linux-kernel - Re: [PATCH AUTOSEL 4.14 3/6] arm64: Add missing Set/Way CMO encodings

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Date:   Fri, 16 Jun 2023 21:34:05 +0200
From:   Pavel Machek <pavel@...x.de>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>,
        Cornelia Huck <cohuck@...hat.com>,
        Steven Price <steven.price@....com>,
        Oliver Upton <oliver.upton@...ux.dev>, catalin.marinas@....com,
        will@...nel.org, broonie@...nel.org, james.morse@....com,
        kristina.martsenko@....com, robh@...nel.org,
        jintack.lim@...aro.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH AUTOSEL 4.14 3/6] arm64: Add missing Set/Way CMO encodings

Hi!

> From: Marc Zyngier <maz@...nel.org>
> 
> [ Upstream commit 8d0f019e4c4f2ee2de81efd9bf1c27e9fb3c0460 ]
> 
> Add the missing Set/Way CMOs that apply to tagged memory.

We are not adding users of these in 4.14, so we don't need the
defines, either... right?

Best regards,
							Pavel
							
> +++ b/arch/arm64/include/asm/sysreg.h
> @@ -98,8 +98,14 @@
>  				       (!!x)<<8 | 0x1f)
>  
>  #define SYS_DC_ISW			sys_insn(1, 0, 7, 6, 2)
> +#define SYS_DC_IGSW			sys_insn(1, 0, 7, 6, 4)
> +#define SYS_DC_IGDSW			sys_insn(1, 0, 7, 6, 6)
>  #define SYS_DC_CSW			sys_insn(1, 0, 7, 10, 2)
> +#define SYS_DC_CGSW			sys_insn(1, 0, 7, 10, 4)
> +#define SYS_DC_CGDSW			sys_insn(1, 0, 7, 10, 6)
>  #define SYS_DC_CISW			sys_insn(1, 0, 7, 14, 2)
> +#define SYS_DC_CIGSW			sys_insn(1, 0, 7, 14, 4)
> +#define SYS_DC_CIGDSW			sys_insn(1, 0, 7, 14, 6)
>  
>  #define SYS_OSDTRRX_EL1			sys_reg(2, 0, 0, 0, 2)
>  #define SYS_MDCCINT_EL1			sys_reg(2, 0, 0, 2, 0)

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