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docs/venus: update instructions around Intel pat issue

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Now that the QEMU switch honor-guest-pat has landed in-tree, let's
update the doc with the latest instructions along with the follow up
QEMU feature request.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40689>
This commit is contained in:
Yiwei Zhang 2026-03-28 15:17:44 -07:00 • committed by Marge Bot
parent 34e090ae11
commit ee1f42075d
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19
docs/drivers/venus.rst
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@ -27,25 +27,24 @@ implementation-defined behaviors to support ``vkMapMemory`` (see `below
drivers meeting the requirements. It has only been tested with:
- ANV 21.1 or later
- Note: with Intel Meteor Lake or xe driver, you need 6.16+ kernel and 11.0+
QEMU with ``-accel kvm,honor-guest-pat=on`` (request to default that on is
`here <https://gitlab.com/qemu-project/qemu/-/work_items/3357>`__).
- RADV 21.1 or later
- Note: you need 6.13+ kernel that already has
`KVM: Stop grabbing references to PFNMAP'd pages
<https://lore.kernel.org/all/20241010182427.1434605-1-seanjc@google.com/>`__.
- Note: for dGPU paired with Intel CPU, you need 6.11+ kernel patched with
`KVM: VMX: Always honor guest PAT on CPUs that support self-snoop
<https://lore.kernel.org/all/20240309010929.1403984-6-seanjc@google.com/>`__,
or 6.16+ kernel with VMM to opt-out ``KVM_X86_QUIRK_IGNORE_GUEST_PAT`` (QEMU
request is `here <https://gitlab.com/qemu-project/qemu/-/issues/2943>`__).
- Note: for dGPU paired with Intel CPU, you need 6.16+ kernel and 11.0+ QEMU
with ``-accel kvm,honor-guest-pat=on`` (request to default that on is
`here <https://gitlab.com/qemu-project/qemu/-/work_items/3357>`__).
- Turnip 22.0 or later
- PanVK 25.1 or later
- Lavapipe 22.1 or later
- Mali (Proprietary) r32p0 or later
- NVIDIA (Proprietary) 570.86 or later
- Note: if paired with Intel CPU, you need 6.11+ kernel patched with
`KVM: VMX: Always honor guest PAT on CPUs that support self-snoop
<https://lore.kernel.org/all/20240309010929.1403984-6-seanjc@google.com/>`__,
or 6.16+ kernel with VMM to opt-out ``KVM_X86_QUIRK_IGNORE_GUEST_PAT`` (QEMU
request is `here <https://gitlab.com/qemu-project/qemu/-/issues/2943>`__).
- Note: if paired with Intel CPU, you need 6.16+ kernel and 11.0+ QEMU with
``-accel kvm,honor-guest-pat=on`` (request to default that on is
`here <https://gitlab.com/qemu-project/qemu/-/work_items/3357>`__).
The Venus driver requires supports for