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[v2,0/6] mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code

Message ID 20230315030359.14162-1-palmer@rivosinc.com (mailing list archive)
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Series mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code | expand

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Palmer Dabbelt March 15, 2023, 3:03 a.m. UTC 
When reviewing
<https://lore.kernel.org/r/20221029084715.3669204-1-tongtiangen@huawei.com>
I noticed that the arch-specific VM_FAULT flags used by arm and s390
alias with VM_FAULT_HINDEX_MASK.  I'm not sure if it's possible to
manifest this as a bug, but it certainly seems fragile.

I'm including that original patch this time in the hope that makes it
easier for folks to review.  There were some boring conflicts so I
figured I'd rebase rather than pinging again.

Changes since v1 <20221203030356.3917-1-palmer@rivosinc.com>:

* Add the original patch, and reorder the RISC-V stuff first.
* Rebased on v6.3-rc2
* Moved the comment about VM_FAULT_ARCH_* to the patch that adds those,
  rather than the patch that adds 0s.