27 Aug
2025
27 Aug
'25
10:21 a.m.
On Tue, Aug 26, 2025 at 06:52:11PM +0000, Parav Pandit wrote:
If it does not, and a user pull out the working device, how does your patch help?
A driver must tell that it will not follow broken ancient behaviour and at that
point device would stop its ancient backward compatibility mode.
I don't know what is "ancient backward compatibility mode".
Let me explain. Sadly, CSPs virtio pci device implementation is done such a way that, it works with ancient Linux kernel which does not have commit 43bb40c5b9265.
OK we are getting new information here.
So let me summarize. There's a virtual system that pretends, to the guest, that device was removed by surprise removal, but actually device is there and is still doing DMA. Is that a fair summary?
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MST