linux-kernel - Re: [PATCH v3 1/7] arm64: tlb: Refactor the core flush algorithm of __flush_tlb

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Date:   Mon, 17 Apr 2023 17:17:47 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Raghavendra Rao Ananta <rananta@...gle.com>
Cc:     Oliver Upton <oliver.upton@...ux.dev>,
        Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v3 1/7] arm64: tlb: Refactor the core flush algorithm of
 __flush_tlb_range

On Fri, Apr 14, 2023 at 05:29:16PM +0000, Raghavendra Rao Ananta wrote:
> Currently, the core TLB flush functionality of __flush_tlb_range()
> hardcodes vae1is (and variants) for the flush operation. In the
> upcoming patches, the KVM code reuses this core algorithm with
> ipas2e1is for range based TLB invalidations based on the IPA.
> Hence, extract the core flush functionality of __flush_tlb_range()
> into its own macro that accepts an 'op' argument to pass any
> TLBI operation, such that other callers (KVM) can benefit.
> 
> No functional changes intended.
> 
> Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>

Reviewed-by: Catalin Marinas <catalin.marinas@....com>