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

Message ID	20230315030359.14162-1-palmer@rivosinc.com (mailing list archive)
Headers	show Return-Path: <linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org> Subject: [PATCH v2 0/6] mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code Date: Tue, 14 Mar 2023 20:03:53 -0700 Message-Id: <20230315030359.14162-1-palmer@rivosinc.com> MIME-Version: 1.0 Cc: linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org From: Palmer Dabbelt <palmer@rivosinc.com> To: akpm@linux-foundation.org Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" <linux-riscv-bounces@lists.infradead.org> Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org
Series	mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code \| expand [v2,0/6] mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code [v2,1/6] riscv/mm/fault: simplify code for do_page_fault() [v2,2/6] mm: Add a leading 0 to the VM_FAULT_* types [v2,3/6] mm: Add VM_FAULT_ARCH_* codes [v2,4/6] RISC-V: fault: Convert to VM_FAULT_ARCH_* codes [v2,5/6] arm: fault: Convert to VM_FAULT_ARCH_* codes [v2,6/6] s390: fault: Convert to VM_FAULT_ARCH_* codes

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20230315030359.14162-1-palmer@rivosinc.com (mailing list archive)

Headers

Subject: [PATCH v2 0/6] mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code
Date: Tue, 14 Mar 2023 20:03:53 -0700
Message-Id: <20230315030359.14162-1-palmer@rivosinc.com>
MIME-Version: 1.0
Cc: linux-mm@kvack.org, linux-riscv@lists.infradead.org,
 linux-s390@vger.kernel.org,
  linux-arm-kernel@lists.infradead.org
From: Palmer Dabbelt <palmer@rivosinc.com>
To: akpm@linux-foundation.org
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Series

mm: Stop alaising VM_FAULT_HINDEX_MASK in arch code | expand

Message

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.