From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Message-ID: <1496320249.6254.35.camel@infradead.org> Subject: Re: [RFC,20/30] iommu/arm-smmu-v3: Enable PCI PASID in masters From: David Woodhouse To: Jean-Philippe Brucker , Sinan Kaya In-Reply-To: References: <20170227195441.5170-21-jean-philippe.brucker@arm.com> Date: Thu, 01 Jun 2017 13:30:49 +0100 Mime-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lorenzo Pieralisi , Shanker Donthineni , kvm@vger.kernel.org, Catalin Marinas , Joerg Roedel , Sinan Kaya , Will Deacon , Alex Williamson , Harv Abdulhamid , iommu@lists.linux-foundation.org, linux-pci@vger.kernel.org, Bjorn Helgaas , Robin Murphy , linux-arm-kernel@lists.infradead.org, Nate Watterson Content-Type: multipart/mixed; boundary="===============5674100996070043003==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: --===============5674100996070043003== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-+VbdPxr+2DwhwmONzzbC" --=-+VbdPxr+2DwhwmONzzbC Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2017-06-01 at 13:30 +0100, Jean-Philippe Brucker wrote: >=20 > Yes, the current plan is to create a PASID (SSID) allocator that could be > used by AMD, Intel, ARM, and other IOMMUs. Currently the kfd driver > allocates PASIDs, but this will be done by the IOMMU subsystem in the > future. Writing the generic allocator isn't on my schedule for the next > few months, though. >=20 > I'm trying to implement the next version of SMMU SVM with the following > principles in mind, and Intel are reworking their PASID allocator similar= ly. Note that the Intel allocator is designed to work that way and to be easily made generic (that is, easily used from elsewhere). --=-+VbdPxr+2DwhwmONzzbC Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCDzUw ggSvMIIDl6ADAgECAhEA4CPLFRKDU4mtYW56VGdrITANBgkqhkiG9w0BAQsFADBvMQswCQYDVQQG EwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFsIFRU UCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290MB4XDTE0MTIyMjAw MDAwMFoXDTIwMDUzMDEwNDgzOFowgZsxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1h bmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMUEw PwYDVQQDEzhDT01PRE8gU0hBLTI1NiBDbGllbnQgQXV0aGVudGljYXRpb24gYW5kIFNlY3VyZSBF bWFpbCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAImxDdp6UxlOcFIdvFamBia3 uEngludRq/HwWhNJFaO0jBtgvHpRQqd5jKQi3xdhTpHVdiMKFNNKAn+2HQmAbqUEPdm6uxb+oYep 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--===============5674100996070043003== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============5674100996070043003==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: [RFC,20/30] iommu/arm-smmu-v3: Enable PCI PASID in masters Date: Thu, 01 Jun 2017 13:30:49 +0100 Message-ID: <1496320249.6254.35.camel@infradead.org> References: <20170227195441.5170-21-jean-philippe.brucker@arm.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0225674504823039690==" Cc: Shanker Donthineni , kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Catalin Marinas , Sinan Kaya , Will Deacon , Harv Abdulhamid , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Bjorn Helgaas , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Nate Watterson To: Jean-Philippe Brucker , Sinan Kaya Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: kvm.vger.kernel.org --===============0225674504823039690== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-+VbdPxr+2DwhwmONzzbC" --=-+VbdPxr+2DwhwmONzzbC Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2017-06-01 at 13:30 +0100, Jean-Philippe Brucker wrote: >=20 > Yes, the current plan is to create a PASID (SSID) allocator that could be > used by AMD, Intel, ARM, and other IOMMUs. Currently the kfd driver > allocates PASIDs, but this will be done by the IOMMU subsystem in the > future. Writing the generic allocator isn't on my schedule for the next > few months, though. >=20 > I'm trying to implement the next version of SMMU SVM with the following > principles in mind, and Intel are reworking their PASID allocator similar= ly. Note that the Intel allocator is designed to work that way and to be easily made generic (that is, easily used from elsewhere). --=-+VbdPxr+2DwhwmONzzbC Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCDzUw ggSvMIIDl6ADAgECAhEA4CPLFRKDU4mtYW56VGdrITANBgkqhkiG9w0BAQsFADBvMQswCQYDVQQG EwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFkZFRydXN0IEV4dGVybmFsIFRU UCBOZXR3b3JrMSIwIAYDVQQDExlBZGRUcnVzdCBFeHRlcm5hbCBDQSBSb290MB4XDTE0MTIyMjAw MDAwMFoXDTIwMDUzMDEwNDgzOFowgZsxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1h bmNoZXN0ZXIxEDAOBgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMUEw PwYDVQQDEzhDT01PRE8gU0hBLTI1NiBDbGllbnQgQXV0aGVudGljYXRpb24gYW5kIFNlY3VyZSBF bWFpbCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAImxDdp6UxlOcFIdvFamBia3 uEngludRq/HwWhNJFaO0jBtgvHpRQqd5jKQi3xdhTpHVdiMKFNNKAn+2HQmAbqUEPdm6uxb+oYep 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--===============0225674504823039690== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============0225674504823039690==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: dwmw2@infradead.org (David Woodhouse) Date: Thu, 01 Jun 2017 13:30:49 +0100 Subject: [RFC,20/30] iommu/arm-smmu-v3: Enable PCI PASID in masters In-Reply-To: References: <20170227195441.5170-21-jean-philippe.brucker@arm.com> Message-ID: <1496320249.6254.35.camel@infradead.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, 2017-06-01 at 13:30 +0100, Jean-Philippe Brucker wrote: > > Yes, the current plan is to create a PASID (SSID) allocator that could be > used by AMD, Intel, ARM, and other IOMMUs. Currently the kfd driver > allocates PASIDs, but this will be done by the IOMMU subsystem in the > future. Writing the generic allocator isn't on my schedule for the next > few months, though. > > I'm trying to implement the next version of SMMU SVM with the following > principles in mind, and Intel are reworking their PASID allocator similarly. Note that the Intel allocator is designed to work that way and to be easily made generic (that is, easily used from elsewhere). -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 4938 bytes Desc: not available URL: