62 lines
2.6 KiB
Diff
62 lines
2.6 KiB
Diff
From 229d362a429fdcf64f91cf2422ab6a402d0af3fa Mon Sep 17 00:00:00 2001
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Message-ID: <229d362a429fdcf64f91cf2422ab6a402d0af3fa.1752749355.git.jdenemar@redhat.com>
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From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
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Date: Wed, 19 Mar 2025 01:55:02 +0100
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Subject: [PATCH] docs: formatdomain: document intel-only IOMMU attributes
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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Reviewed-by: Peter Krempa <pkrempa@redhat.com>
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(cherry picked from commit 6291b0af3dd6a34b5a0f5f56dafa881d9c262f57)
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https://issues.redhat.com/browse/RHEL-50560
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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---
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docs/formatdomain.rst | 9 +++++----
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1 file changed, 5 insertions(+), 4 deletions(-)
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diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
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index 961d20a41d..a950ee1cb4 100644
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--- a/docs/formatdomain.rst
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+++ b/docs/formatdomain.rst
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@@ -8857,14 +8857,15 @@ Example:
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``caching_mode``
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The ``caching_mode`` attribute with possible values ``on`` and ``off`` can
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be used to turn on the VT-d caching mode (useful for assigned devices).
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- :since:`Since 3.4.0` (QEMU/KVM only)
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+ :since:`Since 3.4.0` (QEMU/KVM and ``intel`` model only)
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``eim``
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The ``eim`` attribute (with possible values ``on`` and ``off``) can be
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used to configure Extended Interrupt Mode. A q35 domain with split I/O
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APIC (as described in `Hypervisor features`_), and
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both interrupt remapping and EIM turned on for the IOMMU, will be able to
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- use more than 255 vCPUs. :since:`Since 3.4.0` (QEMU/KVM only)
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+ use more than 255 vCPUs. :since:`Since 3.4.0` (QEMU/KVM and ``intel`` model
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+ only)
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``iotlb``
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The ``iotlb`` attribute with possible values ``on`` and ``off`` can be
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@@ -8874,14 +8875,14 @@ Example:
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``aw_bits``
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The ``aw_bits`` attribute can be used to set the address width to allow
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mapping larger iova addresses in the guest. :since:`Since 6.5.0` (QEMU/KVM
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- only)
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+ and ``intel`` model only)
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``dma_translation``
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The ``dma_translation`` attribute with possible values ``on`` and ``off`` can
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be used to turn off the dma translation for IOMMU. It is useful when only
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interrupt remapping is required but dma translation overhead is unwanted, for
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example to efficiently enable more than 255 vCPUs.
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- :since:`Since 10.7.0` (QEMU/KVM only)
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+ :since:`Since 10.7.0` (QEMU/KVM and ``intel`` model only)
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The ``virtio`` IOMMU devices can further have ``address`` element as described
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in `Device addresses`_ (address has to by type of ``pci``).
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--
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2.50.1
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