linux-kernel - Re: [PATCH 1/2] x86/xen: Make the boot CPU idle task reliable

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Date:   Tue, 17 Mar 2020 10:13:57 +0100 (CET)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
cc:     jgross@...e.com, sstabellini@...nel.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, hpa@...or.com, jpoimboe@...hat.com,
        x86@...nel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        jslaby@...e.cz
Subject: Re: [PATCH 1/2] x86/xen: Make the boot CPU idle task reliable

On Mon, 16 Mar 2020, Boris Ostrovsky wrote:

> 
> 
> On 3/12/20 10:20 AM, Miroslav Benes wrote:
> > --- a/arch/x86/xen/xen-head.S
> > +++ b/arch/x86/xen/xen-head.S
> > @@ -35,7 +35,7 @@ SYM_CODE_START(startup_xen)
> >  	rep __ASM_SIZE(stos)
> >  
> >  	mov %_ASM_SI, xen_start_info
> > -	mov $init_thread_union+THREAD_SIZE, %_ASM_SP
> > +	mov $init_thread_union+THREAD_SIZE-SIZEOF_PTREGS, %_ASM_SP
> 
> This is initial_stack, isn't it?

It is. I'll change it.

Thanks
Miroslav