From: valmiki <valmikibow@gmail.com>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
linux-pci <linux-pci@vger.kernel.org>
Cc: Alex Williamson <alex.williamson@redhat.com>,
"kevin.tian@intel.com" <kevin.tian@intel.com>
Subject: Invalidation in SMMU v3
Date: Sun, 3 Dec 2017 19:26:31 +0530 [thread overview]
Message-ID: <c2c2c5b0-7533-632b-f69e-050f125bef06@gmail.com> (raw)
In-Reply-To: <e8effeac-bdfb-34dd-63e5-eb3fb08fd540@gmail.com>
Hi Jean,
In PASID flow arm_smmu_atc_inv_master_all is called where size and iova
of arm_smmu_atc_inv_to_cmd are zero and no address is being filled in
struct arm_smmu_cmdq_ent->atc.addr.
So how will smmu hardware know if there are any ats translations
requested or not ?
How invalidation are carried out in PASID flow w.r.t address and size?
Regards,
Valmiki
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WARNING: multiple messages have this Message-ID (diff)
From: valmiki <valmikibow-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Jean-Philippe Brucker
<jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-pci <linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Invalidation in SMMU v3
Date: Sun, 3 Dec 2017 19:26:31 +0530 [thread overview]
Message-ID: <c2c2c5b0-7533-632b-f69e-050f125bef06@gmail.com> (raw)
In-Reply-To: <e8effeac-bdfb-34dd-63e5-eb3fb08fd540-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Hi Jean,
In PASID flow arm_smmu_atc_inv_master_all is called where size and iova
of arm_smmu_atc_inv_to_cmd are zero and no address is being filled in
struct arm_smmu_cmdq_ent->atc.addr.
So how will smmu hardware know if there are any ats translations
requested or not ?
How invalidation are carried out in PASID flow w.r.t address and size?
Regards,
Valmiki
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
next prev parent reply other threads:[~2017-12-03 13:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-12 18:01 VFIO on ARM64 valmiki
2017-09-12 18:27 ` Alex Williamson
2017-09-12 18:27 ` Alex Williamson
2017-09-13 1:20 ` Jean-Philippe Brucker
2017-09-13 17:38 ` valmiki
2017-09-13 18:57 ` Jean-Philippe Brucker
2017-12-03 13:56 ` valmiki [this message]
2017-12-03 13:56 ` Invalidation in SMMU v3 valmiki
2017-12-04 11:12 ` Jean-Philippe Brucker
2017-12-04 11:12 ` Jean-Philippe Brucker
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