[Backport v3.5-branch] drivers: virtualization: Map ivshmem-v2 sections individually #65812
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Recent changes to the arm64 MMU code mean that you can no longer map R/O memory as R/W. Mapping R/W memory now causes a cache invalidation instruction (DC IVAC) that requires write permissions or else a fault is generated. Modify ivshmem-v2 to map each R/O and R/W section individually Signed-off-by: Grant Ramsay <[email protected]> (cherry picked from commit 64cc076)
This driver assumed the ivshmem-v2 output sections would be mapped contiguously, which is no longer true. Modify eth_ivshmem to treat each output section independently Signed-off-by: Grant Ramsay <[email protected]> (cherry picked from commit 82644a3)
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galak,
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tbursztyka and
jukkar
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@gramsay0 This needs a bug report in order to be backported. |
@henrikbrixandersen sorry about that. I have created a ticket: #65894 |
jhedberg
approved these changes
Dec 1, 2023
fabiobaltieri
approved these changes
Dec 1, 2023
tbursztyka
approved these changes
Dec 4, 2023
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Backport 82644a3~2..82644a3 from #65095.
Fixes: #65894