Re: [PATCH v4 00/12] target/arm mte fixes

[Richard Henderson]

On 4/8/21 5:47 AM, Peter Maydell wrote:
> > Richard Henderson (12):
> >    accel/tcg: Preserve PAGE_ANON when changing page permissions
> >    target/arm: Check PAGE_WRITE_ORG for MTE writeability
> >    target/arm: Fix mte_checkN
> >    target/arm: Split out mte_probe_int
> >    target/arm: Fix unaligned checks for mte_check1, mte_probe1
> >    test/tcg/aarch64: Add mte-5
> >    target/arm: Replace MTEDESC ESIZE+TSIZE with SIZEM1
> >    target/arm: Merge mte_check1, mte_checkN
> >    target/arm: Rename mte_probe1 to mte_probe
> >    target/arm: Simplify sve mte checking
> >    target/arm: Remove log2_esize parameter to gen_mte_checkN
> >    exec: Fix overlap of PAGE_ANON and PAGE_TARGET_1
>
> So, what should we do with this series for 6.0 ? We'll be at rc3
> next week, and this big a change seems risky at this point
> in the cycle. Is there anything in here that's worth extracting
> as a for-6.0 change? (maybe patches 1, 2, 12?)

Definitely 12, since that broke BTI.

Patches 1 and 2 are certainly simple enough.

Otherwise... the rest would be nice to have.  It's quite isolated to mte=on. 
If you defer, I guess that's fine too -- the bug report did come in quite late.


r~