Re: [PATCH v2 3/4] riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb

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To: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
Subject: Re: [PATCH v2 3/4] riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb
From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Date: Fri, 28 Jul 2023 14:51:31 +0100
Cc: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, "Aneesh Kumar K . V" <aneesh.kumar@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Mayuresh Chitale <mchitale@xxxxxxxxxxxxxxxx>, Vincent Chen <vincent.chen@xxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, <linux-arch@xxxxxxxxxxxxxxx>, <linux-mm@xxxxxxxxx>, <linux-riscv@xxxxxxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <20230728-f2cd8ddd252c2ece2e438790@orel>
References: <20230727185553.980262-1-alexghiti@rivosinc.com> <20230727185553.980262-4-alexghiti@rivosinc.com> <20230728-f2cd8ddd252c2ece2e438790@orel>

On Fri, Jul 28, 2023 at 03:32:35PM +0200, Andrew Jones wrote:
> On Thu, Jul 27, 2023 at 08:55:52PM +0200, Alexandre Ghiti wrote:

> > +	else if (size == (unsigned long)-1)
> 
> The more we scatter this -1 around, especially now that we also need to
> cast it, the more I think we should introduce a #define for it.

Please.

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References:
- [PATCH v2 0/4] riscv: tlb flush improvements
  - From: Alexandre Ghiti
- [PATCH v2 3/4] riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb
  - From: Alexandre Ghiti
- Re: [PATCH v2 3/4] riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb
  - From: Andrew Jones

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