linux-kernel - Re: [PATCH v3 23/32] KVM: arm64: Make memcache anonymous in pgtable allocator

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Message-ID: <20210304194431.GC21950@willie-the-truck>
Date:   Thu, 4 Mar 2021 19:44:32 +0000
From:   Will Deacon <will@...nel.org>
To:     Quentin Perret <qperret@...gle.com>
Cc:     catalin.marinas@....com, maz@...nel.org, james.morse@....com,
        julien.thierry.kdev@...il.com, suzuki.poulose@....com,
        android-kvm@...gle.com, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, kvmarm@...ts.cs.columbia.edu,
        linux-arm-kernel@...ts.infradead.org, tabba@...gle.com,
        mark.rutland@....com, dbrazdil@...gle.com, mate.toth-pal@....com,
        seanjc@...gle.com, robh+dt@...nel.org
Subject: Re: [PATCH v3 23/32] KVM: arm64: Make memcache anonymous in pgtable
 allocator

On Tue, Mar 02, 2021 at 02:59:53PM +0000, Quentin Perret wrote:
> The current stage2 page-table allocator uses a memcache to get
> pre-allocated pages when it needs any. To allow re-using this code at
> EL2 which uses a concept of memory pools, make the memcache argument of
> kvm_pgtable_stage2_map() anonymous, and let the mm_ops zalloc_page()
> callbacks use it the way they need to.
> 
> Signed-off-by: Quentin Perret <qperret@...gle.com>
> ---
>  arch/arm64/include/asm/kvm_pgtable.h | 6 +++---
>  arch/arm64/kvm/hyp/pgtable.c         | 4 ++--
>  2 files changed, 5 insertions(+), 5 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Will