linux-kernel - Re: [patch V2 2/5] x86/kaiser: Simplify disabling of global pages

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Message-ID: <alpine.DEB.2.20.1711271248000.1799@nanos>
Date:   Mon, 27 Nov 2017 12:49:04 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...hat.com>, daniel.gruss@...k.tugraz.at,
        hughd@...gle.com, keescook@...gle.com, linux-mm@...ck.org,
        michael.schwarz@...k.tugraz.at, moritz.lipp@...k.tugraz.at,
        richard.fellner@...dent.tugraz.at
Subject: Re: [patch V2 2/5] x86/kaiser: Simplify disabling of global pages

On Mon, 27 Nov 2017, Thomas Gleixner wrote:
>  	/*
> @@ -179,11 +186,11 @@ static void __init probe_page_size_mask(
>  		cr4_set_bits_and_update_boot(X86_CR4_PSE);
>  
>  	/* Enable PGE if available */
> +	__supported_pte_mask |= _PAGE_GLOBAL;

Bah. Late night reject fixup wreckage. That wants to be

	__supported_pte_mask &= ~_PAGE_GLOBAL;

Thanks,

	tglx