From: Jason Gunthorpe <jgg@nvidia.com>
To: Alexey Kardashevskiy <aik@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
Kees Cook <kees@kernel.org>, Lukas Wunner <lukas@wunner.de>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Bjorn Helgaas <helgaas@kernel.org>,
David Howells <dhowells@redhat.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
David Woodhouse <dwmw2@infradead.org>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-pci@vger.kernel.org, linux-cxl@vger.kernel.org,
linux-coco@lists.linux.dev, keyrings@vger.kernel.org,
linux-crypto@vger.kernel.org, linuxarm@huawei.com,
David Box <david.e.box@intel.com>,
"Li, Ming" <ming4.li@intel.com>,
Ilpo Jarvinen <ilpo.jarvinen@linux.intel.com>,
Alistair Francis <alistair.francis@wdc.com>,
Wilfred Mallawa <wilfred.mallawa@wdc.com>,
Damien Le Moal <dlemoal@kernel.org>,
Dhaval Giani <dhaval.giani@amd.com>,
Gobikrishna Dhanuskodi <gdhanuskodi@nvidia.com>,
Peter Gonda <pgonda@google.com>,
Jerome Glisse <jglisse@google.com>,
Sean Christopherson <seanjc@google.com>,
Alexander Graf <graf@amazon.com>,
Samuel Ortiz <sameo@rivosinc.com>, Jann Horn <jannh@google.com>
Subject: Re: [PATCH v2 08/18] PCI/CMA: Authenticate devices on enumeration
Date: Mon, 22 Jul 2024 09:06:42 -0300 [thread overview]
Message-ID: <20240722120642.GI1482543@nvidia.com> (raw)
In-Reply-To: <b297cfe0-c54f-4205-b102-ba53ec40344b@amd.com>
On Mon, Jul 22, 2024 at 08:19:23PM +1000, Alexey Kardashevskiy wrote:
> If there is vIOMMU, then the driver in the VM can decide whether it wants
> private or shared memory for DMA, pass that new flag to dma_map() and 1)
> have DMA memory allocated from the private pool (== no page state changes)
> and 2) have C-bit set in the vIOMMU page table (which is in the VM memory).
Not all HW supports a flow like that.
> My V1 says "all IOVA below X are private and above - shared" (which is a hw
> knob in absence of vIOMMU) and I set the X to all '1's just to mark it all
> private.
Is that portable to other implementations?
Jason
next prev parent reply other threads:[~2024-07-22 12:06 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-30 19:35 [PATCH v2 00/18] PCI device authentication Lukas Wunner
2024-06-30 19:36 ` [PATCH v2 01/18] X.509: Make certificate parser public Lukas Wunner
2024-07-10 2:46 ` Alistair Francis
2024-06-30 19:37 ` [PATCH v2 02/18] X.509: Parse Subject Alternative Name in certificates Lukas Wunner
2024-07-10 2:48 ` Alistair Francis
2024-06-30 19:38 ` [PATCH v2 03/18] X.509: Move certificate length retrieval into new helper Lukas Wunner
2024-07-10 2:49 ` Alistair Francis
2024-07-18 11:04 ` Jonathan Cameron
2024-06-30 19:39 ` [PATCH v2 04/18] certs: Create blacklist keyring earlier Lukas Wunner
2024-07-10 2:52 ` Alistair Francis
2024-06-30 19:40 ` [PATCH v2 05/18] crypto: akcipher - Support more than one signature encoding Lukas Wunner
2024-06-30 19:41 ` [PATCH v2 06/18] crypto: ecdsa - Support P1363 " Lukas Wunner
2024-06-30 22:10 ` Herbert Xu
2024-07-29 14:27 ` Lukas Wunner
2024-06-30 19:42 ` [PATCH v2 07/18] spdm: Introduce library to authenticate devices Lukas Wunner
2024-06-30 21:29 ` Jeff Johnson
2024-07-08 9:57 ` Alexey Kardashevskiy
2024-07-08 12:54 ` Lukas Wunner
2024-07-09 0:45 ` Alexey Kardashevskiy
2024-07-09 8:49 ` Lukas Wunner
2024-07-09 5:09 ` Dan Williams
2024-07-18 11:42 ` Jonathan Cameron
2024-07-09 15:00 ` Jeff Johnson
2024-07-18 14:24 ` Jonathan Cameron
2024-06-30 19:43 ` [PATCH v2 08/18] PCI/CMA: Authenticate devices on enumeration Lukas Wunner
2024-07-09 18:10 ` Dan Williams
2024-07-09 19:32 ` Lukas Wunner
2024-07-09 23:31 ` Dan Williams
2024-07-11 15:00 ` Lukas Wunner
2024-07-11 17:50 ` Dan Williams
2024-07-12 0:50 ` Damien Le Moal
2024-07-14 8:42 ` Lukas Wunner
2024-07-15 17:21 ` Kees Cook
2024-07-15 18:12 ` Jason Gunthorpe
2024-07-15 20:36 ` Dan Williams
2024-07-15 22:02 ` Jason Gunthorpe
2024-07-15 22:17 ` Damien Le Moal
2024-07-15 23:03 ` Jason Gunthorpe
2024-07-15 23:26 ` Damien Le Moal
2024-07-15 23:42 ` Jason Gunthorpe
2024-07-15 23:57 ` Damien Le Moal
2024-07-16 0:11 ` Jason Gunthorpe
2024-07-16 1:23 ` Dan Williams
2024-07-15 22:50 ` Dan Williams
2024-07-15 23:21 ` Jason Gunthorpe
2024-07-15 23:37 ` Dan Williams
2024-07-15 23:55 ` Jason Gunthorpe
2024-07-16 1:35 ` Dan Williams
2024-07-22 10:19 ` Alexey Kardashevskiy
2024-07-22 12:06 ` Jason Gunthorpe [this message]
2024-07-23 4:26 ` Alexey Kardashevskiy
2024-07-23 12:58 ` Jason Gunthorpe
2024-07-15 20:19 ` Dan Williams
2024-07-15 20:08 ` Dan Williams
2024-06-30 19:44 ` [PATCH v2 09/18] PCI/CMA: Validate Subject Alternative Name in certificates Lukas Wunner
2024-07-10 20:35 ` Dan Williams
2024-06-30 19:45 ` [PATCH v2 10/18] PCI/CMA: Reauthenticate devices on reset and resume Lukas Wunner
2024-07-10 3:40 ` Alistair Francis
2024-07-10 23:23 ` Dan Williams
2024-07-18 15:01 ` Jonathan Cameron
2024-06-30 19:46 ` [PATCH v2 11/18] PCI/CMA: Expose in sysfs whether devices are authenticated Lukas Wunner
2024-07-17 23:17 ` Dan Williams
2024-07-18 15:11 ` Jonathan Cameron
2024-06-30 19:47 ` [PATCH v2 12/18] PCI/CMA: Expose certificates in sysfs Lukas Wunner
2024-07-18 2:43 ` Dan Williams
2024-07-18 15:16 ` Jonathan Cameron
2024-07-18 15:19 ` Jonathan Cameron
2024-06-30 19:48 ` [PATCH v2 13/18] sysfs: Allow bin_attributes to be added to groups Lukas Wunner
2024-07-04 10:13 ` Greg Kroah-Hartman
2024-07-12 3:49 ` Alistair Francis
2024-07-18 15:22 ` Jonathan Cameron
2024-06-30 19:49 ` [PATCH v2 14/18] sysfs: Allow symlinks to be added between sibling groups Lukas Wunner
2024-07-04 10:14 ` Greg Kroah-Hartman
2024-07-18 15:36 ` Jonathan Cameron
2024-06-30 19:50 ` [PATCH v2 15/18] PCI/CMA: Expose a log of received signatures in sysfs Lukas Wunner
2024-07-18 15:56 ` Jonathan Cameron
2024-06-30 19:51 ` [PATCH v2 16/18] spdm: Limit memory consumed by log of received signatures Lukas Wunner
2024-07-18 16:03 ` Jonathan Cameron
2024-06-30 19:52 ` [PATCH v2 17/18] spdm: Authenticate devices despite invalid certificate chain Lukas Wunner
2024-07-18 16:08 ` Jonathan Cameron
2024-06-30 19:53 ` [PATCH v2 18/18] spdm: Allow control of next requester nonce through sysfs Lukas Wunner
2024-07-18 16:11 ` Jonathan Cameron
2024-07-08 9:47 ` [PATCH v2 00/18] PCI device authentication Alexey Kardashevskiy
2024-07-08 13:35 ` Lukas Wunner
2025-02-11 1:30 ` Alexey Kardashevskiy
2025-02-12 16:36 ` Lukas Wunner
2025-05-20 8:35 ` Alexey Kardashevskiy
2025-05-29 5:29 ` Alexey Kardashevskiy
2025-05-29 9:40 ` Lukas Wunner
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