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Date: Fri, 27 Nov 2015 18:43:06 +0530
From: Pratyush Anand <panand@redhat.com>
Subject: Re: [PATCH v12 08/16] arm64/kexec: Add core kexec support
Message-ID: <20151127131306.GE23908@dhcppc13.redhat.com>
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To: Geoff Levand <geoff@infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>, marc.zyngier@arm.com, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, AKASHI Takahiro <takahiro.akashi@linaro.org>, linux-arm-kernel@lists.infradead.org, Dave Young <dyoung@redhat.com>, kexec@lists.infradead.org, christoffer.dall@linaro.org

Hi Geoff,

On 24/11/2015:10:25:34 PM, Geoff Levand wrote:
> +	/* Test the entry flags. */
> +.Ltest_source:
> +	tbz	x18, IND_SOURCE_BIT, .Ltest_indirection
> +
> +	mov x20, x13				/*  x20 = copy dest */
> +	mov x21, x12				/*  x21 = copy src */

Till v10 we had here invalidation for relocated destination page to PoC. I could
not understand, why it was removed. Removing that piece of code breaks kexec
booting with mustang. I need [1] to kexec boot into second kernel with mustang
platform.

[1]
https://github.com/pratyushanand/linux/commit/431e3247391981a1e8b2864a83a5743e8a274cb9

~Pratyush

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