linux-kernel - Re: [RFC PATCH 1/1] arm64: implement live patching

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Message-ID: <1a6306bb029779e26d92ba3e2608e500ce47c6f7.camel@gmail.com>
Date:   Tue, 08 Jun 2021 17:12:15 -0700
From:   Suraj Jitindar Singh <sjitindarsingh@...il.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        live-patching@...r.kernel.org, catalin.marinas@....com,
        will@...nel.org, mark.rutland@....com,
        madvenka@...ux.microsoft.com, duwe@....de, benh@...nel.crashing.org
Subject: Re: [RFC PATCH 1/1] arm64: implement live patching

On Mon, 2021-06-07 at 18:01 +0100, Mark Brown wrote:
> On Fri, Jun 04, 2021 at 04:59:30PM -0700, Suraj Jitindar Singh wrote:
> 
> > + * CONFIG_ARM64_BTI_KERNEL:
> > + *	- Inserts a hint #0x22 on function entry if the function is
> > called
> > + *	  indirectly (to satisfy BTI requirements), which is inserted
> > before
> > + *	  the two nops from above.
> 
> Please write out the symbolic name of the HINT (BTI C here) rather
> than
> the number, it helps with readability especially in a case like this
> where there are multiple relevant hints.

Thanks for taking a look, I will keep that in mind for when I resend.