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Date:   Thu, 24 Oct 2019 11:51:24 +0300
From:   Mike Rapoport <rppt@kernel.org>
To:     Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc:     linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
        Anton Ivanov <anton.ivanov@cambridgegreys.com>,
        Arnd Bergmann <arnd@arndb.de>,
        "David S. Miller" <davem@davemloft.net>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Greentime Hu <green.hu@gmail.com>,
        Greg Ungerer <gerg@linux-m68k.org>,
        Helge Deller <deller@gmx.de>,
        "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
        Jeff Dike <jdike@addtoit.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Mark Salter <msalter@redhat.com>,
        Matt Turner <mattst88@gmail.com>,
        Michal Simek <monstr@monstr.eu>,
        Richard Weinberger <richard@nod.at>,
        Russell King <linux@armlinux.org.uk>,
        Sam Creasey <sammy@sammy.net>,
        Vincent Chen <deanbo422@gmail.com>,
        Vineet Gupta <Vineet.Gupta1@synopsys.com>,
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        linux-parisc@vger.kernel.org, linux-um@lists.infradead.org,
        sparclinux@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>,
        linux-parisc-owner@vger.kernel.org
Subject: Re: [PATCH 08/12] parisc: use pgtable-nopXd instead of 4level-fixup
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On Wed, Oct 23, 2019 at 12:20:29PM +0200, Rolf Eike Beer wrote:
> >diff --git a/arch/parisc/include/asm/page.h
> >b/arch/parisc/include/asm/page.h
> >index 93caf17..1d339ee 100644
> >--- a/arch/parisc/include/asm/page.h
> >+++ b/arch/parisc/include/asm/page.h
> >@@ -42,48 +42,54 @@ typedef struct { unsigned long pte; } pte_t; /*
> >either 32 or 64bit */
> >
> > /* NOTE: even on 64 bits, these entries are __u32 because we allocate
> >  * the pmd and pgd in ZONE_DMA (i.e. under 4GB) */
> >-typedef struct { __u32 pmd; } pmd_t;
> > typedef struct { __u32 pgd; } pgd_t;
> > typedef struct { unsigned long pgprot; } pgprot_t;
> >
> >-#define pte_val(x)	((x).pte)
> >-/* These do not work lvalues, so make sure we don't use them as such. */
> >+#if CONFIG_PGTABLE_LEVELS == 3
> >+typedef struct { __u32 pmd; } pmd_t;
> >+#define __pmd(x)	((pmd_t) { (x) } )
> >+/* pXd_val() do not work lvalues, so make sure we don't use them as such.
> >*/
> 
> For me it sounds like there is something missing, maybe an "as" before
> lvalues?

Right, "as lvalues" makes sense.

> And it was "These", so plural, and now it is singular, so do -> does?

There's also pgd_val() a few lines below, it's just not visible in the
patch.
 
> Eike

-- 
Sincerely yours,
Mike.