Re: Is the fix for "DMA MMIO reentrancy" in qemu stable now?

[Alexander Bulekov]

On 230302 1627, byzero wrote:
> Hi,
> The bug class of MMIO reentrancy is fixed by adding a member "memory" in
> the struct "MemTxAttrs", but the patch only exists in 7.x version, which is

As a side-note, that patch doesn't fix the entire class of
DMA-reentrnacy bugs. There are still active DMA reentrancy issues. I
believe this is the closest we have to a "global" fix is which will
hopefully make it into mainline qemu soon:
https://lore.kernel.org/all/20230205040737.3567731-1-alxndr@bu.edu/

> only release version, but not stable version. The latest stable version is
> 6.1, and there is no stable version being released for nearly a year.
> According to the docs(https://www.qemu.org/download/): "The stable trees
> are located in branches named stable-X.YY branch, where X.YY is the release
> version.".
>   So I want to know that if the patch is stable enough? Will the community
> be possible to change the way for fixing the bug class?
>   thanks for reading this email.