linux-kernel - Re: [PATCH 01/29] arm64: mm: Use non-global mappings for kernel space

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Message-ID: <20180228120828.GB8453@kroah.com>
Date:   Wed, 28 Feb 2018 13:08:28 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Alex Shi <alex.shi@...aro.org>
Cc:     Marc Zyngier <marc.zyngier@....com>,
        Will Deacon <will.deacon@....com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        stable@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/29] arm64: mm: Use non-global mappings for kernel space

On Wed, Feb 28, 2018 at 11:56:23AM +0800, Alex Shi wrote:
> From: Will Deacon <will.deacon@....com>
> 
> commit e046eb0c9bf2 upstream.
> 
> In preparation for unmapping the kernel whilst running in userspace,
> make the kernel mappings non-global so we can avoid expensive TLB
> invalidation on kernel exit to userspace.
> 
> Reviewed-by: Mark Rutland <mark.rutland@....com>
> Tested-by: Laura Abbott <labbott@...hat.com>
> Tested-by: Shanker Donthineni <shankerd@...eaurora.org>
> Signed-off-by: Will Deacon <will.deacon@....com>
> Signed-off-by: Alex Shi <alex.shi@...aro.org>
> 
> Conflicts:
> 	skip PTE_RDONLY of PAGE_NONE in arch/arm64/include/asm/pgtable-prot.h

These "Conflicts:" lines need to be removed, or put below the --- line
please.

thanks,

greg k-h