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[common/idd] recovery: reserve IVSHMEM control region

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Define a fixed, protocol-independent recovery ABI in the final 64 KiB
of IVSHMEM.

Provide crash-safe multi-client requests and coherent producer status.

Exclude the region from LGMP allocation and frame capacity so future
protocol mismatches retain a stable control path.
This commit is contained in:
Geoffrey McRae
2026-08-11 22:08:34 +10:00
parent 61a49ebaba
commit 9898e9bcec
5 changed files with 285 additions and 6 deletions
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2
idd/LGIdd/transport/lgmp/CLGMPTransport.cpp
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@@ -181,5 +181,5 @@ FrameMemoryLimits CLGMPTransport::GetMemoryLimits() const
DirectFrameBufferMemory CLGMPTransport::GetDirectMemory() const
{
return {m_ivshmem.GetMem(), m_ivshmem.GetSize()};
return {m_ivshmem.GetMem(), m_ivshmem.GetFullSize()};
}