linux-kernel - Re: [PATCH 2/6] x86/sev: Fix nonistr violation

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Message-ID: <X/bWK1tNB6mtm0Bu@hirez.programming.kicks-ass.net>
Date:   Thu, 7 Jan 2021 10:36:43 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        sfr@...b.auug.org.au, tony.luck@...el.com
Subject: Re: [PATCH 2/6] x86/sev: Fix nonistr violation

On Wed, Jan 06, 2021 at 09:59:17AM -0800, Randy Dunlap wrote:
> On 1/6/21 6:36 AM, Peter Zijlstra wrote:
> > When the compiler fails to inline; we violate nonisntr:
> > 
> >   vmlinux.o: warning: objtool: __sev_es_nmi_complete()+0xc7: call to sev_es_wr_ghcb_msr() leaves .noinstr.text section
> 
> I am still seeing (a variant of) this one:
> 
> vmlinux.o: warning: objtool: __sev_es_nmi_complete()+0xce: call to __wrmsr.constprop.14() leaves .noinstr.text section

Gah, sorry, I managed to mess up my .config :/ /me goes try again.