linux-kernel - Re: [PATCH 2/5] x86/boot/compressed/64: Find a place for 32-bit trampoline

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Message-ID: <20180227081437.epg5tmhg7gfzunwp@node.shutemov.name>
Date:   Tue, 27 Feb 2018 11:14:37 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Borislav Petkov <bp@...e.de>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>,
        Cyrill Gorcunov <gorcunov@...nvz.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Matthew Wilcox <willy@...radead.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] x86/boot/compressed/64: Find a place for 32-bit
 trampoline

On Mon, Feb 26, 2018 at 11:30:38PM +0100, Borislav Petkov wrote:
> On Mon, Feb 26, 2018 at 09:04:48PM +0300, Kirill A. Shutemov wrote:
> > +++ b/arch/x86/boot/compressed/pgtable.h
> > @@ -0,0 +1,11 @@
> > +#ifndef BOOT_COMPRESSED_PAGETABLE_H
> > +#define BOOT_COMPRESSED_PAGETABLE_H
> > +
> > +#define TRAMPOLINE_32BIT_SIZE		(2 * PAGE_SIZE)
> > +
> > +#ifndef __ASSEMBLER__
> 
> x86 uses __ASSEMBLY__ everywhere and I see
> 
> arch/x86/boot/compressed/Makefile:41:KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
> 
> so it should work here too.
> 
> Even though __ASSEMBLER__ is gcc predefined.

Okay, I'll fix this.

-- 
 Kirill A. Shutemov