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Date: Wed, 16 Dec 2015 16:02:59 +0530
From: Pratyush Anand <panand@redhat.com>
Subject: Re: [PATCH v12 08/16] arm64/kexec: Add core kexec support
Message-ID: <20151216103259.GA316@dhcppc13.redhat.com>
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To: James Morse <james.morse@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>, Geoff Levand <geoff@infradead.org>, Will Deacon <will.deacon@arm.com>, kexec@lists.infradead.org, AKASHI Takahiro <takahiro.akashi@linaro.org>, linux-arm-kernel@lists.infradead.org, Catalin Marinas <catalin.marinas@arm.com>, marc.zyngier@arm.com, christoffer.dall@linaro.org

On 16/12/2015:09:30:34 AM, James Morse wrote:
> On 16/12/15 07:18, Pratyush Anand wrote:
> > We execute arm64_relocate_new_kernel() code with I-cache disabled. So, do we
> > really need to invalidate I-cache?
> 
> I got bitten by this, see Mark's earlier reply[0]:
> 
> Mark Rutland wrote:
> > The SCTLR_ELx.I only affects the attributes that the I-cache uses to
> > fetch with, not whether it is enabled (it cannot be disabled
> > architecturally).

Thanks James for pointing to it. I had missed that.

~Pratyush

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