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Date: Thu, 30 Jan 2020 09:27:41 +0200
From: Mike Rapoport <rppt@linux.ibm.com>
Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page
 table helpers
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To: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Qian Cai <cai@lca.pw>, Anshuman Khandual <anshuman.khandual@arm.com>, Linux-MM <linux-mm@kvack.org>, Andrew Morton <akpm@linux-foundation.org>, Vlastimil Babka <vbabka@suse.cz>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Thomas Gleixner <tglx@linutronix.de>, Mike Rapoport <rppt@linux.vnet.ibm.com>, Jason Gunthorpe <jgg@ziepe.ca>, Dan Williams <dan.j.williams@intel.com>, Peter Zijlstra <peterz@infradead.org>, Michal Hocko <mhocko@kernel.org>, Mark Rutland <Mark.Rutland@arm.com>, Mark Brown <broonie@kernel.org>, Steven Price <Steven.Price@arm.com>, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Masahiro Yamada <yamada.masahiro@socionext.com>, Kees Cook <keescook@chromium.org>, Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>, Matthew Wilcox <willy@infradead.org>, Sri Krishna chowdary <schowdary@nvidia.com>, Dave Hansen <dave.hansen@intel.com>, Russell King - ARM Linux <linux@armlinux.org.uk>, Michael Ellerman <mpe@ellerman.id.au>, Paul Mackerras <paulus@samba.org>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, "David S. Miller" <davem@davemloft.net>, Vineet Gupta <vgupta@synopsys.com>, James Hogan <jhogan@kernel.org>, Paul Burton <paul.burton@mips.com>, Ralf Baechle <ralf@linux-mips.org>, "Kirill A . Shutemov" <kirill@shutemov.name>, Christophe Leroy <christophe.leroy@c-s.fr>, Ingo Molnar <mingo@kernel.org>, linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org

On Wed, Jan 29, 2020 at 11:20:44PM +0100, Gerald Schaefer wrote:
> On Mon, 27 Jan 2020 22:33:08 -0500
> 
> For example, who would have thought that pXd_bad() is supposed to
> report large entries as bad? It's not really documented anywhere,

A bit off-topic,

@Anshuman, maybe you could start a Documentation/ patch that describes at
least some of the pXd_whaterver()?
Or that would be too much to ask? ;-)

> so we just checked them for sanity like normal entries, which
> apparently worked fine so far, but for how long?

-- 
Sincerely yours,
Mike.