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Re: qemu-xhci: no interrupts with 2.6.32.11 kernel [SOLVED]
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From: |
Christian Gudrian |
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Subject: |
Re: qemu-xhci: no interrupts with 2.6.32.11 kernel [SOLVED] |
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Date: |
Fri, 9 Feb 2024 20:56:04 +0100 |
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User-agent: |
Mozilla Thunderbird |
On 07.02.2024 23:10, Christian Gudrian wrote:
Is the kernel too old for the XHCI emulator or am I missing something else?
The ancient kernel wasn't honoring bits 4:7 in register hcs_params2
(max. number of event ring segments) and tried to allocate 2 segments
while QEMU only supports 1. That kills QEMU XHCI driver very early
during initialization.
I've patched the kernel appropriately (by replacing all occurences of
ERST_NUM_SEGS with the computed allowed maximum number).
XHCI is working now.
Christian