Re: [PATCH] KVM: arm64: Drop PTE_S2_MEMATTR_MASK

From: Marc Zyngier
Date: Thu Apr 16 2020 - 13:24:36 EST


On 2020-04-16 18:05, Will Deacon wrote:
On Thu, Apr 16, 2020 at 04:36:05PM +0100, Marc Zyngier wrote:
On Wed, 15 Apr 2020 18:57:46 +0800
Zenghui Yu <yuzenghui@xxxxxxxxxx> wrote:

> The only user of PTE_S2_MEMATTR_MASK macro had been removed since
> commit a501e32430d4 ("arm64: Clean up the default pgprot setting").
> It has been about six years and no one has used it again.
>
> Let's drop it.
>
> Signed-off-by: Zenghui Yu <yuzenghui@xxxxxxxxxx>
> ---
> arch/arm64/include/asm/pgtable-hwdef.h | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
> index 6bf5e650da78..99315bdca0e6 100644
> --- a/arch/arm64/include/asm/pgtable-hwdef.h
> +++ b/arch/arm64/include/asm/pgtable-hwdef.h
> @@ -190,7 +190,6 @@
> * Memory Attribute override for Stage-2 (MemAttr[3:0])
> */
> #define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2)
> -#define PTE_S2_MEMATTR_MASK (_AT(pteval_t, 0xf) << 2)
>
> /*
> * EL2/HYP PTE/PMD definitions

Looks good to me. Catalin, Will: do you want to take this directly? If
so please add my:

Acked-by: Marc Zyngier <maz@xxxxxxxxxx>

Otherwise, I'll route it via the KVM tree.

I can take it for 5.8 if it's not urgent.

It has been there 6 years, I think we can cope with another few months... ;-)

Thanks,

M.
--
Jazz is not dead. It just smells funny...