linux-kernel - Re: [PATCH v15 0/6] arm64: Reorganize the unwinder and implement stack trace reliability checks

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Date:   Thu, 23 Jun 2022 18:32:24 +0100
From:   Will Deacon <will@...nel.org>
To:     madvenka@...ux.microsoft.com
Cc:     broonie@...nel.org, mark.rutland@....com, jpoimboe@...hat.com,
        ardb@...nel.org, nobuta.keiya@...itsu.com,
        sjitindarsingh@...il.com, catalin.marinas@....com,
        jamorris@...ux.microsoft.com, linux-arm-kernel@...ts.infradead.org,
        live-patching@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v15 0/6] arm64: Reorganize the unwinder and implement
 stack trace reliability checks

On Fri, Jun 17, 2022 at 04:07:11PM -0500, madvenka@...ux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@...ux.microsoft.com>
> 
> I have synced this patch series to v5.19-rc2.
> I have also removed the following patch.
> 
> 	[PATCH v14 7/7] arm64: Select HAVE_RELIABLE_STACKTRACE
> 
> as HAVE_RELIABLE_STACKTRACE depends on STACK_VALIDATION which is not present
> yet. This patch will be added in the future once Objtool is enhanced to
> provide stack validation in some form.

Given that it's not at all obvious that we're going to end up using objtool
for arm64, does this patch series gain us anything in isolation?

Will