linux-kernel - Re: [PATCH 2/2] xen: Kconfig: nest Xen guest options

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Message-ID: <CAKf6xpuRZKF56yyOR-Q6oBSJUpRSr0P+XVJD7DvaS6GWnNcMTg@mail.gmail.com>
Date:   Thu, 15 Oct 2020 10:50:55 -0400
From:   Jason Andryuk <jandryuk@...il.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:     Andrew Cooper <andrew.cooper3@...rix.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        xen-devel <xen-devel@...ts.xenproject.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] xen: Kconfig: nest Xen guest options

On Thu, Oct 15, 2020 at 9:17 AM <boris.ostrovsky@...cle.com> wrote:
>
>
> On 10/15/20 9:10 AM, Andrew Cooper wrote:
> > On 15/10/2020 13:37, boris.ostrovsky@...cle.com wrote:
> >> On 10/14/20 1:53 PM, Jason Andryuk wrote:
> >>> +config XEN_512GB
> >>> +   bool "Limit Xen pv-domain memory to 512GB"
> >>> +   depends on XEN_PV && X86_64
> >> Why is X86_64 needed here?
> >> 512G support was implemented using a direct-mapped P2M, and is rather
> > beyond the virtual address capabilities of 32bit.
> >
>
> Yes, my point was that XEN_PV already depends on X86_64.

Oh, thanks for catching this.  I re-introduced it by accident when
rebasing the patches.

Regards,
Jason