:26 ` Auger Eric
2019-11-18 19:42 ` [PATCH v2 10/10] iommu/vt-d: Misc macro clean up for SVM Jacob Pan
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